Subject

Chemistry

Class

NEET Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

1.

The sequence of ionic mobility in aqueous solution is 

  • K+ > Na+ > Rb+ > Cs+

  • Cs+ > Rb+ > K+ >Na+

  • Rb+ > K+> Cs+ > Na+

  • Rb+ > K+> Cs+ > Na+


B.

Cs+ > Rb+ > K+ >Na+

The sequence of ionic mobility in aqueous solution is 

675 Views

2.

The correct order of decreasing second ionisation enthalpy of Ti (22), V (23), Cr(24) and Mn (25) is 

  • Cr > Mn> V > Ti

  • V > Mn > Cr >Ti

  • Mn > Cr> Ti >V

  • Mn > Cr> Ti >V


A.

Cr > Mn> V > Ti

The correct order of decreasing second ionisation enthalpy of Ti (22), V (23), Cr(24) and Mn (25) is 

917 Views

3.

If a gas expands at constant temperature, it indicates that

  • the kinetic energy of molecules decrease

  • the pressure of the gas increases

  • the kinetic energy of molecules remains the same

  • the kinetic energy of molecules remains the same


C.

the kinetic energy of molecules remains the same

If a gas expands at constant temperature, it indicates that

419 Views

4.

For the gas phase, reaction,

PCl5 (g) ⇌ PCl3 (g) Cl2 (g)
Which of the following conditions are correct?

  • Δ H = 0 and ΔS > 0

  • ΔH >0 and ΔS > 0

  • Δ H < 0 and ΔS < 0

  • Δ H < 0 and ΔS < 0


B.

ΔH >0 and ΔS > 0

For the gas phase, reaction,

PCl5 (g) ⇌ PCl3 (g) Cl2 (g)
Which of the following conditions are correct?

1482 Views

5.

Number of moles of MnO4- required to oxidies one mole of ferrous oxalate completely in acidic medium will be 

  • 0.6 mole

  • 0.4 mole

  • 7.5 mole

  • 7.5 mole


A.

0.6 mole

Number of moles of MnO4- required to oxidies one mole of ferrous oxalate completely in acidic medium will be 

407 Views

6.

If uncertanity in position and momentum are equal, then uncertaninty in velocity is 

  • fraction numerator 1 over denominator 2 straight m end fraction square root of straight h over straight pi end root
  • square root of fraction numerator straight h over denominator 2 straight pi end fraction end root
  • 1 over straight m square root of h over pi end root
  • 1 over straight m square root of h over pi end root

A.

fraction numerator 1 over denominator 2 straight m end fraction square root of straight h over straight pi end root

If uncertanity in position and momentum are equal, then uncertaninty in velocity is 

477 Views

7.

Equal volumes of three acid solutions of pH 3.4 and 5 are mixed in a vessel. What will be the H+ ion concentration in the mixture?

  • 1.11 x 10-4 M

  • 3.7 x 10-4

  • 3.7 x 10-3 M

  • 3.7 x 10-3 M


B.

3.7 x 10-4

Equal volumes of three acid solutions of pH 3.4 and 5 are mixed in a vessel. What will be the H+ ion concentration in the mixture?

2181 Views

8.

Which of the following are not state functions?
I) q + W
II) q
III) W
IV) H-TS

  • (I) and (IV)

  • (II) (III) and (IV)

  • (I), (II) and (III)

  • (I), (II) and (III)


D.

(I), (II) and (III)

Which of the following are not state functions?
I) q + W
II) q
III) W
IV) H-TS

639 Views

9.

The angular shape of ozone molecule (O3) consists of 

  • 1 sigma and 2 pi bonds

  • 2 sigma and 2 pi bonds

  • 1 sigma and 1 pi bonds

  • 1 sigma and 1 pi bonds


D.

1 sigma and 1 pi bonds

The angular shape of ozone molecule (O3) consists of 

785 Views

10.

If the concentration of OH- ions in the reaction Fe(OH)3 (s)  ⇌ Fe3+ (aq) + 3OH-(aq) is decreased by 1/4 times, then equilibrium concentration of Fe3+ will increase by 

  • 8 times

  • 16 times

  • 64 times

  • 64 times


C.

64 times

If the concentration of OH- ions in the reaction Fe(OH)3 (s)  ⇌ Fe3+ (aq) + 3OH-(aq) is decreased by 1/4 times, then equilibrium concentration of Fe3+ will increase by 

1381 Views