Assertion :Bohr proposed that angular momentum of electron in an orbit is quantized. Reason: Debroglie derived that :mur=nh2π
Assertion (A) Boiling points of alcohols and ethers are high. Reason (R) They can form intermolecular hydrogen-bonding. (a) Assertion and reason both are correct and reason is correct explanation of assertion. (b) Assertion and reason both are wrong statements. (c) Assertion is correct statement but reason is wrong statement. (d) Assertion is wrong statement but reason is correct statement. (e) Both assertion and reason are correct statements but reason is not correct explanation of assertion.
Assertion (A) o-nitrophenol is less soluble in water than the m- and p-isomers. Reason (R) m and p-nitrophenols exist as associated molecules. (a) Assertion and reason both are correct and reason is correct explanation of assertion. (b) Assertion and reason both are wrong statements. (c) Assertion is correct statement but reason is wrong statement. (d) Assertion is wrong statement but reason is correct statement. (e) Both assertion and reason are correct statements but reason is not correct explanation of assertion.
Assertion (A) Bond angle in ethers is slightly less than the tetrahedral angle. Reason (R) There is a repulsion between the two bulky (- R) groups. (a) Assertion and reason both are correct and reason is correct explanation of assertion. (b) Assertion and reason both are wrong statements. (c) Assertion is correct statement but reason is wrong statement. (d) Assertion is wrong statement but reason is correct statement. (e) Both assertion and reason are correct statements but reason is not correct explanation of assertion.
Assertion (A) Phenols give o-and p-nitrophenol on nitration with conc. HNO3 and H2SO4 mixture. Reason (R) - OH group in phenol is o-,p-directing. (a) Assertion and reason both are correct and reason is correct explanation of assertion. (b) Assertion and reason both are wrong statements. (c) Assertion is correct statement but reason is wrong statement. (d) Assertion is wrong statement but reason is correct statement. (e) Both assertion and reason are correct statements but reason is not correct explanation of assertion.