The total number of reagents from those given below, that can convert nitrobenzene into aniline is_______(Integer answer)
I. Sn - HCl
II. Sn - `NH_(4)OH`
III. Fe - HCl
IV. Zn - HCl
V.`H_(2) - Pd`
VI. `H_(2)` - Raney Nickel

The number of reagents which convert aldehyde or ketones to alkanes in the following list are : NaBH_4 , NH_2 NH_2 KOH, HI, r e d P, H_2 Ni, Zn//Hg, HCl, LiAIH_4 , Pt, acidified KMnO_4 , alkaline KMnO_4

How many of the following converts carbonyl compounds into alkanes i) Alkaline hydrazine ii) Red P-H iii) Pt,\(H_{2}\) iv Wurtz reagent v) "Zn-Hg+HCl" vi) \(NaBH_{4}\)

Some of the following gases are soluble in water due to formation of their ions : I:CO_(2), II:NH_(3), III:HCL, IV:CH_(4), V:H_(2) Water insoluble gases can be:

Give the decreasing order of covalent character of the following compounds. a. I. GeCl_(2) II. GeCl_(4) III. SnCl_(2) IV. SnCl_(4) V. PbCl_(2) VI. PbCl_(4) b. I. CH_(4) II. NH_(3) III. H_(2)O IV. HF c. I. HF II. HCl III. HBr IV. HI d. I. AgI II. NaI III. CuI IV. NaCl

Total number of compound (s) or ions given below having - OUS suffix in their names are - H_(2)SO_(4),H_(2)SO_(3),HClO,HClO_(2),HClO_(3),Sn^(4+),Sn^(2+),Fe^(+2)