1.

In the following questions a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices. a) Assertion and reason both are correct statements and reason is correct explanation for assertion. b) Assertion and reason both are correct statements but reason is not correct explanation for assertion. c) Assertion is correct statement but reason is wrong statement. d) Assertion is wrong statement but reason is correct statement.1.Assertion: The two strands of DNA are complementary to each other Reason: The hydrogen bonds are formed between specific pairs of bases. 2.Assertion: Ozone is thermodynamically stable with respect to oxygen. Reason:Decomposition of ozone into oxygen results in the liberation of heat 3.Assertion: Aquatic species are more comfortable in cold waters rather than in warm waters. Reason: Different gases have different KH values at the same temperature 4. Assertion: Nitric acid and water form maximum boiling azeotrope. Reason: Azeotropes are binary mixtures having the same composition in liquid and vapour phase. 5. Assertion: Carboxylic acids are more acidic than phenols.Reason: Phenols are ortho and para directing. 6.Assertion: Methoxy ethane reacts with HI to give ethanol and iodomethane Reason: Reaction of ether with HI follows SN2 mechanism

Answer»

1. a

2. d

3. b

4. b

5. b

6. a



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