Assertion : 1, 2-dichloroethane is optically active.
Reason : Meso compound is optically active.
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.
Assertion : Phenol is more reactive than benzene towards electrophilic substitution reaction.
Reason : In the case of phenol, the intermediate carbocation is more resonance stabilised.
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 of the following is the correct statement for PH3?
It is less poisonous than NH3.
It is less basic than NH3.
Electronegativity of PH3 >NH3.
It does not show reducing properties.
B.
It is less basic than NH3.
Nitrogen is more electronegative and smaller in size than phosphorus. Therefore, the lone pair is concentrated on a small region and has maximum electron density. So, NH3 is more basic than PH3.