For an amine RNH2, write an expression to indicate its basic strength. Ans. 2. Give one use of quaternary ammonium salts. Ans. Quaternary ammonium salts are widely used for manufacture of synthetic detergents. 3. Give one example of Hoffmann – Bromamide reaction Ans. In Hoffmann – Bromamide reaction an acid amide is reacted with Bromine in presence … Read more
1. Zinc, cadmium and mercury are not considered as transition metals. Why? Ans. Zinc, cadmium and mercury have fully filled configuration. Therefore they are not considered as transition metal. 2. Write the general configuration of d- block elements. Ans. General electronic configuration of d- block elements is. 3. What are the factors that decide the ionization potential? Ans.The … Read more
1. Write the elements of group 15? Ans. The elements of group 15 are Nitrogen (N), Phosphorous (P) , Arsenic (As) , Antimony (Sb) and Bismuth (Bi). 2. Write chemical name & formulae of a) Chile saltpetre b) Indian saltpetre Ans. (a) Chile saltpetre – Sodium nitrate – (b) Indian saltpetre – Potasium nitrate – 3. … Read more
1. Give IUPAC names of following compounds (i). (ii). (iii). (iv). (v). (vi). (vii). (viii). (ix). (x). Ans. (i). 1, 3- Dibromobutane (ii). 1- Cholopropan-2-ol(iii). 2, 3 – Dibromo-1-chloro-3-methylpentane(iv). 2-Choloro-3-ethyl-2-methyl pentane(v). 1-Chloro-2-phenylethane(vi). 1-Chloro-1-phenyl ethane(vii). 1, 2, 3, 4, 5, 6- hexachlorocyclohexane(viii). 2, 2- Dihexyl 1, 1, 1-Trichloro ethane(ix). 4, 4-dibromobiphenyl(x). 1, 3-Dibromo -3- methyl … Read more
