Refer to CBSE Class 10 Science Metals and Non Metals MCQs provided below available for download in Pdf. The MCQ Questions for Class 10 Science with answers are aligned as per the latest syllabus and exam pattern suggested by CBSE, NCERT and KVS. Multiple Choice Questions for Chapter 3 Metals and Nonmetals are an important part of exams for Class 10 Science and if practiced properly can help you to improve your understanding and get higher marks. Refer to more Chapter-wise MCQs for CBSE Class 10 Science and also download more latest study material for all subjects
MCQ for Class 10 Science Chapter 3 Metals and Nonmetals
Class 10 Science students should refer to the following multiple-choice questions with answers for Chapter 3 Metals and Nonmetals in Class 10.
Chapter 3 Metals and Nonmetals MCQ Questions Class 10 Science with Answers
Question : Which is the least conductor of heat
a) Lead
b) Gold
c) Platinum
d) Silver
Answer : Lead
Question : Metal have ______no. of electrons in their outer most shell
a) 1 to 3
b) 1 to 8
c) 7 to 9
d) 10 to 12
Answer : 1 to 3
Question : Which oxide is neutral ?
a) H2O
b) NO2
c) MgO
d) None of these
Answer : H2O
Question : Al2.O3 2SiO2.2H2O is the chemical formula of
a) China Clay
b) Bauxite
c) Haemetite
d) Monazite
Answer : China Clay
Question : An alloy is
a) A mixture
b) A metalloid
c) A element
d) An isomer
Answer : A mixture
Question : Which non-metal is the best conductor of electricity
a) Graphite
b) Phosphorus
c) Phosphorus
d) Bromine
Answer : Graphite
Question : Which compound is used in photography
a) AgBr
b) AgO
c) AgCl
d) AgNO3
Answer : AgBr
Question : Carnallite is the mineral of
a) Mg
b) Na
c) Ca
d) All of these
Answer : Mg
Question : The magnesium is used in
a) All of these
b) Grignard reagent
c) Flash bulb
d) Electron alloy
Answer : All of these
Question : Cinnabar is an ore of
a) Mercury
b) Calcium
c) Copper
d) Lead
Answer : Mercury
Question : The constituent of haemoglobin is
a) Iron
b) Copper
c) Sodium
d) Magnesium
Answer : Iron
Question : The most abundant metal in the earth crust is
a) Al
b) O
c) Fe
d) Cu
Answer : Al
Question : Because of high electropositively, the atom of metals can easily form
a) Positive ions
b) Negatively ions
c) Neutral ions
d) Covalent bonds
Answer : Positive ions
Question : Volatile metals are purified by
a) Distillation
b) Oxidation
c) Liquation
d) Electrolytic refining
Answer : Distillation
Question : Amalgam is the homogeneous mixture of
a) Metal and mercury
b) Metal and non-metal
c) Metal and metal
d) All of these
Answer : Metal and mercury
Question : Which of the following is a ferrous alloy
a) Steel
b) Brass
c) Solder
d) Magnalium
Answer : Steel
Question : Which of the following statements is correct
a) All minerals are ores
b) All ores are minerals
c) All ores are minerals
d) None is correct
Answer : All minerals are ores
Question : Food cans are coated with tin and not zinc because
a) Zinc is more reactive than tin
b) Zinc is less reactive than tin
c) Zinc has a higher melting point than tin
d) Zinc is costlier than tin
Answer : Zinc is more reactive than tin
Question : Elements with atomic number greater than 92 are also called
a) transuranic elements
b) noble gas elements
c) alkaline earth metals
d) alkali metals
Answer : transuranic elements
Question : A purple-coloured solid halogen is
a) I
b) CI
c) Br
d) F
Answer : I
Question : Chajcogen refers to
a) ore-forming elements
b) chemically inert elements
c) salt-forming elements
d) alkali-forming elements
Answer : ore-forming elements
Question : Which of the following is a solid at STP?
a) iodine
b) chlorine
c) fluorine
d) bromine
Answer : iodine
Question : Element M is a metal and its chloride has the formula MCl2. The element most likely belongs to which group of the periodIC table'?[
a) 2
b) 17
c) 1
d) 15
Answer : 2
Question : Copper is extracted from low grade ore by
a) hydrometallurgy
b) pyrometallurgy
c) electrometallurgy
d) all of the above processes
Answer : hydrometallurgy
Question : Roasting process is applied to which of them following ores?
a) all of these
b) iron pyrites
c) galena
d) copper glance
Answer : all of these
Question : Purification of metals by liquation method is based on difference in
a) melting point
b) vapour density
c) density
d) solubility
Answer : melting point
Question : Arrange the following metal in the increasing order of their reactivity towards water: Zinc, Iron, Magnesium, Sodium
a) iron < zinc < magnesium < sodium
b) magnesium < iron < sodium < zinc
c) sodium < iron < magnesium < zinc
d) iron < Magnesium < sodium < zinc
Answer : iron < zinc < magnesium < sodium
Question : Which of the following is used for making magnets
a) alnico
b) magnalium
c) duralumin
d) bronze
Answer : alnico
Question : White phsphorus is stored in
a) water
b) ether
c) alcohol
d) kerosene oil
Answer : water
Question : Ordinary glass is a mixture of
a) sodium silicate, calcium silicate
b) sodium silicate, calcium silicate and silica
c) sodium silicate and silica
d) none of the above
Answer : sodium silicate, calcium silicate
Question : Annealing is done to
a) decrease brittleness
b) increase refractive inded
c) increase Transparancy
d) increase brittleness
Answer : decrease brittleness
Question : Polymer used in making floor tiles is
a) polyyinyl chloride
b) teflon
c) polypropylene
d) buta-1, 3-diene
Answer : polyyinyl chloride
Question : Which of the following is an example of condensaiton polymers?
a) nylon
b) neoprene
c) polyethene
d) teflon
Answer : nylon
Question : Insulation of electric wire is done by
a) vinyl chloride
b) isoprene
c) neoprene
d) buta-1, 3-diene
Answer : vinyl chloride
Question : Permanent magnets can be made from
a) Wrought iron
b) Cobalt steel
c) Ni steel
d) Stainless steel
Answer : Wrought iron
Question : The formula of Oleum is
a) H2S2O7
b) H2S2O6
c) H2SO4
d) None of these
Answer : H2S2O7
Question : The main constituents of cement are
a) calcium oxide, silicon dioxide, Aluminium oxide
b) calcium oxide, Iron oxide, Sulphur dioxide
c) magnesium oxide, Silicon dioxide, Aluminium oxide
d) none of these
Answer : calcium oxide, silicon dioxide, Aluminium oxide
Question : Hard glass is prepared by
a) fusing a mixture of potassium carbonate, calcium carbonate and silica
b) fusing a mixture of potassium carbonate and any oxide
c) none of the above
d) fusing a mixutre of sodium carbonate, calcium carbonate and silica
Answer : fusing a mixture of potassium carbonate, calcium carbonate and silica
Question : The soap can be hardened by
a) adding sodium carbonate or sodium silicate during its manufacture
b) adding sodium chloride
c) adding potassium hydroxide
d) adding animal fat and coconut oil
Answer : adding sodium carbonate or sodium silicate during its manufacture
Question : Soda Acid for extinguisher contains
a) sodium hydrogen carboante and sulphuric acid
b) sodium carbonate and nitric acid
c) sodium carboante and carbonic acid
d) sodium chloride and sulphuric acid
Answer : sodium hydrogen carboante and sulphuric acid
Question : The real bleaching agent present in bleaching powder is
a) chlorine
b) oxygen
c) CaO
d) none of the above
Answer : chlorine
Question : Cake does not taste bitter due to presence of
a) tartaric acid
b) citric acid
c) sodium carbonate
d) sugar
Answer : tartaric acid
Question : What is obtained on adding lime to H2O?
a) slaked lime
b) quicklime
c) limestone
d) lime
Answer : slaked lime
Question : The best electrical conductor is
a) silver
b) gold
c) copper
d) aluminium
Answer : silver
Question : "is malleable and ____" This statement best describes,
a) a metal
b) a metalloid
c) a nonmetal
d) a compound
Answer : a metal
Question : The most reactive metal of the following is
a) sodium
b) iron
c) zinc
d) magnesium
Answer : sodium
Question : The reaction, Zinc + Copper sulphate solution → Zinc sulphate solution + Copper, idicates that the metal which appear lower in the reactivity series is
a) Cu
b) Cu2+
c) Zn
d) Zn2+
Answer : Cu
Question : Where do the metals which can displace hydrogen from water at room temperature appear in the reactivity series ?
a) near the top
b) in the middle
c) at the bottom
d) next to hydrogen
Answer : near the top
Question : Iron is galvonized by coating it with
a) zinc
b) chromium
c) nickel
d) manganese
Answer : zinc
Question : Metalloids share the properties of
a) Both
b) Non-metals
c) Metals
d) None of these
Answer : Both
Question : Which one of the following is used for making pencil lead ?
a) Graphite
b) Sulphur
c) Diamond
d) None
Answer : Graphite
Question : The metal that melts even when kept on the palm is
a) Mercury
b) Gallium
c) Cobalt
d) Nickel
Answer : Mercury
Question : Which of the following metal cannot displaced hydrogen ?
a) All of these
b) Silver
c) Copper
d) Gold
Answer : All of these
Question : The essential condition required for rusting of iron is the pressure of
a) Moist oxygenated air
b) Nitrogen
c) Moisture
d) Oxygenated air
Answer : Moist oxygenated air
Question : Which of the following element is a metalloid?
a) Silicon
b) Nitrogen
c) Carbon
d) Calcium
Answer : Silicon
Question : Which of the following is the best conductor of electricity ?
a) Copper
b) Gold
c) Aluminum
d) Mercury
Answer : Copper
Question : The metal liquid at room temperature is
a) Mercury
b) Aluminum
c) Copper
d) Sodium
Answer : Mercury
Question : The element used as the index of the wealth of a country is
a) Gold
b) Platinum
c) Aluminum
d) Mercury
Answer : Gold
Question : The soldering wire is an alloy of
a) Copper and aluminium
b) Aluminium and lead
c) Lead and tin
d) Copper and tin
Answer : Copper and aluminium
Question : The stainless steel is an alloy of
a) Iron, nickel and chromium
b) Nickel and chromium
c) Iron and chromium
d) Iron and nickel
Answer : Iron, nickel and chromium
b) copper
d) aluminium
Answer : C
b) a nonmetal
d) a compound
b) iron
d) sodium
Answer : D
b) Cu
d) Cu2+
b) at the bottom
d) next to hydrogen
b) chromium
d) zinc
b) Non-metals
d) Both
b) Diamond
d) None
b) Gallium
d) Mercury
b) Silver
d) All of these
b) Nitrogen
d) Silicon
b) Aluminum
d) Mercury
b) Aluminum
d) Mercury
MCQ Questions for NCERT Class 10 Science Metals and Nonmetals
Question. An element A is soft and can be cut with a knife. This is very reactive to air and cannot be kept open in air. It reacts vigorously with water. Identity the element from the following
(a) Mg
(b) Na
(c) P
(d) Ca
Answer : B
Question. The atomic number of an element ‘X’ is 12. Which inert gas is nearest to X?
(a) He
(b) Ar
(c) Ne
(d) Kr
Answer : C
Question. Which property of metals is used for making bells and strings of musical instruments like Sitar and Violin?
(a) Sonorousness
(b) Malleability
(c) Ductility
(d) Conductivity
Answer : A
Question. Which of the following are not ionic compounds?
(i) KCl
(ii) HCl
(iii) CCl4
(iv) NaCl
(a) (i) and (ii)
(b) (ii) and (iii)
(c) (iii) and (iv)
(d) (i) and (iii)
Answer : B
Question. Which of the following pairs will give dis-placement reactions?
(a) FeSO4 solution and Copper metal
(b) AgNO3 solution and Copper metal
(c) CuSO4 solution and Silver metal
(d) NaCl solution and Copper metal
Answer : B
Question. Non-metals form covalent chlorides because
(a) they can give electrons to chlorine
(b) they can share electrons with chlorine
(c) they can give electrons to chlorine atoms to form chloride ions
(d) they cannot share electrons with chlorine atoms
Answer : B
Question. Which of the following metals exist in their native state in nature ?
(i) Cu
(ii) Au
(iii) Zn
(iv) Ag
(a) (i) and (ii)
(b) (ii) and (iii)
(c) (ii) and (iv)
(d) (iii) and (iv)
Answer : C
Question. The electronic configuration of three elements X, Y and Z are as follows:
X = 2, 4, Y = 2, 7, Z = 2,1 Which two elements will combine to form an ionic compound and write the correct formula,
(a) X2Y
(b) YZ
(c) XZ3(d) Y2Z
Answer : B
Question. Example of an amphoteric oxide is:
(a) Na2O
(b) K2O
(C) Al2O3
(d) MgO
Answer : C
Question. Which one among the following is an acidic oxide?
(a) Na2O
(b) CO
(c) CO2
(d) Al2O3
Answer : C
Question. Which one of the following metals do not react with cold as well as hot water?
(a) Na
(b) Ca
(c) Mg
(d) Fe
Answer : D
Question. Al2O3 + 2NaOH → …… + H2O
(a) Al(OH)3
(b) Na2O
(c) NaAlO2
(d) AlNaO2
Answer : C
Question. Oxides of moderately reactive metals like Zinc, Iron, Nickel, Tin, Copper etc. are reduced by using
(a) Aluminium as reducing agent
(b) Sodium as reducing agent
(c) Carbon as reducing agent
(d) Calcium as reducing agent
Answer : C
Question. Which of the following oxide(s) of iron would be obtained on prolonged reaction of iron with steam?
(a) FeO
(b) Fe2O3
(c) Fe3O4
(d) Fe2O3 and Fe2O4
Answer : C
Question. Galvanisation is a method of protecting iron from rudftng by coating with a thin layer of
(a) Galium
(b) Aluminium
(c) Zinc
(d) Silver
Answer : C
Question. Aluminium is used for making cooking uten¬sils. Which of the following properties of alu¬minium are responsible for the same?
(i) Good thermal conductivity
(ii) Good electrical conductivity
(iii) Ductility
(iv) High melting point
(a) (i) and (ii)
(b) (i) and (iii)
(c) (ii) and (iii)
(d) (i) and (iv)
Answer : D
Question. An element X is soft and can be cut with a knife. This is very reactive to air and cannot be kept open in air. It reacts vigorously with water. Identify the element from the following
(a) Mg
(b) Na
(c) P
(d) Ca
Answer : B
Question. Which of the following is the correct arrange-ment of the given metals in ascending order of their reactivity?
Zinc, Iron, Magnesium, Sodium
(a) Zinc > Iron > Magnesium > Sodium
(b) Sodium > Magnesium > Iron > Zinc
(c) Sodium > Zinc > Magnesium > Iron
(d) Sodium > Magnesium > Zinc > Iron
Answer : D
Question. The highly reactive metals like Sodium, Potas-sium, Magnesium, etc. are extracted by the
(a) electrolysis of their molten chloride
(b) electrolysis of their molten oxides
(c) reduction by aluminium
(d) reduction by carbon
Answer : A
Question. The lightest liquid metal is
(a) Hg
(b) Ga
(c) Cs
(d) Fr
Answer : C
Question. The most abundant metal in the earth’s crust is
(a) Iron
(b) Aluminium
(c) Calcium
(d) Sodium
Answer : B
Question. The most abundant element in the universe is
(a) Hydrogen
(b) Helium
(c) Carbon
(d) Oxygen
Answer : A
Question. Which of the following metals are obtained by electrolysis of their chlorides in molten state ?
(i) Na
(ii) Ca
(iii) Fe
(iv) Cu
(a) (i) and (iv)
(b) (iii) and (iv)
(c) (i) and (iii)
(d) (i) and (ii)
Answer : D
Question. In extraction of copper, the flux used is
(a) CaO
(b) SiO2
(c) FeO
(d) FeSiO3
Answer : B
Question. An example of a metal which is a liquid at room temperature
a) Zinc
b) Copper
c) Mercury
d) Bromine
Answer : C
Question. Gold is used in making ornaments because it is:
a) Lusturous
b) Unreactive
c) Malleable
d) All of the above
Answer : D
Question3. You are given two statements a and b, select the correct inference from this:
a) Metals conduct heat.
b) Diamond is the best conductor of heat.
i. Hence diamond is a metal
ii. Statement a is correct
iii. Statements a and b is correct
iv. None of the above
Answer : B
Question. A list of metals arranged in the order of their decreasing activities is known as:
a) Periodic table
b) Reactivity series
c) Newland’s law of octaves
d) All of these
Answer : B
Question. Sodium is kept immersed in kerosene oil because:
a) It reacts with moisture in the air
b) Immersing in kerosene cuts off the supply of air
c) The reaction of sodium with air is very violent.
d) All of the above.
Answer : D
Question. Samples of four metals A, B, C and D were taken and added to the following solution one by one. The results obtained have been tabulated as follows
a) Which is the least reactive metal?
i. A ii. B iii. C iv. D
Question. In the above table arrange the metals A, B, C and D in increasing order of reactivity:
a) D < A < C < B
b) D < C < B
c) D < C < A < B
d) C < D < A < B
Answer : B
Question. What are the ions present in Na2O?
a) Na+, O
b) Na2+, O2-
c) Na2+, O
d) Na+, O2-
Answer : D
Question. Among the following select the metal found free in nature:
a) Au
b) Cu
c) Na
d) Mg
Answer : A
Question. Ores mined from the earth are usually comtaminated with large amounts of impurities such as soil, sand, etc called_____________.
a) Gravel
b) Gangue
c) Sand
d) Granite
Answer : B
Question. Which of the following can undergo a chemical reaction ?
(a) MgSO4 + Fe
(b) ZnSO4 + Fe
(c) MgSO4 + Pb
(d) CuSO4 + Fe
Answer : D
Very Short Answer type Questions :
Question. Which metal does not react with water at all?
Answer: Copper because it is less reactive than hydrogen.
Question. Arrange the following metals in the decreasing order of reactivity:
Na, K, Cu, Ag
Answer: K > Na > Cu > Ag
Question. Metals generally occur in solid state. Name and write symbol of a metal that exists in liquid state at room temperature.
Answer: Mercury(Hg) exists in liquid state at room temperature.
Question. Name two metals that are soft and can be cut with knife.
Answer: Na (Sodium) and K (Potassium)
Question. Which of the following two metals will melt at body temperature (37 °C)? Gallium, Magnesium, Caesium, Aluminium
Answer: Gallium and Caesium
Question. How many valence electrons do metals have?
Answer: They have 1 to 3 valence electrons.
Question. Why do we use copper and aluminium wire for transmission of electric current?
Answer: It is because copper and A1 are good conductor of electricity and ductile, i.e. drawn into wires easily.
Question. Name one metal and one non-metal in liquid state at room temperature.
Answer: Mercury is a liquid metal and bromine is liquid non-metal.
Question. Name the ion made by non-metals: Cations/anion.
Answer: Anions (negative ions) because non-metals can gain electrons easily.
Question. What are metal?
Answer: Those elements which can lose electrons easily and form positive ions. They are mostly solids, possess high density.
Question. Why does calcium float in water?
Answer: It is because hydrogen gas is formed which sticks to surface of calcium, therefore it floats.
Question. Name any one metal which reacts neither with cold water nor with hot water, but reacts with heated steam to produce hydrogen gas.
Answer: Iron; 3Fe(s) + 4H2O(g) → Fe3O4(s) + 4H2(g)
Question. A non-metal X exists in two different forms Y and Z. Y is the hardest natural substance, whereas Z is a good conductor of electricity. Identify X, Y and Z.
Answer: ‘X’ is carbon, ‘Y’ is diamond as it is the hardest natural substance and ‘Z’ is graphite as it is good conductor of electricity.
Question. From amongst the metals sodium, calcium, aluminium, copper and magnesium, name the metal
(a) which reacts with water only on boiling, and
(b) another which does not react even with steam.
Answer: (a) Magnesium reacts with water only on boiling.
(b) Copper does not react even with steam.
Question. What are non-metals?
Answer: Those elements which can gain electrons easily.
Short Answer type Questions :
Question. A non-metal which is a conductor of electricity.
Answer: Graphite
Question. Give examples of metals which can be cut with a knife.
Answer: Lithium, sodium, potassium
Question. Name two metals which are comparatively poor conductors of heat.
Answer: Le ad and mercury
Question. Name the metals that do not react with water
Answer: Lead, copper, silver and gold
Question. Name the metals which produce amphoteric oxides.
Answer: A luminium oxide, Zinc oxide
Question. Write the chemical reaction when iron reacts with dilute H2S04
Answer: Fe + H2S04 ---→ FeS04 +H2
Question. Name a metal and a non-metal which is a liquid at room temperature.
Answer: Metal - Mercury, Non-metal - Bromine
Question. Name the metals which react with cold water, hot water and steam.
Answer: Metals with cold water – sodium, potassium and calcium
Metals with hot water – magnesium
Steam – aluminium, iron and zinc
Question. Name the compound formed when copper is heated in air.
Answer: Copper (11) oxide
Question. Name two metals that will melt when kept on your palm.
Answer: Gallium, Caesium
Question. Why metals like sodium and potassium are immersed in kerosene oil?
Answer: Metals like sodium and potassium react so vigorously that they catch fire, if kept i8n the open. To protect them and to prevent accidental fires ,they are immersed in kerosene oil
Question. Write the chemical equation for the reaction between Aluminium oxide and acid.
Answer: Al2O3+6 HCl ---→ 2 AlCl3 +3H2O
Question. Name a strong oxidizing agent which produces water on reactivity with most metals.
Answer: Nitric acid (HN03)
Question. What kind of oxide is produced when metals and non-metals are dissolved in water?
Answer: Metals form basic oxide and amphoteric oxide, non-metals form acidic oxides and neutral oxides
Question. Why does calcium or magnesium float when they react with water?
Answer: Calcium or magnesium react less violently with water and the heat produced is not sufficient for the evolved hydrogen to catch fire
Question. What is the property of metals in their pure state having a shining surface called?
Answer: M etallic lustre
Question. Which metals does not react with at even high temperature.
Answer: Silver, gold
Question. Write the chemical equation for the reaction of potassium metal with water.
Answer: 2K +H2O ---→ 2KOH+H2+ heat
Question. Copper does not burn on heating, but it gets a coating of black coloured layer. Name the coating
Answer: Copper II oxide
Question. Write the chemical equation for the reaction of sodium metal with water.
Answer: 2Na+H2O ---→ 2NaOH+H2+ heat
Question. Name the property of metals that can be beaten into thin sheets.
Answer: Malleability
Question. Name the most malleable metals.
Answer: Gold, silver, platinum
Question. Write the chemical equation for magnesium and calcium reacting with water
Answer: Mg + 2H2O ---→Mg (OH) 2+ H2
Ca + 2H20 ---→Ca (OH) 2 + H2
Question. Aluminium oxide reacts with base to form sodium aluminate and water. Write chemical equation for this reaction.
Answer: Al2O3+2NaOH ---→2 NaAlO2 + H2O
Question. Why are metals said to be sonorous?
Answer: The property of metals producing a sound on striking a hard surface is called to be sonorous
Question. Name the metals whose surface get covered by thin layer of oxide on oxidation at ordinary temperature
Answer: Magnesium, aluminium, zinc, lead
Question. A metal does not burn on heating but its filings burn vigorously when sprinkled in the flame of the burner
Answer: iron
Question. Name the only metal which produces H2 on reacting with nitric acid?
Answer: Manganese, magnesium
Question. Complete the following:
Metal A + salt solution of B = __________ + __________
Answer: Salt solution of A + Metal B
Question. Name the property of metals that can be drawn into thin wires.
Answer: Ductility
Question : An example of a metal which is a liquid at room temperature
b) Cu
c) Na
d) Mg
Question: Which of the following properties is not associated with metals ?
a) Allotropy
b) Conductivity
c) Ductility
d) Malleability
Answer : A
Question: Which of the following element is a metal ?
a) Aluminium
b) Boron
C) Carbon
d) Silicon
Answer : A
Question: Which of the following elements is not a metal ?
a) Calcium
b) Copper
c) Potassium
d) Sulphur
Answer : D
Question: Iron is a/an -
a) Alloy
b) Metal
c) Metalloid
d) Non-metal
Answer : B
Question: Which of the following non-metal is a good conductor of electricity ?
a) Diamond
b) Graphite
c) Phosphorus
d) Sulphur
Answer : B
Question: One of the constituents of amalgam is
a) Aluminium
b) Copper
c) Iron
d) Mercury
Answer : D
Question: Which of the following metal reacts with water causing fire ?
a) Aluminium
b) Calcium
c) Sodium
d) Zinc
Answer : C
Question: Which of the following metal is used in storage battery ?
a) Iron
b) Lead
c) Tin
d) Zinc
Answer : B
Question: The metal which exists as a liquid is
a) Aluminium
b) Sodium
c) Mercury
d) Potassium
Answer : C
Question: Which of the following non-metal exists in the liquid form ?
a) Chlorine
b) Bromine
c) Iodine
d) Fluorine
Answer : B
Question: Which of the following oxides is neither acidic nor basic?
a) CO2
b) N2O
c) SO2
d) SO3
Answer : B
Question: Which of the following displacement reaction is not possible?
a) Zn + CuSO4 → ZnSO4 + Cu
b) 2Ag + CuSO4 → Ag2SO4 + Cu
c) Mg + CuSO4 → MgSO4 + Cu
d) 2Na + CuSO4 → Na2SO4 + Cu
Answer : B
Question: Which of the following oxides may said to be neutral oxide ?
a) CO
b) CO2
c) SO2
d) SO3
Answer : A
Question: Which of the following metal reacts with water/steam to produce oxide instead of hydroxide ?
a) Sodium
b) Potassium
c) Calcium
d) Magnesium
Answer : D
Question: Which of the following metal does not react with dilute hydrochloric acid producing hydrogen gas ?
a) Zinc
b) Tin
c) Lead
d) Copper
Answer : D
Question: Which of the following elements does not react with cold acid ?
a) Na
b) Mg
c) C
d) Zn
Answer : C
Question: The white phosphorus is stored
a) in air
b) in water
c) in kerosene
d) in CS2
Answer : B
Question: Which one of the following properties is not generally exhibited by ionic compounds ?
a) solubility in water
b) electrical conductivity in solid state
c) high melting and boiling points
d) electrical conductivity in molten state
Answer : B
Question: Reaction between X and Y, forms compound Z, X loses electron and Y gains electron. Which of the following properties is not show by Z ?
a) has high melting point
b) has low boiling point
c) conducts electricity in molten state
d) occurs as solid
Answer : D
Question: The electronic configurations of three elements X, Y and Z are X – 2, 8; Y – 2, 8, 7 Z – 2, 8, 2. Which of the following is correct ?
a) X is a metal
b) Y is a metal
c) Z is a non-metal
d) Y is a non-metals and Z is a metal
Answer : D
Question: Froth floatation process is used for the concentration of
a) Oxide ores
b) Sulphide ores
c) Chloride Ores
d) Amalgam
Answer : B
Question: The substance added in water in the froth floatation process is
a) Olive oil
b) Pine oil
c) Coconut oil
d) None of the above
Answer : B
Question: Iron ore is concentrated by
a) Froth floatation
b) Electrolysis
c) Roasting
d) Magnetic separation
Answer : D
Question: Bauxite ore is concentrated by
a) Froth floatation
b) Electromagnetic separation
c) Chemical treatment
d) Hydraulic separation
Answer : C
Question: Froth-floatation method is successful in separating impurities from ores because
a) The pure ore is denser than water containing additives like pine oil, cresylic acid etc
b) The pure ore is soluble in water containing additives like pine oil, cresylic acid etc
c) The impurities are soluble in water containing additives like pine oil, cresylic acid etc
d) The pure ore is not as easily wetted by water as by pine oil, cresylic acid etc
Answer : D
Question: Extraction of zinc from zinc blende is achieved by
a) Electrolytic reduction
b) Roasting followed by reduction with carbon
c) Roasting followed by reduction with another metal
d) Roasting followed by self-reduction
Answer : B
Question: Heating of pyrites in air for oxidation of sulphur is called
a) Roasting
b) Calcination
c) Smelting
d) Slagging
Answer : A
Question: A substance which reacts with gangue to form fusible material is called
a) Flux
b) Catalyst
c) Ore
d) Slag
Answer : D
Question: When lime stone is heated strongly, it gives off CO2. In metallurgy this process is known as
a) Calcination
b) Roasting
c) Smelting
d) Ore dressing
Answer : C
Question: The substance which is mixed with the ore for removal of impurities is termed as -
a) Slag
b) Gangue
c) Flux
d) Catalyst
Answer : A
Question: Ores mined from the earth are usually comtaminated with large amounts of impurities such as soil, sand, etc called_____________.
a) Gangue
b) Gravel
c) Sand
d) Granite
Answer : A
Question: Among the following select the metal found free in nature:
a) Au
b) Cu
c) Na
d) Mg
Answer : A
Question: What are the ions present in Na2O?
a) Na+, O2-
b) Na2+, O2-
c) Na2+, O-
d) Na+, O
Answer : A
Question: Sodium is kept immersed in kerosene oil because:
a) All of the options
b) It reacts with moisture in the air
c) Immersing in kerosene cuts off the supply of air
d) The reaction of sodium with air is very violent.
Answer : A
Question: A list of metals arranged in the order of their decreasing activities is known as:
a) Reactivity series
b) Periodic table
c) Newlands law of octaves
d) All of these
Answer : A
Question: You are given two statements a and b, select the correct inference from this:
a) Metals conduct heat.
b) Diamond is the best conductor of heat.
a) Statement a is correct
b) Hence diamond is a metal
c) Statements a and b is correct
d) None of the options
Answer : A
Question: Gold is used in making ornaments because it is:
a) All of the options
b) Lusturous
c) Unreactive
d) Malleable
Answer : A
Question: An example of a metal which is a liquid at room temperature
a) Mercury
b) Zinc
c) Copper
d) Bromine
Answer : A
Short Answer type Questions :
Question. Which metals do not corrode easily?
Answer: Gold and platinum
Question. The impurities present in the ore is called ?
Answer: Gangue
Question. Name the metals in the middle of the activity series
Answer: Zinc, iron and lead
Question. How are metals in the low activity series extracted?
Answer: By roasting and refining
Question. Write the chemical equation for the extraction of metals in the low reactivity series
Answer: 2HgS + 3O2 ---→ 2HgO + 2S02
2HgO ---→ 2Hg +O2
Question. In the electrolytic refining of a metal M, what would you take as the anode, the cathode and the electrolyte ?
Answer: Anode - impure metal
Cathode – pure metal
Electrolyte – salt solution
Question. What is an alloy?
Answer: An alloy is a homogenous mixture of metals or metal with a non-metal
Question. Define roasting.
Answer: The process of converting sulphide ores into oxide by heating strongly in the presence of excess air
Question. List the condition necessary for corrosion?
Answer: Air and water
Question. Name the process of obtaining metals from their compounds.
Answer: Reduction
Question. An alloy is a mixture of ?
Answer: metals and non-metals
Question. What is anode mud?
Answer: The insoluble impurities settle down at the bottom of the anode during electrolyte refining of metals is called anode mud
Question. Name the metals obtained in the free state
Answer: Gold, silver, platinum, and copper
Question. What will be the action of SO2 gas on dry litmus paper and moist litmus paper
Answer: On dry litmus paper, it shows no change.
On moist litmus paper, it changes blue to red because S02 is acidic in nature and moist.
Litmus paper contain water and so splitting of ions take place and acidic nature is shown
Question. Carbon cannot reduce the oxides of sodium, magnesium, calcium, aluminium etc., to the respective metals. Why?
Answer: These metals have more affinity for oxygen for carbon
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MCQs for Science CBSE Class 10 Chapter 3 Metals and Nonmetals
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