Question

In the following questions (Q. No. 12 - 16) 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.

12. Assertion: N2 is less reactive than P4

Reason : Nitrogen has more electron gain enthalpy than phosphorus.

13. Assertion: HNO3 makes iron passive.

Reason : HNO3 forms a protective layer of ferric nitrate on the surface of iron.

14. Assertion : N-Ethylbenzene sulphonamide is soluble in alkali.

Reason : Hydrogen attached to nitrogen in sulphonamide is strongly acidic.

15. Assertion : Only a small amount of HCl is required in the reduction of nitro compounds with iron scrap

and HCl in the presence of steam.

Reason : FeCl2 formed gets hydrolysed to release HCl during the reaction.

16. Assertion : Acetanilide is less basic than aniline.

Reason : Acetylation of aniline results in decrease of electron density on nitrogen.​

Answer 1

The layer of soil which is just below the top-soil is called B-horizon. It is also known as sub-soil. The sub-soil is made up of slightly bigger rock particles than that of top-soil. ... The sub-soil has very little humus (decayed organic matter).