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


bCH3CH2Br


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


bSpin of an electron


cAngular momentum of an electron


dMagnetic momentum of an electron



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