NTSE Chemistry Atomic Structure and Nuclear Chemistry MCQs Set B

Question: The triad of nuclei that is isotonic is -

• a)

  

• b)

  

• c)

  

• d)

  

Answer:

Question: Bohr advanced the idea of -

• a) Stationary electrons

• b) Stationary nucleus

• c) Stationary orbits

• d) Elliptical orbits

Answer: Elliptical orbits

Question: Which of the following statements does not form a part of Bohr’s model of hydrogen atom ?

• a) Energy of the electron in the orbit is quantized.

• b) The electron in the orbit nearest to the nucleus has the lowest energy.

• c) Electrons revolve in different orbits around the nucleus.

• d) The position and velocity of the electron in the orbit cannot be determined simultaneously.

Answer: Electrons revolve in different orbits around the nucleus.

Question: The atomic orbital is-

• a) The circular path of the electron.

• b) Elliptical shaped orbit.

• c) Three dimensional field around nucleus.

• d) The region in which there is maximum probability of finding an electron.

Answer: The region in which there is maximum probability of finding an electron.

Question: Any p - orbital can accommodate up to -

• a) 4 electrons

• b) 2 electrons with parallel spins

• c) 6 electrons

• d) 2 electrons with opposite spins

Answer: 2 electrons with opposite spins

Question: The total number of orbitals in a principal shell are -

• a) n

• b) n2  

• c) 2n2

• d) 3n2

Answer: 3n2

Question: How many unpaired electrons are there in Ni²⁺ (Z = 28) ?

• a) 0

• b) 8

• c) 2

• d) 4

Answer: 8

Question: The energy is lowest for the orbital -

• a) 3d

• b) 4p

• c) 4s

• d) 4f

Answer: 4s

Question: Nitrogen atom has unpaired electrons. This can be explained on the basis of -

• a) Hund’s rule of maximum

• b) Aufbau principle

• c) Pauli’s exclusion principle

• d) Heisenberg principle

Answer: Pauli’s exclusion principle

Question:  The number of d-electrons in Fe²⁺ (At. No. 26( is not equal to that of the -

• a) p-electrons in Ne (At. No. 10)

• b) s-electrons in Mg (At. No. 12)

• c) d-electrons in Fe atom

• d) p-electrons in CI- ion (At. No. 17)

Answer: p-electrons in Ne (At. No. 10)

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

Question: In most stable elements, the number of protons and neutrons are -

• a) Odd-odd

• b) Even-even

• c) Odd-even

• d) Even-odd

Answer: Even-odd

Question: For which of the following species, Bohr theory does not apply ?

• a) H

• b) H+ 

• c) He+ 

• d) Li²⁺

Answer: H+ 

Question: If the nitrogen atom had electronic configuration 1s7, it would have energy lower than that of the normal ground state configuration 1s2, 2s2 2p3, because the electrons would be closer to the nucleus. Yet 1s7 is not observed because it violates -

• a) Heisenberg uncertainty principle

• b) Hund Rule

• c) Pauli exclusion principle

• d) Bohr postulate of stationary orbits

Answer: Hund Rule

Question:

atom. The value of x is -

• a) 8

• b) 16

• c) 9

• d) 7

Answer: 9

Question: In which of the following orbital diagrams are both Pauli’s exclusion principle and Hund’s rule violated ?

• a)

  

• b)

  

• c)

  

• d)

  

Answer:

Question: Energy of Bohr’s orbit -

• a) Increase as we move away from the nucleus.

• b) Decreases as we move away from the nucleus.

• c) Remains the same as we move away from the nucleus.

• d) None of these.

Answer: None of these.

Question: Out of the following radiation, the most easily stopped by air is -

• a) α rays    

• b) β rays    

• c) γ rays    

• d) χ rays    

Answer: α rays    

Question: A magnet will cause greatest deflection of -

• a) γ rays   

• b) β rays   

• c) α rays   

• d) Neutrons

Answer: β rays   

Question: The half life periods of four isotopes are given below -

• a) 7.6 years

• b) 4000 years

• c) 6000 years

• d) 3.2 × 10.5 years

Answer: 3.2 × 10.5 years

Question: Nuclear reaction accompanied with emission of neutron (s) is -

• a)

  

• b)

  

• c)

  

• d)

  

Answer:

Question: Which of the following is an artificial fuel for nuclear reactors ?

• a) ²³⁸U     

• b) ²³⁹Pu       

• c) ²³⁵U   

• d) ²³²Th 

Answer: ²³⁹Pu       

Question: In nuclear reactors, the speed of neutrons is slowed down by-

• a) Heavy water

• b) Ordinary water

• c) Zinc rods

• d) Molten caustic soda

Answer: Heavy water

Question: One gram of mass is equal to -

• a) 5 × 10¹⁰ erg  

• b) 9 × 10²⁰ erg  

• c) 7 × 105 erg

• d) 11 × 11¹² erg

Answer: 9 × 10²⁰ erg  

Question: In treatment of cancer, which of the following is used ?

• a)

  

• b)

  

• c)

  

• d)

  

Answer:

Question: Which of the following statements is wrong ?

• a) Neutron was discovered by Chadwick.

• b) Nuclear fission was discovered by Hahn and Strassmann.

• c) Polonium was discovered by Madam Curie.

• d) Nuclear fusion was discovered by Fermi.

Answer: Nuclear fusion was discovered by Fermi.

Question: The source of enormous energy so sun is due to -

• a) Fusion of hydrogen to form helium.

• b) Fission of uranium.

• c) Fusion of deuterium and tritium.

• d) Fusion of tritium to form helium

Answer: Fusion of hydrogen to form helium.

Question:

 is expected to disintegrate by-          

• a) α-emission 

• b) β-emission 

• c) positron emission

• d) proton emission

Answer: β-emission 

Question: The density of nucleus is of the order of -

• a) 105 kg m^-3 

• b) 10¹⁰ kg m^-3   

• c) 10¹⁷ kg m^-3 

• d) 10²⁵ kg m^-3

Answer: 10¹⁷ kg m^-3 

Question: SI Unit of radioactive decay is-

• a) Curie

• b) Rutherford

• c) Becquerel

• d) All

Answer: Becquerel

Question: Fusion reaction takes place at high temperature because -

• a) Atoms are ionized at high temperature.

• b) Molecules break up at high temperature.

• c) Nuclei break up at high temperature.

• d) Kinetic energy is high enough to overcome repulsion between nuclei.

Answer: Kinetic energy is high enough to overcome repulsion between nuclei.

Question: In the radioactive change-

The radiations emitted in sequence are -

• a) α ,β ,γ

• b) β,α, γ

• c) γ,α ,β 

• d) β ,γ,α

Answer: β,α, γ

Question: The half-life of a radioactive isotope is three hours. If the initial mass of the isotope were 256 g, the mass of it remaining undecayed after 18 hours would be -

• a) 12 g

• b) 16 g

• c) 4 g

• d) 8 g

Answer: 4 g

Question: A freshly prepared radioactive sample of half-life 2 hours emits radiation of intensity which is 64 times the permissible safe level. The minimum time after which it would be possible to work safely with this source is -

• a) 6 hrs

• b) 12 hrs

• c) 24 hrs

• d) 128 hrs

Answer: 12 hrs

Question: Two element P and Q and half lives of 10 and 15 minutes respectively. Freshly prepared samples of each isotope initially contain the same number of atoms as oneanother. After 30 minutes, the ratio  

• a) 0.5

• b) 2

• c) 1

• d) 3

Answer: 0.5

Question: The half life period of a radioactive element depends upon -

• a) Temperature.

• b) Pressure.

• c) The amount of radioactive element taken initially.

• d) Nature of the radioactive element.

Answer: Nature of the radioactive element.

Question: A radioactive atom ‘X’ emits a β -particle to produce an atom ‘Y’ which then emits an α-particle to give an atom ‘Z’ - 

            (a) The atomic number of ‘X’ is les than the of ‘Z’

            (b) The atomic number of ‘Y’ is less than that of ‘Z’

            (c) The mass number of ‘X’ is same as that of ‘Y’     

• a) (a), (b) and (c) are correct

• b) (a) and (b) are correct

• c) (b) and (c) are correct

• d) (c) is correct

Answer: (c) is correct

Question: The mass of proton is same as that of :

• a) Carbon atom

• b) An electron

• c) Hydrogen ion

• d) Oxygen atom

Answer: Hydrogen ion

Question: The ratio of the mass of the proton to the mass of the electron is nearly -

• a) 2000

• b) 4801

• c) 1840

• d) 8140

Answer: 1840

Question: Which of the following has zero electron affinity ?

• a) Radon

• b) Nitrogen

• c) Oxygen

• d) Radium

Answer: Radon

Question: An atom of an elements has 15 electrons in M shell and 2 electrons in N shell. Atomic number of the element will be:

• a) 2

• b) 15

• c) 17

• d) 27

Answer: 27

Question: The question given below consist of two statements each printed as Assertion (a) and Reason (r).

While answering these question you are required to choose any one of the following four-

Assertion : The electronic configuration of nitrogen atom is represented.

and not as

Reason : The electronic configuration of the ground state of an atom is the one which has the greatest multiplicity.

• a) If both (a) and (r) are correct and (r) is the correct explanation for (a).

• b) If both (a) and (r) are correct and (r) is not the correct explanation for (a).

• c) If (a) is correct but (r) is incorrect.

• d) If (a) is incorrect and (r) is correct.

Answer: If both (a) and (r) are correct and (r) is the correct explanation for (a).

Question: The question given below consist of two statements each printed as Assertion (a) and Reason (r). While answering these question you are required to choose any one of the following four- Assertion : An orbital cannot have more than two electrons. Reason : The two electrons in an orbital create opposite magnetic field.

• a) If both (a) and (r) are correct and (r) is the correct explanation for (a).

• b) If both (a) and (r) are correct and (r) is not the correct explanation for (a).

• c) If (a) is correct but (r) is incorrect.

• d) If (a) is incorrect and (r) is correct.

Answer: If both (a) and (r) are correct and (r) is not the correct explanation for (a).

Question: The questions given below consist of two statements each printed as Assertion (a) and Reason (r). 

While answering these question you are required to choose any one of the following four- 

Assertion : In Rutherford’s gold foil experiment, very few α — particles are deflected back. 

Reason :  Nucleus present inside the atom is heavy.

• a) If both (a) and (r) are correct and (r) is the correct explanation for (a).

• b) If both (a) and (r) are correct and (r) is not the correct explanation for (a).

• c) If (a) is correct but (r) is incorrect.

• d) If (a) is incorrect and (r) is correct.

Answer: If both (a) and (r) are correct and (r) is not the correct explanation for (a).

Question: The questions given below consist of two statements each prints as Assertion (A) and Reason (R). 

While answering these question you are required to choose any one of the following four -

Assertion :  α— rays have greater ionising power than β

Reason :  α— particle carry  + 2 charge while  β —particle carry only - 1charge

• a) If both (A) and (R) are correct and (R) is the correct explanation for (A).

• b) If both (A) and (R) are correct and (R) is not the correct explanation for (A).

• c) If (A) is correct but (R) is incorrect.

• d) If (A) is incorrect and (R) is correct.

Answer: If both (A) and (R) are correct and (R) is not the correct explanation for (A).

Question: The questions given below consist of two statements each prints as Assertion (A) and Reason (R). While answering these question you are required to choose any one of the following four -

Assertion : β —particles have greater penetrating power than α—rays but less than  γ- rays.

 Reason : β —particles are lighter than α- but heavier than  γ- rays.

• a) If both (A) and (R) are correct and (R) is the correct explanation for (A).

• b) If both (A) and (R) are correct and (R) is not the correct explanation for (A).

• c) If (A) is correct but (R) is incorrect.

• d) If (A) is incorrect and (R) is correct.

Answer: If both (A) and (R) are correct and (R) is the correct explanation for (A).

Question: The questions given below consist of two statements each prints as Assertion (A) and Reason (R). While answering these question you are required to choose any one of the following four - Assertion : In a radioactive disintegration an electron is emitted by the nucleus. Reason : Electrons are always present inside the nucleus.

• a) If both (A) and (R) are correct and (R) is the correct explanation for (A).

• b) If both (A) and (R) are correct and (R) is not the correct explanation for (A).

• c) If (A) is correct but (R) is incorrect.

• d) If (A) is incorrect and (R) is correct.

Answer: If (A) is correct but (R) is incorrect.

Question: The question given below consist of two statements each prints as Assertion (A) and Reason (R). While answering these question you are required to choose any one of the following four - Assertion ; Protons are better projectiles than neutrons. Reason : The neutrons being neutral do not experience repulsion from + vely charged nucleus.

• a) If both (A) and (R) are correct and (R) is the correct explanation for (A).

• b) If both (A) and (R) are correct and (R) is not the correct explanation for (A).

• c) If (A) is correct but (R) is incorrect.

• d) If (A) is incorrect and (R) is correct.

Answer: If (A) is incorrect and (R) is correct.

Question:  The question given below consist of two statements each prints as Assertion (A) and Reason (R). While answering these question you are required to choose any one of the following four - 

Assertion : The position of an element in periodic table after emission of one α- and two  β — particles remains unchanged. 

Reason : Emission of one α— and two  β—particles gives isotope of the parent element which acquires same position is the periodic table.

• a) If both (A) and (R) are correct and (R) is the correct explanation for (A).

• b) If both (A) and (R) are correct and (R) is not the correct explanation for (A).

• c) If (A) is correct but (R) is incorrect.

• d) If (A) is incorrect and (R) is correct.

Answer: If both (A) and (R) are correct and (R) is the correct explanation for (A).

Question: The maximum number of orbital in L - shell is -

• a) 1

• b) 4

• c) 3

• d) 6

Answer: 4

Question: Maximum number of orbital in N - shell is -

• a) 4

• b) 9

• c) 16

• d) 25

Answer: 16

Question. A radioactive element decays as follows

Which of the following statements are correct set?
a. After two hours, less than 10% of the initial ‘X’ is left
b. Atomic number of X and Z are same
c. Maximum amount of Y present at any time before 30 minutes is less than 50% of the initial amount of X
d. The mass number of Y is greater than X
Answer : A, B, C

Question. Pick out the correct statement(s) from among the following:
a. One gram each of radium elemental and RaSO₄ will have the same activity
b. The beta particle emitted by a radioactive element is from valence shell of the atom
c. Nuclear isomers will have the same mass numbers as well as atomic number
d. The fraction decayed during ‘n’ half lives is 2ⁿ - 1/2ⁿ
Answer : C, D

Question. The unit of radioactivity is:
a. Curie
b. Rutherford
c. Becquerel
d. None of these
Answer : A, B, C

Question. In a zero-order reaction:
a. The rate constant has the unit mol L⁻¹ S⁻¹
b. The rate is independent of the concentration of the reactants
c. The half-life depends of the temperature of the reactants
d. The rate is independent of the temperature of the reaction
Answer : A, B, C

Question. Which of the following statements are correct?
a. ²³⁵₉₂U undergoes β- decay preferentially
b. The nuclear fusion 4¹₁H→ ⁴₂He + Qoccurring at sun and stars is catalyzed by ¹⁴C
c. At steady state, the element with the higher half life is present in largest amount
d. Helium, carbon and oxygen do not lie on the curve of the plot of mass number and binding energy of nucleon (MeV) indicating that they are exceptitionally stable.
Answer : C, D

Question. Which one of the following notations shows the product incorrectly?
a. ²⁴²₉₆Cm (α , 2n) ²⁴³₉₇Bk
b. ¹⁰₅B, (α , 2n) ¹³₇N
c. ¹⁴₇N, (n, p) ¹⁴₇C
d. ²⁸₁₄Si, (d, n) ²⁹₁₅P
Answer : A, B

Question. Heavy water is used as:
a. Control rods
b. Moderator
c. Fuel
d. Coolant
Answer : B, D

Question. The disintegration of an isotope of sodium.
₁₁Na²⁴ → ₁₂Mg²⁴ + ₋₁e⁰ shown is due to:
a. The emission of β- radiation
b. The formation of a stable nuclide
c. The fall in the neutron: proton ratio
d. None of these
Answer : A, B, C

Question. It is observed that only 0.39% of the original radioactive sample remains un-decayed after eight hours. Hence:
a. The half-life of that substance is 1 hour
b. The mean life of the substance is (1/log_e2)hour
c. Decay constant of the substance is ((log_e 2) hour⁻¹
d. If the number of radioactive nuclei of this substance at a given instant is 108 then the number left after 30 min would be √2 x 10⁹
Answer : A, B, C

Question. Identify the correct statements:
a. On bombarding ¹⁴₇N nuclei with α - particle, the nuclei of the product formed after release of proton would be ¹⁷₈O
b. ²²⁸₈₉Ac and ²²⁹₉₀Th belong respectively to Actinium and neptunium series
c. Nuclide and its decay product after α - emission are called isodiaphers
d. Half life of radium is 1580 years. Its average life will be 1097.22 years
Answer : AC

Question. Select correct statements:
a. Smaller the packing fraction of an element the greater will be the stability of its nucleus
b. Packing fraction is negative when the isotropic mass is less than the mass number
c. Packing fraction is positive when the isotropic mass is less than the mass number
d. Packing fraction is highest for hydrogen and least for iron
Answer : ABD

Question. The decay constant of a radioactive substance is 0.173 (years)^–1. Therefore: 
a. nearly 63% of the radioactive substance will decay in (1/0.173) years
b. Half life of the radioactive substance is (1/0.173) year
c. one-fourth of the radioactive substance will be left after 8 years
d. all the above statements are true
Answer : A, C

Question. Decrease in atomic number is observed during:
a. Alpha emission
b. Beta emission
c. Positron emission
d. Electron capture
Answer : A, C, D

Question. Isotopes are those which contain?
a. Same number of neutrons
b. Same physical properties
c. Same chemical properties
d. Different atomic mass
Answer : C, D

Question. At any instant the ratio of the amount of radioactive substances is 2 : 1. If their half lives be respectively 12 and 16 hours, then after two days, what will be the ratio of the substances?
a. 1 : 1
b. 2 : 1
c. 1 : 2
d. 1 : 4
Answer : A

Assertion and Reason

Note: Read the Assertion (A) and Reason (R) carefully to mark the correct option out of the options given below:
a. If both assertion and reason are true and the reason is the correct explanation of the assertion.
b. If both assertion and reason are true but reason is not the correct explanation of the assertion.
c. If assertion is true but reason is false.
d. If the assertion and reason both are false.
e. If assertion is false but reason is true.

Question. Assertion: An example of K-capture is¹³³₅₆Ba + e^- →¹³³₅₅Cs + X – ray.
Reason: The atomic number decreases by one unit as result of K-capture.
Answer : B

Question. Assertion: Photochemical smog is produce by nitrogen oxides.
Reason: Vehicular pollution is a major sources of nitrogen oxides.
Answer : B

Question. Assertion: Nuclear fission is always accompanied by release of energy. 
Reason: Nuclear fission is a chain process.
Answer : B

Question. Assertion: Mass number of an atom is equal to total number of nucleons present in the nucleus.
Reason: Mass number defines the identity of an atom.
Answer : C

Question. Assertion: ²²₁₁Na emits a position giving ²²₁₂Mg.
Reason: In β+ emission neutron is transformed into proton.
Answer : D

Question. Assertion: Protones are more effective than neutrons of equal energy in causing artificial disintegration of atoms.
Reason: Neutrons are neutral they penetrate the nucleus.
Answer : C

Question. Assertion: The activity of 1 g pure uranium-235 will be greater than the same amount present as U₃O₈.
Reason: In the combined state, the activity of the radioactive element decreases.
Answer : D

Question. Assertion: Radioactive heavy nuclei decay by a series ofα- and/or β- emission, to form a stable isotope of lead.
Reason: Radioactivity is a physical phenomenon.
Answer : C

Question. Assertion: Actinium series is so called because it starts with an isotope of actinium.
Reason: Actinium is formed in the nature as such and is not formed from the disintegration of any other radioisotope.
Answer : D

Question. Assertion: A beam of electrons deflects more than a beam of α- particles in an electric field.
Reason: Electrons possess negative charge while α- articles possess positive charge.
Answer : B

Comprehension Based

Paragraph –I

The β- decay process, discovered around 1900, is basically the decay of a neutron (n). In the laboratory, a proton (p) and an electron ( e− ) are observed as the decay products of the neutron. Therefore, considering the decay of a neutron as a two-body decay process, it was predicted theoretically that the kinetic energy of the electron should be a constant. But experimentally, it was observed that the electron kinetic energy has a continuous spectrum. Considering a three-body decay process, i.e., n → p + e¯ + v¯_e , around 1930, Pauli explained the observed electron energy spectrum. Assuming the anti-neutrino (v¯_e) to be massless and possessing negligible energy, and the neutron to be at rest, momentum and energy conservation principle are applied. From this calculation, the maximum kinetic energy of the electron is 0.8×10⁶ eV. The kinetic energy carried by the proton is only the recoil energy.

Question. If the anti-neutrino had a mass of 3eV/c² (where c is the speed of light) instead of zero mass, what should be the range of the kinetic energy K, of the electron?
a. 0 ≤ K ≤ 0.8 × 10⁶ eV
b. 3.0eV ≤ K ≤ 0.8×10⁶ eV
c. 3.0eV ≤ K < 0.8×10⁶ eV
d. 0 ≤ K < 0.8×10⁶ eV
Answer : D

Question. What is the maximum energy of the anti-neutrino?
a. Zero
b. Much less than 0.8×10⁶ eV
c. Nearly 6 0.8×10 eV
d. Much larger than 6 0.8×10⁶ Ev
Answer : C

Paragraph – II

The mass of a nucleus ^A_ZX is less than the sum of the masses of (A – Z) number of neutrons and Z number of protons in the nucleus. The energy equivalent to the corresponding mass difference is known as the binding energy of the nucleus. A heavy nucleus of mass M can break into two light nuclei of masses m₁ and m₂ only if (m₁ + m₂) < M. Also two light nuclei of masses m₃ and m₄ can undergo complete fusion and form a heavy of mass ‘M’ only if (m₃ + m₄) > M'.
The masses of some neutral atoms are given in the table below:

Question. The correct statement is:
a. The nucleus ⁶₃Li can emit an alpha particle
b. The nucleus ²¹⁰₈₄Po can emit a proton
c. Deuteron and alpha particle can undergo complete fusion
d. The nuclei ⁷⁰₃₀Zn and ⁸²₃₄Se can undergo complete fusion
Answer : A

Integer

Question. An emission of β- particle increases the atomic number of parent element by:
Answer : 1

Question. After 20 min. the amount of certain radioactive substance disintegrate was 15/16th of the original amount. What is the half-life of the radioactive substance?
Answer : 3

Question. The half-life period of a radioactive substance is 2 min.
The time taken for 1 g of the substance to reduce to 0.25 g will be:
Answer : 2

Question. ₉₂U²³⁵ nucleus absorbs a neutron and disintegrates into ₉₄Xe¹³⁹ ₅₄Sr³⁸ , , and x. What will be the product x?
Answer : 1

Question. In the following given numbers, how many are the magic numbers?
2, 8, 20, 50, 113, 126, 141, 148, 300, 314
Answer : 3

Question. The intensity of gamma radiation from a given source is I.
On passing through 27 mm of lead, it is reduced to 1/8.
The thickness of lead which will reduced the intensity to I/2 will be:
Answer : 9

Question. The half life of a freshly prepared radioactive sample is 2 h. If the sample emits radiation of intensity, which is 16 times the permissible safe level, then the minimum time taken after which it would be possible to work safely with source is:
Answer : 8

Match the Column

Question. Some laws/processes are given in Column I. Match these with the physical phenomena given in Column II:

a. A→ 1,2; B→ 1,3; C→ 1,4; D→ 1,2,3
b. A→ 1; B→ 1,2; C→ 1,4; D→ 1,2,3
c. A→ 1,2; B→ 1,3; C→ 4; D→ 1,3
d. A→ 2; B→ 1,3; C→ 1,4; D→ 2,3
Answer : A

Question. Some laws/processes are given in Column I. Match these with the physical phenomena given in Column II:

a. A→ 1,2; B→ 1,3; C→ 4; D→ 3
b. A→ 1,2; B→ 1,3; C→ 1,4; D→ 1,2,3
c. A→ 1; B→ 1,2; C→ 1,4; D→ 1,2,3
d. A→ 1,3; B→ 1,2,4; C→ 1; D→ 2
Answer : D

Question. Match Column I and Column II choose right one by using code given in list:

a. A→ 2; B→ 1; C→ 3; D→ 5
b. A→ 2; B→ 3; C→ 1; D→ 5
c. A→ 1; B→ 2; C→ 3; D→ 4
d. A→ 3; B→ 5; C→ 2; D→ 5
Answer : B

Question. Match the statement of Column with those in Column II:

a. A→ 4; B→ 3; C→ 1; D→ 2
b. A→ 2; B→ 4; C→ 3; D→ 1
c. A→ 1; B→ 3; C→ 2; D→ 4
d. A→ 4; B→ 1; C→ 3; D→ 2
Answer : A

Question. Match the statement of Column with those in Column II:

a. A→ 3; B→ 1; C→ 4; D→ 2
b. A→ 2; B→ 4; C→ 3; D→ 1
c. A→ 4; B→ 2; C→ 1; D→ 3
d. A→ 4; B→ 1; C→ 3; D→ 2
Answer : C