Assertion: Relative magnetic permeability has no units and no dimensions
Reason: μr=μ/μ0, where the symbols have their standard meaning
Assertion––––––––––– (A): The boiling point of HF is higher than that of H2O. Reason–––––––– (R): The hydrogen bond strength in HF is lower than that in H2O.
Assertion (A): Electrophilic substitution reactions takes place in phenol than in nitro benzene
Reason (R): Hydrogen bonding is present in phenol but not in nitrobenzene