JEE Chemistry Classification Of Elements and Periodicity In Properties MCQs Set A

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MCQ for Full Syllabus Chemistry Classification Of Elements and Periodicity In Properties

Full Syllabus Chemistry students should refer to the following multiple-choice questions with answers for Classification Of Elements and Periodicity In Properties in Full Syllabus.

Classification Of Elements and Periodicity In Properties MCQ Questions Full Syllabus Chemistry with Answers

 

 

Question: Modern periodic table is based on the atomic number of the elements. The experiment which proved the significance of the atomic number was

  • a) Mosley’s work on X-ray spectra
  • b) Mulliken’s oil drop experiment
  • c) Bragg’s work on X-ray diffraction
  • d) Discovery of X-rays by Rontgen

Answer: Mosley’s work on X-ray spectra

 

Question: The period number in the periodic table corresponds to the ...A... principal quantum number (n) of the elements. Here, A refers to

  • a) highest
  • b) None of these
  • c) lowest
  • d) middle

Answer: highest

 

Question: The symbol and IUPAC name for the element with atomic number 120, respectively are

  • a) Ubn and unbinilium
  • b) Ubn and unnibium
  • c) Ubn and unbiunium
  • d) Ubn and unnilium

Answer: Ubn and unbinilium

 

Question: Element with which of the following atomic number was named by American Society as Rutherfordium, while by Soviet Society it was named as Kurchatovium?

  • a) 104
  • b) 110
  • c) 108
  • d) 114

Answer: 104

 

Question: What is the IUPAC name of the element with atomic number 114 ?

  • a) Ununquadium
  • b) Unununnium
  • c) Unnilquadium
  • d) Unnilennium

Answer: Ununquadium

 

Question:

  • a) 5th
  • b) 7th
  • c) 2nd
  • d) 3rd

Answer: 5th

 

Question: The long form of periodic table consists of

  • a) seven periods and eighteen groups
  • b) seven periods and eight groups
  • c) eight periods and eighteen groups
  • d) eighteen periods and eight groups

Answer: seven periods and eighteen groups

 

Question: All the members in a group in long form of periodic table have the same

  • a) All of the above
  • b) chemical properties
  • c) number of valence electrons
  • d) valence

Answer: All of the above

 

Question: Elements of which group form anions most readily?

  • a) Halogens
  • b) Oxygen family
  • c) Nitrogen family
  • d) Alkali metals

Answer: Halogens

 

Question: Element having atomic no. of 56 belongs to which of the following block of periodic table?

  • a) s-block
  • b) d-block
  • c) p- block
  • d) f- block

Answer: s-block

 

Question: In the modern periodic table one of the following does not have appropriate position

  • a) inner transition elements
  • b) halogens
  • c) inert gases
  • d) transition elements

Answer: inner transition elements

 

Question: If the atomic number of an element is 33, it will be placed in the periodic table in the

  • a) Fifth group
  • b) First group
  • c) Third group
  • d) Seventh group

Answer: Fifth group

 

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

 

Question: An atom has electronic configuration 1s2 2s2 2p6 3s2 3p6 3d3 4s2, you will place it in which group?

  • a) Fifth
  • b) Second
  • c) Fifteenth
  • d) Third

Answer: Fifth

 

Question: Which of the following is not an actinoid ?

  • a) Terbium (Z = 65)
  • b) Curium (Z = 96)
  • c) Californium (Z = 98)
  • d) Uranium (Z = 92)

Answer: Terbium (Z = 65)

 

Question: The period number in the long form of the periodic table is equal to

  • a) maximum Principal quantum number of any element of the period.
  • b) atomic number of any element of the period.
  • c) magnetic quantum number of any element of the period
  • d) maximum Azimuthal quantum number of any element of the period.

Answer: maximum Principal quantum number of any element of the period.

 

Question: The electronic configuration of four elements are given below. Which elements does not belong to the same family as others?

  • a)

  • b)

  • c)

  • d)

Answer:

 

Question: The elements with atomic numbers 9, 17, 35, 53 and 85 belong to

  • a) halogens
  • b) alkali metals
  • c) alkaline earth metals
  • d) noble gases

Answer: halogens

 

Question: Which of the following pairs has both members from the same period of the periodic table

  • a) Na – Cl
  • b) Cl – Br
  • c) Ca – Cl
  • d) Na – Ca

Answer: Na – Cl

 

Question: The elements which are characterized by the outer electronic configuration ns1 to ns2 np6 are collectively called

  • a) Representative elements
  • b) Transition elements
  • c) Lanthanides
  • d) Inner transition elements

Answer: Representative elements

 

Question: f-block elements are called inner transition elements because

  • a) they exist in between transition elements
  • b) they have properties similar to those of transition elements
  • c) the last electron enters into the f-orbital of the penultimate shell
  • d) the last electron enters into any orbital of penultimate shell

Answer: they exist in between transition elements

 

Question: An element, which belongs to third period and group 16 in the periodic table has electronic configuration.

  • a)

  • b)

  • c) Both
  • d) None of these

Answer:

 

Question: Which of the following is non-metallic ?

  • a) B
  • b) Mg
  • c) Be
  • d) Al

Answer: B

 

Question: Which group of the periodic table contains coinage metal ?

  • a) IB
  • b) None of these
  • c) IIA
  • d) IA

Answer: IB

 

Question: The only non-metal which is liquid at ordinary temperature is

  • a) Br2
  • b) None of these
  • c) Hg
  • d) NH3

Answer: Br2

 

Question: Which is a metalloid?

  • a) Sb
  • b) Zn
  • c) Pb
  • d) Bi

Answer: Sb

 

Question: In the long form of the periodic table all the non-metals are placed in

  • a)

  • b)

  • c)

  • d) All of these

Answer:

 

Question: Arrange the following elements in the order of their increasing non-metallic character

Li, O, C, Be, F

  • a) Li < Be < C < O< F
  • b) F < O < Be < C < Li
  • c) F < O < C < Be < Li
  • d) F < O < C < Be < Li

Answer: Li < Be < C < O< F

 

Question: Which is the correct order of ionic sizes (At. No. : Ce = 58, Sn = 50, Yb = 70 and Lu = 71) ?

  • a) Sn > Ce > Yb > Lu
  • b) Sn > Yb > Ce > Lu
  • c) Ce > Sn > Yb > Lu
  • d) Lu > Yb > Sn > Ce

Answer: Sn > Ce > Yb > Lu

 

Question: The order of increasing sizes of atomic radii among the elements O, S, Se and As is

  • a) O < S < As < Se
  • b) As < S < O < Se
  • c) Se < S < As < O
  • d) O < S < Se < As

Answer: O < S < As < Se

 

Question: In the ions P3–, S2– and Cl, the increasing order of size is

  • a)

  • b)

  • c)

  • d) All of these

Answer:

 

Question: Which of the following is correct ?

  • a) Isoelectronic ions have same number of electrons
  • b) All are correct
  • c) Isoelectronic ions have same neutrons
  • d) Isoelectronic ions have same nuclear charge

Answer: Isoelectronic ions have same number of electrons

 

Question: On going down a main sub-group in the periodic table (example Li to Cs in IA or Be to Ra in IIA), the expected trend of changes in atomic radius is a

  • a) continuous increase
  • b) continuous decrease
  • c) periodic one, an increase followed by a decrease
  • d) decrease followed by increase

Answer: continuous increase

 

Question: Why the size of an anion is larger than the parent atom?

  • a) Both
  • b) Due to decrease in effective nuclear charge
  • c) Due to increased repulsion among the electrons
  • d) None of these

Answer: Both

 

Question: Which ionisation potential (IP) in the following equations involves the greatest amount of energy ?

  • a)

  • b)

  • c)

  • d)

Answer:

 

Question: Arrange S, P, As in order of increasing ionisation energy

  • a) As < S < P
  • b) S < P < As
  • c) P < S < As
  • d) As < P < S

Answer: As < S < P

 

Question: The statement that is not correct for periodic classification of elements is :

  • a) For transition elements, the 3d-orbitals are filled with electrons after 3p-orbitals and before 4s-orbitals
  • b) Non-metallic elements are less in number than metallic elements.
  • c) The properties of elements are periodic function of their atomic numbers
  • d) The first ionisation enthalpies of elements generally increase with increase in atomic number as we go along a period.

Answer: For transition elements, the 3d-orbitals are filled with electrons after 3p-orbitals and before 4s-orbitals

 

Question:

  • a)

  • b)

  • c) Both
  • d) None of these

Answer:

 

Question: Of the given electronic configurations for the elements, which electronic configuration indicates that there will be abnormally high difference in the second and third ionization energy for the element?

  • a) 1s2 2s2 2p6 3s2
  • b) 1s2 2s2 2p6 3s1
  • c) 1s2 2s2 2p6 3s2 3p2
  • d) None of these

Answer: 1s2 2s2 2p6 3s2

 

Question: Alkali metals are powerful reducing agents because

  • a) their ionisation potential is low
  • b) these are monovalent
  • c) their ionic radii are large
  • d) these are metals

Answer: their ionisation potential is low

 

Question: Which of the following metals requires the radiation of highest frequency to cause the emission of electrons ?

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

Answer: Mg

 

Question: Halogens and chalcogens family have highly ...P.. electron gain enthalpy. Here, P refers to

  • a) negative
  • b) positive
  • c) infinity
  • d) zero

Answer: negative

 

Question: Which of the following represents the correct order of increasing electron gain enthalpy with negative sign for the elements O, S, F and Cl ?

  • a) O < S < F < Cl
  • b) S < O < Cl < F
  • c) Cl < F < O < S
  • d) F < S < O < Cl

Answer: O < S < F < Cl

 

Question: The electron affinity for the inert gases is –

  • a) zero
  • b) negative
  • c) high
  • d) positive

Answer: zero

 

Question: The element with positive electron gain enthalpy is

  • a) neon
  • b) sodium
  • c) hydrogen
  • d) oxygen

Answer: neon

 

Question: Which of the following will have the least negative electron gain enthalpy?

  • a) P
  • b) Cl
  • c) S
  • d) F

Answer: P

 

Question: Which is the correct order of electronegativity ?

  • a) F > N < O > C
  • b) F > N > O < C
  • c) F > N > O > C
  • d) F < N < O =C

Answer: F > N < O > C

 

Question: The correct order of decreasing electronegativity values among the elements I-beryllium, II-oxygen, III-nitrogen and V-magnesium is

  • a) II > III > I > IV
  • b) I > II > III > IV
  • c) I > II > III > IV
  • d) I > II > IV > III

Answer: II > III > I > IV

 

Question: 

  • a) Neutral oxide
  • b) Basic oxide
  • c) Acidic oxide
  • d) Amphoteric oxide

Answer: Neutral oxide

 

Question: Diagonal relationship is shown by

  • a) None of the above
  • b) Most of the elements of second period
  • c) All 3d series elements
  • d) All elements with their diagonally downward elements towards right

Answer: None of the above

 

Question: In any period the valency of an element with respect to oxygen

  • a) Increases one by one from IA to IVA and then decreases from VA to VIIA one by one
  • b) Decreases one by one from IA to IVA and then increases from VA to VIIA one by one
  • c) Decreases one by one form IA to VIIA
  • d) Increases one by one from IA to VIIA

Answer: Increases one by one from IA to IVA and then decreases from VA to VIIA one by one

 

Question: What will be the formula of the compound formed by the silicon and bromine ?

  • a)

  • b)

  • c)

  • d)

Answer:

 

Question: Which of the following sequence correctly represents the decreasing acidic nature of oxides ?

  • a)

  • b)

  • c)

  • d) All of these

Answer:

 

Question: Choose the correct coding for following statements. Here T stands for True and F stands for False statement.

(i) Mendeleev left several gaps in his periodic table for the undiscovered elements.
(ii) The gap under aluminium and a gap under silicon was left and these elements were called Eka aluminium and Eka silicon.
(iii) Germanium was placed in place of Eka-aluminium and gallium was placed in place of Eka silicon.

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

Answer: TTF

 

Question: Which of the following statement(s) about the modern periodic table is/are incorrect ?

(i) The elements in the modern periodic table are arranged on the basis of their decreasing atomic number
(ii) The elements in the modern periodic table are arranged on the basis of their increasing atomic masses
(iii) Isotopes are placed in adjoining group(s) in the periodic table
(iv) The elements in the modern periodic table are arranged on the basis of their increasing atomic number

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

Answer: (i), (ii) and (iii)

 

Question: Consider the following statements:

(i) The discovery of inert gases later on did not disturb Mendeleev's arrangement.
(ii) In the present periodic table, periodicity in the properties of elements is related to the periodicity in their electronic configurations.
Which of these statement(s) is/are correct ?

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

Answer: Both (i) and (ii)

 

Question:

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

Answer: (i), (ii) and (iv)

 

Question: With reference to the chemical element with atomic number 17, consider the following statements:

(i) It belongs to second period in the periodic table of chemical elements.
(ii) It forms anion with unit negative charge.
Which of the statement(s) given above is/are correct ?

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

Answer: (ii) only

 

Question: Choose the correct codes for the following statements related to s-block elements. Here ‘T’ stands for true and F stands for false statement.

(i) They are all reactive metals with low ionization enthalpies.
(ii) Their metallic character and reactivity increase as we go down the group.
(iii) They are found in pure form in nature.
(iv) All the compounds of s-block elements are ionic in nature.

  • a) TTFF
  • b) TTTF
  • c) TTFT
  • d) TFFF

Answer: TTFF

 

Question: Consider the following statements:

(i) The elements silicon, germanium and arsenic are called metalloids.
(ii) Metalloids have properties quite different from those of metals and non-metals.
Which of these statement(s) is/are correct ?

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

Answer: Both (i) and (ii)

 

Question: Periodic classification of elements is used to examine the

  • a) Both
  • b) periodic trends in chemical properties of elements
  • c) periodic trends in physical properties of elements
  • d) None of these

Answer: Both

 

Question: Cl, Br, I, if this is Dobereiner’s triad and the atomic masses of Cl and I are 35.5 and 127 respectively the atomic mass of Br is

  • a) 81.25
  • b) 162.5
  • c) 91.5
  • d) 45.625

Answer: 81.25

 

Question: If the two members of a Dobereiner triad are phosphorus and antimony, the third member of this triad is

  • a) arsenic
  • b) iodine
  • c) sulphur
  • d) calcium

Answer: arsenic

 

Question: The law of triads is applicable to a group of

  • a) Cl, Br, I
  • b) Na, K, Rb
  • c) C, N, O
  • d) H, O, N

Answer: Cl, Br, I

 

Question: In 1800, only ....X.... elements were known. Here, X refers to

  • a) 31
  • b) 92
  • c) 63
  • d) 114

Answer: 31

 

Question: Johann Doberiner gave the idea of trends among physical and ...X... of several groups of three elements. Here, X refers to

  • a) chemical properties
  • b) atomic number
  • c) atomic mass
  • d) None of these

Answer: chemical properties

 

Question: Which of the following is the correct set of elements to Dobereiner’s triads ?

  • a)

  • b)

  • c)

  • d) Data insufficient

Answer:

 

Question: On which of the following Dobereiner’s Triad law is not applicable?

  • a) F, Cl, Br
  • b) Cl, Br, I
  • c) Ca, Sr, B
  • d) Li, Na, K

Answer: F, Cl, Br

 

Question: Newlands could classify elements only upto

  • a) calcium
  • b) copper
  • c) chlorine
  • d) chromium

Answer: calcium

 

Question: According to Newlands theory, when elements are arranged in the order of increasing atomic weight which number element had similar properties to the first element

  • a) eighth
  • b) third
  • c) seventh
  • d) sixth

Answer: eighth

 

Question: Lothar Meyer plotted the physical properties such as atomic volume, melting point and ...X... against atomic weight. Here, X refers to

  • a) boiling point
  • b) mass
  • c) None of these
  • d) surface tension

Answer:  boiling point

 

Question: The most significant contribution towards the development of periodic table was made by

  • a) Mendeleev
  • b) Dalton
  • c) Avogadro
  • d) Cavendish

Answer: Mendeleev

 

Question: Noble gases were included in Mendeleev’s periodic table in the

  • a) None of these
  • b) 7th group
  • c) 1st group
  • d) 8th group

Answer: None of these

 

Question: Mendeleev classified elements in

  • a) seven periods and nine groups
  • b) eight periods and seven groups
  • c) eight periods and eight groups
  • d) increasing order of atomic groups

Answer: seven periods and nine groups

 

Question: Select the correct chronological order for the discoveries of the following scientists.

Dobereiner, Newlands, Chancourtois, Mendeleev

  • a) Dobereiner, Chancourtois, Newlands, Mendeleev
  • b) Chancourtois, Dobereiner, Newlands, Mendeleev
  • c) Dobereiner, Newlands, Chancourtois, Mendeleev
  • d) Chancourtois, Newlands, Dobereiner, Mendeleev

Answer: Dobereiner, Chancourtois, Newlands, Mendeleev

 

Question: The molecular formula of chloride of Eka-Aluminium and Eka-Silicon respectively are

  • a)

  • b)

  • c)

  • d)

Answer:

 

Question: Who developed long form of the periodic table?

  • a) Neils Bohr
  • b) Moseley
  • c) Mendeleev
  • d) Lothar Meyer

Answer: Neils Bohr

 

Question: At present, how many elements are known

  • a) 118
  • b) 112
  • c) 110
  • d) 113

Answer: 118

 

Question: Which of the scientists given below discovered that periodic table should be based on the atomic number ?

  • a) Moseley
  • b) Mendeleev
  • c) Newlands
  • d) Lothar Meyer

Answer: Moseley

 

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