﻿ NH4COONH2 (s) ⇌ 2NH3 (g) + CO2 (g) ,if equli

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# 11.NH4COONH2 (s) $⇌$ 2NH3 (g) + CO2 (g) ,if equlibrium pressure is 3 atm for the above reaction .Kp for the reaction is :4 27 4/27 1/27

B.

27

NH2COONH4 (s) $⇌$ 2NH3 (g) + CO2 (g)

On applying the law of mass action to this heterogeneous system

Kp

or Kp${\mathrm{P}}_{{\mathrm{NH}}_{3}}^{2}$ X ${\mathrm{P}}_{{\mathrm{CO}}_{2}}$

= 32 X 3

= 9 X 3 = 27

12.

A radioactive nucleus will not emit :

• alpha and beta rays simultaneously

• beta and gamma rays simultaneously

• gamma and alpha rays

• gamma rays only

13.

Which of the following is most polarised ?

• Kr

• He

• Ar

• Xe

14.

If the Vrms is 30 R1/2 at 27oC then calculate the molar mass of gas in kilogram .

• 1 Kg

• 2 Kg

• 0.001 Kg

• 0.002 Kg

15.

The standard molar heat of formation of ethane ,CO2 and water are respectively - 21.1 , - 94.1 and - 68. 3 kcal .The standard molar heat of combustion of ethane will be :

• - 372 kcal

• 162 kcal

• - 240 kcal

• 183.5 kcal

16.

72X180 $\stackrel{2\mathrm{\alpha }}{\to }$ $\stackrel{\mathrm{\beta }}{\to }$ $\stackrel{\mathrm{\gamma }}{\to }$ zXA , Z and A are :

• 69 , 172

• 172 , 69

• 180 , 70

• 182 , 68

17.

Which of the following is paramagnetic ?

• N2

• C2

• N2+

• O22-

18.

Intermolecular hydrogen bonding is strongest in :

• C2H5OH

• HF

• H2O

• CH3COCH3

19.

Non - directional orbital is :

• 4p

• 4d

• 4f

• 3s

20.

Which of the following gas is linear ?

• CO2

• SO2

• NO2

• SO3