Chemistry MCQs

Page No. 11

The law of traids is applicable to__________?


aLi, Be, B

✖


bF, Cl, Br

✖


cCl, Br, I

✓


dNa, K, Rb

✖


View Answer Cl, Br, I

Grignard reagent gives carboxylic acid with____________?


aCO2

✓


bCH3CHO

✖


cCOC2

✖


dHCN

✖


View Answer CO2

Hydrocarbon is formed when Grignard reagent is treated with___________?


aH2O

✓


bCH3OH

✖


cBoth A and B

✖


dNone of the above

✖


View Answer H2O

Which of the following haloalkane is hydrolysed by SN1 mechanism?


aCH3Br

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bCH3CH2Br

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cCH3CH2CH2Br

✖


d(CH3)3CBr

✓


View Answer (CH3)3CBr

The density of a gas is 1.964 g dm-3 at 273 K and 76 cm Hg. The gas is _________?


aCH4

✖


bCO2

✓


cC2H4

✖


dXe

✖


View Answer CO2

Pressure remain constant, at which temperature the volume of gas becomes twice of what it is at 0°C?


a546 °C

✖


b546 °K

✓


c200 °C

✖


d273 °K

✖


View Answer 546 °K

In a closed vessel, a gas is heated from 300K to 600 K. The kinetic energy becomes__________?


aDouble

✓


bSame

✖


cHalf

✖


dFour times

✖


View Answer Double

Which of the following gases shows more ideal behaviour at 0°C___________?


aH2

✖


bCH4

✖


cHe

✓


dNH3

✖


View Answer He

The energy of one mole of photons of radiation, whose frequency is 4×10 14 Hz, is ___________?


a159.6kJ

✓


b110.5kJ

✖


c135.5kJ

✖


d80.4kJ

✖


View Answer 159.6kJ

Azimuthal quantum number defines___________?


ae/m ratio of an electron

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bSpin of an electron

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cAngular momentum of an electron

✓


dMagnetic momentum of an electron

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