IAS 2002 — Chemistry

Match List-I (Oxidation number) with List II (The element) and select the correct answer using the codes given below the lists: | List-I (Oxidation number) | | List-II (The elements) A. | 2 | 1. | Oxidation number of Mn in MaO2 B. | 3 | 2. | Oxidation number of S in \(H_{2}S_{5}O_{7}\) C. | 4 | 3 | Oxidation number of Ca in CaO D. | 6 | 4. | Oxidation number of Al in NaA1H4 Codes: ABCD

Assertion (A): With the increase of temperature, the viscosity of glycerine increases. Reason (R): Rise of temperature increases kinetic energy of molecules.

Assertion: Synthetic detergents can lather well in hard water. Reason (R): Synthetic detergents form soluble calcium and magnesium salts with hard water.