Subject

Chemistry

Class

NEET Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

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


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


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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 2α β γ zXA , Z and A are :

  • 69 , 172

  • 172 , 69

  • 180 , 70

  • 182 , 68


17.

Which of the following is paramagnetic ?

  • N2

  • C2

  • N2+

  • O22-


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18.

Intermolecular hydrogen bonding is strongest in :

  • C2H5OH

  • HF

  • H2O

  • CH3COCH3


B.

HF

···Hδ+-Fδ-···Hδ+-Fδ-···

Strength of H · · · · · F > H · · · · · O


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19.

Non - directional orbital is :

  • 4p

  • 4d

  • 4f

  • 3s


20.

Which of the following gas is linear ?

  • CO2

  • SO2

  • NO2

  • SO3


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