CBSE
Multiple Choice QuestionsAssertion : Heat of neutralisation for both H2SO4 and HCl with NaOH is 53.7 kJ mol-1.
Reason : Both HCl and H2SO4 are strong acids.
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.
The strongest Bronsted base is :
HCl
HClO-
HCl
HClO4
Which one act as Bronsted acid as well as Bronsted base?
Cl-
OH-
HCl
H2O
Assertion : H3BO3 is a weak acid.
Reason : Water extracts the proton of H3BO3.
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.
The characteristic ion of an acid in an aqueous solution is :
H+
H3O+
H4O+
BF3 molecule is :
Lewis base
Lewis acid
Neutral
None of these
If the pH of HCl soltion is 2 then the molar concentration of this will be :
0.01 M
2 M
0.4 M
0.02 M
NO2 + O2 NO3 .......K1
2NO2 + O2 2NO3 ........K2
For the above reaction the relation between equilibrium constant is :
K2 = (K1)2
K2 =
K2 =
K1 = K2
The ionisation percentage of 0.2 M HCN the solution is 0.02%. What will be the value of ionisation constant ?
8 x 10-5
8 x 10-9
8 x 10-7
8 x 10-3
The true statement for the acids of phosphorus, H3PO2 H3PO3 and H3PO4 is
the order of their acidity is H3PO4 > H3PO3 > H3PO2
all of them are reducing in nature
all of them are tribasic acids
the geometry of phosphorus is tetrahedral in all the three.
