JEE Chemistry S Block Elements MCQs Set B

Refer to JEE Chemistry S Block Elements MCQs Set B provided below available for download in Pdf. The MCQ Questions for Full Syllabus Chemistry with answers are aligned as per the latest syllabus and exam pattern suggested by JEE (Main), NCERT and KVS. Multiple Choice Questions for S Block Elements are an important part of exams for Full Syllabus Chemistry and if practiced properly can help you to improve your understanding and get higher marks. Refer to more Chapter-wise MCQs for JEE (Main) Full Syllabus Chemistry and also download more latest study material for all subjects

MCQ for Full Syllabus Chemistry S Block Elements

Full Syllabus Chemistry students should refer to the following multiple-choice questions with answers for S Block Elements in Full Syllabus.

S Block Elements MCQ Questions Full Syllabus Chemistry with Answers

 

 

Question: Following are colours shown by some alkaline earth metals in flame test. Which of the following are not correctly matched?

  • a) (i) and (iii)
  • b) (ii) only
  • c) (i) only
  • d) (ii) and (iii)

Answer: (i) and (iii)

 

Question: Which one of the following properties of alkali metals increases in magnitude as the atomic number rises ?

  • a) Ionic radius
  • b) Electronegativity
  • c) Melting point
  • d) First ionization energy

Answer: Ionic radius

 

Question: Out of the following elements which one do you expect to be most reactive, chemically ?

  • a) Ba
  • b) Ca
  • c) Mg
  • d) Sr

Answer: Ba

 

Question:

  • a) MgO
  • b) Mg(OH)2
  • c) MgH2
  • d) None of these

Answer: MgO

 

Question: The metals A and B form oxide but B also forms nitride when both burn in air. The A and B are

  • a) K, Mg
  • b) Mg, Ca
  • c) Cs, K
  • d) Li, Na

Answer: K, Mg

 

Question: Which of the following is the best method for preparation of BeF2?

  • a) Thermal decomposition of (NH4)2BeF4
  • b) Reaction of Be with F2
  • c) Reaction of Be with HF
  • d) All of the above are equally effective

Answer: Thermal decomposition of (NH4)2BeF4

 

Question:  Arrange the following compounds in order of increasing solubility

(i) MgF2 (ii) CaF2, (iii) BaF2

  • a) (ii) < (i) < (iii)
  • b) (iii) < (ii) < (i)
  • c) (i) < (ii) < (iii)
  • d) (ii) < (iii) < (ii)

Answer: (ii) < (i) < (iii)

 

Question: Alkaline earth metals are

  • a) reducing agent
  • b) dehydrating agent
  • c) amphoteric
  • d) oxidizing agent

Answer: reducing agent

 

Question: The oxidation state shown by alkaline earth metals is

  • a) +2
  • b) –2
  • c) +1, +2
  • d) –1, –2

Answer: +2

 

Question: Which one of the following is the most soluble in water?

  • a) Ba(OH)2
  • b) Sr(OH)2
  • c) Mg(OH)2
  • d) Ca(OH)2

Answer:  Ba(OH)2

 

Question: Which of the following alkaline earth metal hydroxides is amphoteric in character

  • a) Be(OH)2
  • b) Sr(OH)2
  • c) Ca(OH)2
  • d) Ba(OH)2

Answer: Be(OH)2

 

Question: Of the metals Be, Mg, Ca and Sr of group 2 A. In the periodic table the least ionic chloride would be formed by

  • a) Be
  • b) Ca
  • c) Mg
  • d) Sr

Answer: Be

 

More Questions...............................

 

Question: The order of solubility of sulphates of alkaline earth metals in water is

  • a) Be > Mg > Ca > Sr > Ba
  • b) Mg > Be >> Ba > Ca > Sr
  • c) Be > Ca > Mg > Ba >> Sr
  • d) Mg > Ca > Ba >> Be > Sr

Answer: Be > Mg > Ca > Sr > Ba

 

Question: The solubilities of carbonates decrease down the magnesium group due to a decrease in

  • a) hydration energies of cations
  • b) inter-ionic attraction
  • c) entropy of solution formation
  • d) lattice energies of solids

Answer: hydration energies of cations

 

Question: The correct order of increasing thermal stability of K2CO3, MgCO3, CaCO3 and BeCO3 is

  • a)

  • b)

  • c)

  • d) None of these

Answer:

 

Question: In which of the following the hydration energy is higher than the lattice energy?

  • a) MgSO4
  • b) SrSO4
  • c) RaSO4
  • d) BaSO4

Answer: MgSO4

 

Question: Which of the following alkaline earth metal sulphates has hydration enthalpy higher than the lattice enthalpy?

  • a) BeSO4
  • b) SrSO4
  • c) CaSO4
  • d) BaSO4

Answer: BeSO4

 

Question: Beryllium shows diagonal relationship with aluminium. Which of the following similarity is incorrect ?

  • a) Be(OH)2 like Al(OH)3 is basic.
  • b) Be forms beryllates and Al forms aluminates
  • c) Be like Al is rendered passive by HNO3
  • d) None of these

Answer:  Be(OH)2 like Al(OH)3 is basic.

 

Question: The substance not likely to contain CaCO3 is

  • a) gypsum
  • b) sea shells
  • c) a marble statue
  • d) dolomite

Answer: gypsum

 

Question: Plaster of Paris is

  • a)

  • b) CaSO4.2H2O
  • c) CaSO4.H2O
  • d) None of these

Answer:

 

Question: Gypsum on heating at 120 – 130°C gives

  • a) hemihydrate
  • b) dihydrate
  • c) anhydrous salt
  • d) monohydrate

Answer: hemihydrate

 

Question: Plaster of Paris on making paste with little water sets to hard mass due to formation of

  • a) CaSO4.2H2O
  • b) CaSO4.1/2H2O
  • c) CaSO4
  • d) None of these

Answer: CaSO4.2H2O

 

Question: Dead burn plaster is

  • a) CaSO4
  • b) MgSO4. 7H2O
  • c) CaSO4.2H2O
  • d) None of these

Answer: CaSO4

 

Question: The formula for calcium chlorite is

  • a) Ca(ClO2)2
  • b) Ca(ClO3)2
  • c) Ca(ClO4)2
  • d) CaClO2

Answer:  Ca(ClO2)2

 

Question: The chemical which is used for plastering the broken bones is

  • a) (CaSO4)2H2O
  • b) FeSO4. 7H2O
  • c) MgSO4.7H2O
  • d) None of these

Answer: (CaSO4)2H2O

 

Question: Bone ash contains

  • a) Ca3 (PO4)2
  • b) CaO
  • c) CaSO4
  • d) None of these

Answer: Ca3 (PO4)2

 

Question: Mortar is a mixture of

  • a) slaked lime, sand and water
  • b) slaked lime and water
  • c) CaCO3, sand and water
  • d) CaCO3 and CaO

Answer: slaked lime, sand and water

 

Question: Which gas is released when CaCO3 reacts with dilute HCl?

  • a) CO2
  • b) Cl2
  • c) H2
  • d) O2

Answer: CO2

 

Question: Setting of cement is an

  • a) exothermic reaction
  • b) endothermic reaction
  • c) neither endothermic nor exothermic
  • d) example of neutralisation reaction

Answer: exothermic reaction

 

Question:  For a good quality cement what should be the ratio of following :

I. Silica to alumina
II. CaO to the total of oxides of SiO2, Al2O3 and Fe2O3

  • a)

    I = 2.5 to 4
    II = Closer to 2

  • b)

    I = 2.5
    II = Closer to 2

  • c)

    I = Nearly 4
    II = Less than 2

  • d)

    I = 2.5 to 4
    II = Greater than 2

Answer:

I = 2.5 to 4
II = Closer to 2

 

Question: Calcitonin and parathyroid hormone regulate concentration of which of the following element in plasma?

  • a) Calcium
  • b) Sodium
  • c) Magnesium
  • d) Potassium

Answer: Calcium

 

Question: Which of the following metal is found in green colouring pigment chlorophyll of plants?

  • a) Mg
  • b) Al
  • c) Fe
  • d) Na

Answer: Mg

 

Question: Select the correct statements

(i) Cs+ is more highly hydrated that the other alkali metal ions
(ii) Among the alkali metals Li, Na, K and Rb, lithium has the highest melting point
(iii) Among the alkali metals only lithium forms a stable nitride by direct combination with nitrogen

  • a) (ii) and (iii)
  • b) (i) and (ii)
  • c) (i), (ii) and (iii)
  • d) (i) and (iii)

Answer: (ii) and (iii)

 

Question: Which of the following sequence of T and F is correct for alkali metals ? Here T represents True and F represents False statement.

(i) Alkali metal hydrides are ionic solids with high melting point.
(ii) All alkali halides are ionic in nature.
(iii) Li is the least powerful reducing agent and Na is the most powerful reducing agent.

  • a) TFF
  • b) TFT
  • c) TTT
  • d) FTF

Answer: TFF

 

Question:  Which of the following statement(s) is/are correct regarding

Li2CO3 and Na2CO3 ?
(i) Sodium salt evolve CO2 at higher temperature.
(ii) Polarization of Na+ is lesser than that of Li+.

  • a) Statement (ii) is correct explanation for statement (i)
  • b) Statement (i) is correct explanation for statement (ii)
  • c) Both statements (i) and (ii) are incorrect
  • d) Both statements (i) and (ii) are correct

Answer: Statement (ii) is correct explanation for statement (i)

 

Question:  Which of the following sequence of T and F is correct for given statements?

(i) The alkali metal hydroxides are the strongest of all bases.
(ii) All alkali metal halides have high negative enthalpies of formation.
(iii) The stability of the carbonates and hydrogen carbonates of alkali metals decrease with increase in electropositive character down the group.
(iv) Only LiHCO3 exist as solid.

  • a) TTFF
  • b) FTFT
  • c) TTTT
  • d) TFFT

Answer: TTFF

 

Question: Which of the following statement(s) is/are correct?

(i) The atomic and ionic radii of alkaline earth metals are smaller than those of the corresponding alkali metals in the same periods.
(ii) Second ionisation enthalpies of the alkaline earth metals are smaller than those of the corresponding alkali metals.
(iii) Compounds of alkaline earth metals are more extensively hydrated than those of alkali metals

  • a) (i), (ii) and (iii)
  • b) (ii) and (iii)
  • c) (i) and (ii)
  • d) (i) and (iii)

Answer: (i), (ii) and (iii)

 

Question: Which of the following statements are correct ?

(i) Copper - beryllium alloys are used in the preparation of high strength springs
(ii) Metallic beryllium is used for making window X-ray tubes.
(iii) Magnesium powder is used in incendiary bombs and singnals.
(iv) Barium is used in treatment of cancer.

  • a) (i), (ii) and (iii)
  • b) (i), (ii) and (iv)
  • c) (i) and (iii)
  • d) (i), (ii), (iii) and (iv)

Answer: (i), (ii) and (iii)

 

Question:  Which of the following is/are not characteristic property(ies) of alkaline earth metals ?

(i) All alkaline earth metal oxides are basic in nature and forms sparingly soluble hydroxides with water.
(ii) The hydrated chlorides, bromides and iodies of Ca, Sr and Ba on heating undergoes hydrolysis while corresponding hydrated halides of Be and Mg on heating undergo dehydration.
(iii) Nitrates of alkaline earth metals decompose on heating as below

  • a) (i) and (ii)
  • b) (ii) only
  • c) (i) only
  • d) (i) and (iii)

Answer: (i) and (ii)

 

Question: Which of the following statement(s) is/are correct regarding Al and Be ?

(i) Both of these react with alkali.
(ii) There is diagonal relationship among these elements

  • a) Both (i) and (ii)
  • b) Only (ii)
  • c) Only (i)
  • d) Neither (i) nor (ii)

Answer: Both (i) and (ii)

 

Question:

  • a) A – (q), B – (s), C – (r), D – (p), E – (t)
  • b) A – (s), B – (q), C – (r), D – (p), E – (t)
  • c) A – (t), B – (r), C – (s), D – (p), E – (q)
  • d) A – (q), B – (p), C – (r), D – (p), E – (t)

Answer: A – (q), B – (s), C – (r), D – (p), E – (t)

 

Question:

  • a) A – (p), B – (r), C – (q)
  • b) A – (q), B – (r), C – (p)
  • c) A – (r), B – (q), C – (p)
  • d) A – (q), B – (p), C – (r)

Answer: A – (p), B – (r), C – (q)

 

Question: Match the columns. Here Column-I shows the names of the metals used with lithium to make useful alloys and Column-II shows the uses of these alloys

  • a) A – (q), B – (p), C – (r)
  • b) A – (q), B – (r), C – (p)
  • c) A – (p), B – (r), C – (q)
  • d) None of these

Answer:  A – (q), B – (p), C – (r)

 

Question:

  • a) A – (q), B – (r), C – (s), D – (p)
  • b) A – (s), B – (q), C – (r), D – (p)
  • c) A – (p), B – (s), C – (r), D – (q)
  • d) A – (s), B – (r), C – (p), D – (q)

Answer: A – (q), B – (r), C – (s), D – (p)

 

Question:

  • a) A – (q), B – (p), C – (r), D – (s)
  • b) A – (q), B – (p), C – (s), D – (r)
  • c) A – (s), B – (r), C – (q), D – (p)
  • d) A – (p), B – (q), C – (r), D – (s)

Answer: A – (q), B – (p), C – (r), D – (s)

 

Question:

  • a) A – (s), B – (p), C – (r), D – (q)
  • b) A – (q), B – (r), C – (p), D – (s)
  • c) A – (r), B – (q), C – (s), D – (p)
  • d) A – (p), B – (s), C – (q), D – (r)

Answer: A – (s), B – (p), C – (r), D – (q)

 

Question:

Assertion: Lithium salts are mostly hydrated.
Reason : The hydration enthalpy of alkali metal ions decreases with increase in ionic sizes.

  • a) Assertion is correct, reason is correct; reason is a correct explanation for assertion
  • b) Assertion is correct, reason is correct; reason is not a correct explanation for assertion
  • c) Assertion is correct, reason is incorrect
  • d) Assertion is incorrect, reason is correct

Answer: Assertion is correct, reason is correct; reason is a correct explanation for assertion

 

Question:

  • a) Assertion is correct, reason is correct; reason is a correct explanation for assertion
  • b) Assertion is correct, reason is correct; reason is not a correct explanation for assertion
  • c) Assertion is correct, reason is incorrect
  • d) Assertion is incorrect, reason is correct

Answer: Assertion is correct, reason is correct; reason is a correct explanation for assertion

 

Question:

Assertion : Compounds of beryllium is largely covalent and get hydrolysed easily.
Reason : This is due to high value of ionisation potential and small size of Be.

  • a) Assertion is correct, reason is correct; reason is a correct explanation for assertion
  • b) Assertion is correct, reason is correct; reason is not a correct explanation for assertion
  • c) Assertion is correct, reason is incorrect
  • d) Assertion is incorrect, reason is correct

Answer: Assertion is correct, reason is correct; reason is a correct explanation for assertion

 

Question:

Assertion : Radium is most abundant s-block element.
Reason : s-block elements are non-radioactive in nature

  • a) Assertion is incorrect, reason is correct
  • b) Assertion is correct, reason is incorrect
  • c) Assertion is correct, reason is correct; reason is not a correct explanation for assertion
  • d) None of these

Answer: Assertion is incorrect, reason is correct

 

Question: The melting point of lithium (181°C) is just double the melting point of sodium (98°C) because

  • a) down the group the cohesive energy decreases
  • b) None of these
  • c) down the group, the ionization energy decreases
  • d) None of these

Answer: down the group the cohesive energy decreases

 

Question: Li has the maximum value of ionisation potential among alkali metals i.e. lithium has the minimum tendency to ionise to give LI+ ion. Thus, in aq. solution lithium is

  • a) strongest reducing agent
  • b) poorest reducing agent
  • c) strongest oxidising agent
  • d) poorest oxidising agent

Answer: strongest reducing agent

 

Question: Lithium is strongest reducing agent among alkali metals due to which of the following factor?

  • a) Hydration energy
  • b) Ionization energy
  • c) Electron affinity
  • d) Lattice energy

Answer: Hydration energy

 

Question: Which of the following statements is incorrect?

  • a) Dissolution of alkali metal hydroxide is endothermic
  • b) Aqueous solution of alkali metal hydroxides are strongly basic
  • c) Alkali metal hydroxides form ionic crystals
  • d) Alkali metal hydroxide are hygroscopic

Answer: Dissolution of alkali metal hydroxide is endothermic

 

Question: Which of the following on thermal decomposition yields a basic as well as acidic oxide ?

  • a) CaCO3
  • b) NaNO3
  • c) KClO3
  • d) NH4NO3

Answer: CaCO3

 

Question: Which one of the following on hydrolysis, gives the corresponding metallic hydroxide, H2O2 and O2?

  • a) NaO2
  • b) Li2O
  • c) Na2O2
  • d) Na2O

Answer: NaO2

 

Question: Which of the following oxides of potassium is not known ?

  • a) K2O4
  • b) K2O3
  • c) K2O
  • d) KO3

Answer: K2O4

 

Question: Suppose an element is kept in air chamber, than air content was evaluated after sometime , oxygen and nitrogen content was found to be low comparitively. The given element will be

  • a) Li
  • b) Na
  • c) Rb
  • d) K

Answer: Li

 

Question: Suppose metal react with the oxygen to form oxide, than aqueous solution of this oxide when added to a solution of HI, solution turn yellowish brown in colour. This compound is

  • a) Na2O2
  • b) Li2O
  • c) Na2O
  • d) None 0f these

Answer: Na2O2

 

Question: Which of the following salt of lithium is most soluble in organic solvent ?

  • a) LiI
  • b) LiCl
  • c) LiF
  • d) LiBr

Answer: LiI

 

Question: Arrange the following in increasing order of their melting point ?

(A) LiCl, (B) NaCl, (C) KCl

  • a) A < B < C
  • b) C < A < B
  • c) B < A < C
  • d) None of these

Answer: A < B < C

 

Question: The raw materials in Solvay Process are

  • a) NaCl , NH 3 and CaCO3.
  • b) NaOH, CaO and NH3
  • c) Na2CO3 ,CaCO3 and NH3
  • d) All of these

Answer: NaCl , NH 3 and CaCO3.

 

Question: Compared with the alkaline earth metals, the alkali metals exhibit

  • a) lower ionization energies
  • b) highest boiling points
  • c) smaller ionic radii
  • d) greater hardness

Answer:  lower ionization energies

 

Question: Property of the alkaline earth metals that increases with their atomic number is

  • a) solubility of their hydroxides in water
  • b) solubility of their sulphates in water
  • c) ionization energy
  • d) electronegativity

Answer: solubility of their hydroxides in water

 

Question: Which one of the following does not react with water even under red hot condition?

  • a) Be
  • b) K
  • c) Na
  • d) Ca

Answer: Be

 

Question: Magnesium burns in CO2 to form

  • a) MgO + C
  • b) MgO + CO
  • c) MgO
  • d) MgCO3

Answer: MgO + C

 

Question:

  • a) C < B < A < D
  • b) A < C < B < D
  • c) A < B < C < D
  • d) C < A < B < D

Answer: C < B < A < D

  

Question: Which of the following will precipitate first when aqueous solution containing sulphate ions are added?

  • a) Ba2+
  • b) Ca2+
  • c) Mg2+
  • d) Sr2+

Answer: Ba2+

 

Question: If the fluoride salts of group 2 metals are dissolved in water, than which of the following will show high solubility?

  • a) BaF2
  • b) CaF2
  • c) RbF2
  • d) BeF2

Answer: BaF2

 

Question: Aqueous solution of group 2 is precipitated by adding Na2CO3, then this precipitate is tested on flame, no light in visible region is observed , this element can be

  • a) Mg
  • b) Sr
  • c) Ba
  • d) Ca

Answer: Mg

 

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