Subject

Chemistry

Class

NEET Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

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11.

The IUPAC name of the compound CH subscript 3 CH space equals space CHC space identical to space CH is

  • pent - 4 yn - 2- ene

  • pent - 3-en - 1-yne

  • pent - 2- en-4 -yne

  • pent - 2- en-4 -yne


B.

pent - 3-en - 1-yne

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12.

Which of the following expression correctly represents the equivalent conductance at infinite dilution of Al2(SO4)3. Given that straight capital lambda subscript Al to the power of 3 plus end exponent end subscript superscript straight o space and space space straight capital lambda subscript SO subscript 4 superscript 2 minus end superscript end subscript superscript straight oare the equivalent conductance at infinite dilution of the respective ions.

  • 2 straight capital lambda subscript Al to the power of 3 plus end exponent end subscript superscript straight o plus space 3 straight capital lambda subscript SO subscript 4 superscript 2 minus end superscript end subscript superscript straight o
  • straight capital lambda subscript Al to the power of 3 plus end exponent end subscript superscript straight o space plus space space straight capital lambda subscript SO subscript 4 superscript 2 minus end superscript end subscript superscript straight o
  • left parenthesis straight capital lambda subscript Al to the power of 3 plus end exponent end subscript superscript straight o space and space space straight capital lambda subscript SO subscript 4 superscript 2 minus end superscript end subscript superscript straight o right parenthesis space straight x space space 6
  • left parenthesis straight capital lambda subscript Al to the power of 3 plus end exponent end subscript superscript straight o space and space space straight capital lambda subscript SO subscript 4 superscript 2 minus end superscript end subscript superscript straight o right parenthesis space straight x space space 6
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13.

Consider the following relations for emf of an electrochemical cell

A) Emf of cell = (oxidation potential of anode) - (reduction potential of cathode)

B) Emf of cell = (oxidation potential of anode) - ( reducation potential of cathode)

C) Emf of cell = (oxidation potential of anode)- (reduction potential of cathode)

D) Emf of cell = (oxidation potential of anode) - (oxidation potential of anode)-(oxidation potential  of cathode)

  • (C) and (A)

  • (A) and (B)

  • (C) and (D)

  • (C) and (D)

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14.

For vaporisation of water at 1 atm pressure, the values of ΔH and ΔS are 40.63 kJ mol- and 108.8 JK-1 mol-1, respectively. The temperature when Gibbs energy change (ΔG) for this transformation will be zero, is

  • 273.14 K

  • 393.4 K 

  • 373.4 K 

  • 373.4 K 

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15.

Match (I) substances with List (II) processes employed in the manufacture of the substances and select the correct option.

List I

List II

A

Sulphuric acid

1

Haber’s process

B

Steel

2

Bessemer’s process

C

Sodium

3

Lablanc process

D

Ammonia

4

Contact process

  • A

    B

    C

    D

    1

    4 2

    3

  • A

    B

    C

    D

    1

    2

    3

    4

  • A

    B

    C

    D

    4

    3 2 1
  • A

    B

    C

    D

    4

    3 2 1
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16.

The rate of the reaction,

2NO + Cl2 → 2NOCl is given by the rate equation, rate = k[NO]2[Cl2]

The value of the rate constant can be increased by

  • increasing the temperature

  • increasing the concentration of NO

  • increasing the concentration of the Cl2

  • increasing the concentration of the Cl2

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17.

Which one of the following complexes is not expected to exhibit isomerism?

  • [Ni(NH3)(H2O)2]2+

  • [Pt(NH3)2Cl2]

  • [Ni(NH3)2Cl2]

  • [Ni(NH3)2Cl2]

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18.

Which of the following oxidation states is the most common among the lanthanoids

  • 4

  • 2

  • 5

  • 5

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19.

Among the following four compounds

A) Phenol 
B) Methyl Phenol
C) meta - nitrophenol
D) para-nitrophenol

the acidity order is

  • D > C > A > B

  • C > D > A> B

  • A > D > C > B

  • A > D > C > B

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20.

Fructose reduces Tollen's reagent due to 

  • asymmetric carbons

  • primary alcoholic group

  • secondary alcoholic group

  • secondary alcoholic group

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