Subject

Chemistry

Class

NEET Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

11.

25 mL, 0.2 M Ca(OH)2 is neutralised by 10 mL of 1 M HCI. Then pH of resulting solution is

  • 1.37

  • 9

  • 12

  • 7


12.

Which of the following is not a thermodynamic function?

  • Internal energy

  • Work done

  • Enthalpy

  • Entropy


13.

Which of the following is intensive property?

  • Enthalpy

  • Entropy

  • Specific heat

  • Volume


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14.

For a first order gas phase reaction-

A(g)  2B(g) + C(g)

P0 be initial pressure of A and P, the total pressure at time 't'. Integrated rate equation is

  • 2.303tlogP0P0 - Pt

  • 2.303tlog2P03P0 - Pt

  • 2.303tlogP02P0 - Pt

  • 2.303tlog2P02P0 - Pt


B.

2.303tlog2P03P0 - Pt

Initial  A(g)P0P0-P  2B(g)02P + C(g)0P

Total pressure at time (t) = P0 - P + 2P + P = Pt

 Pt = P0 + 2P

 Pt - P0 = 2P

 P = Pt - P02 

k = 2.303tlogP0P0 - P = 2.303tlogP0P0 - Pt - P02= 2.303tlog2P02P0 - Pt + P0= 2.303tlog2P03P0 - Pt


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15.

The number of σ- and π-bonds present in pent-4-ene-1-yne is

  • 10, 3

  • 4, 9

  • 3, 10

  • 9, 4


16.

Assertion : H2S is less acidic than H2Te.

Reason : Te has larger, radius than S.

  • If both assertion and reason are true and reason is the correct explanation of assertion

  • If both assertion and reason are true but reason is not the correct explanation of assertion

  • If assertion is true but reason is false

  • If both assertion and reason are false.


17.

Assertion : R3P=O exists but R3N=O does not exist.

Reason : P is more electronegative than N.

  • If both assertion and reason are true and reason is the correct explanation of assertion

  • If both assertion and reason are true but reason is not the correct explanation of assertion

  • If assertion is true but reason is false

  • If both assertion and reason are false.


18.

Assertion : AgCl is more soluble in NH3 than in water.

Reason : Ammonia is more polar than water.

  • If both assertion and reason are true and reason is the correct explanation of assertion

  • If both assertion and reason are true but reason is not the correct explanation of assertion

  • If assertion is true but reason is false

  • If both assertion and reason are false


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19.

Assertion : Helium is used in diving apparatus.

Reason : Solubility of helium is less in blood.

  • If both assertion and reason are true and reason is the correct explanation of assertion

  • If both assertion and reason are true but reason is not the correct explanation of assertion

  • If assertion is true but reason is false

  • If both assertion and reason are false.


20.

Assertion : A reaction is spontaneous if Ecell = +ve.

Reason : For Ecell = +ve, G is always -ve.

  • If both assertion and reason are true and reason is the correct explanation of assertion

  • If both assertion and reason are true but reason is not the correct explanation of assertion

  • If assertion is true but reason is false

  • If both assertion and reason are false


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