JEE Chemistry Solved Question Paper 2017 | Previous Year Papers | Zigya

Subject

Chemistry

Class

JEE Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

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1.

Uncertainty principle is valid for

  • Proton

  • Methane

  • Both (a) and (b)

  • 1 µm sized platinum particles


2.

The energy of an electron is the 3S orbital ( excited state) of H- atom is

  • -1.5 eV

  • -13.6 eV

  • -3.4 eV

  • -4.53 eV


3.

Among the following, the molecule that will have the highest dipole movement is

  • H2

  • HF

  • HBr

  • HCl


4.

Which of the following pair have identical bond order?

  • CN- and NO+

  • CN- and O2-

  • CN- and CN+

  • NO+ and O2-


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5.

A gas will approach ideal behavior at

  • Low temperature and low pressure

  • Low temperature and high pressure

  • High temperature and low pressure

  • High temperature and high pressure


6.

Pressure of ideal and real gases at 0K are

  • >0 and 0

  • <0 and 0

  • 0 and 0

  • 0 and >0


7.

For the process A (1, 0.05 atm, 32°C) → A (g, 0.05 atm, 32°C)

The correct set of thermodynamic parameters is

  • G = 0 and S = -ve

  • G = 0 and S = +ve

  • G = +ve and S = 0

  • G = -ve and S = 0


8.

Mixing of N2 and H2 from an ideal gas mixture at room temperature in a container. For this process, which of the following statement is true?

  • H = 0; Ssurrounding = 0; Ssystem = 0 and G = -ve

  • H = 0; Ssurrounding = 0; Ssystem > 0 and G = -ve

  • H > 0; Ssurrounding = 0; Ssystem > 0 and G = -ve

  • H < 0; Ssurrounding > 0; Ssystem < 0 and G = -ve


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9.

In the ln K vs 1T plot of a chemical process having S° > 0 and H° < 0, the slope is proportional to (where K is equilibrium constant).

  • -|H°|

  • |H°|

  • -


10.

For the process,

32A → B, at 298 K, G° is 163 kJ mol-1. The composition of the reaction mixture is [B] = 1 and [A] = 10000. Predict the direction of the reaction and the relation between reaction quotient (Q) and the equilibrium constant (K).

  • Forwards direction because Q > K

  • Reverse direction because Q > K

  • Forward direction because Q < K

  • Reverse direction because Q < K


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