CBSE
Multiple Choice QuestionsWhich of the following can be oxidised by SO2?
K2Cr2O7
Mg
H2O
All of these
Which one ofthe following nitrogen oxides does not contain N-N bonds?
N2O
N2O3
N2O4
N2O5
Assertion : Equivalent weight of NH, in the reaction, N, NH3 is 17/3 while that of N2 is 28/6.
Reason : Equivalent weight =
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false
Chlorine oxidises sodium thiosulphate to form
Na2SO3
Na2O
Na2SO4
Na2CO3
Assertion : Charcoal is used in separation of noble gases.
Reason : Charcoal has porous structure
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false
If both assertion and reason are false
Which one of the following is incorrect ?
Ionisation enthalpy of molecular oxygen is very close to that of Xe
Only type of interatomic interaction between particles of noble gases are weak dispersion forces
Hydrolysis of XeF6 is not a redox reaction
Xenon fluorides are not reactive
The function of Fe(OH)3 in the contact process is :
to remove arsenic impurity
to detect colloidal impurity
to detect colloidal impurity
to remove dust particles
Assertion : Hydrides of group-16 elements show volatility in the order :
H2O > H2S > H2Se > H2Te
Reason : Electronegativity of group-16 elements increases down the group from oxygen to tellurium
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion
If assertion is true but reason is false.
If both assertion and reason are false
Rhombic sulphur dissolves best in
CS2
H2O
ethanol
ether
Which can dissolve I2 ?
KI
NaI
LiI
HI
