Chemistry MCQS with Answers for NTS
Cannizzaro reaction is not given by
Trimethyl acetaldehyde
Benzaldehyde
Acetaldehyde
Formaldehyde
The number of electrons in the M shell of the element with number 24 is
24
8
13
12
With increasing principle quantum number the energy difference between adjacent energy levels in H atom
Decreases
Remains constant
Decreases for low value of Z and increases for higher value of Z.
Increases
BiCI3 on hydrolysis forms a white precipitate of
Bismuth oxychloride
Bismuth hydroxid
Bismuth pentachloride
Bismuthio is acid
Water (H2O) is liquid while hydrogen sulphide (H2S) is a gas because
Water has higher molecular weight
Hydrogen sulphide is a weak acid
Sulphur has high electronegativity than oxygen
Water molecules associate through hydrogen bonding.
According to MO Theory the species O+2 possesses
Bond order of 2.5
Three unpaired electrons
Diamagnetic character
Stability lower then O2
The dimension of rate constant of a second order reaction involves
Time and square of concentration
Only time
Neither time nor concentration
Time and concentration
Bell metal is an alloy of
Cu and Sn
Cu,Zn,and Sn
Cu,Zn and Ni
Cu and Zn
The structure of XeF6
None of the above
Tetrahedral
Distorted octahedral
Pyramidal
The treatment of benzene with isobutene in the presence of sulphuric acid give
n-Butyl benzene
Tert-Butyl benzene
Isobutyl benzene
no reaction
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