64 g of an organic compound contains 24 g of carbon, 8 g of hydrogen and the rest oxygen. The empirical formula of the compound is

• CH₂O

• C₂H₄O

• CH₄O

• C₂H₈O

Which of the following is an organo-metallic compound?

• Lithium ethoxide

• Ethyl lithium

• Lithium acetate

• Lithium carbide

H₂O₂ on oxidation gives

• O^2-

• OH^-

• O${}_2^{-}$

• O₂

The oxidation states of sulphur in the anions SO${}_3^{2-}$ , S₂O_{${}_4^{2-}$} and S₂O${}_6^{2-}$ follow the order

• ${\mathrm{S}}_2{\mathrm{O}}_4^{2-} < {\mathrm{SO}}_3^{2-} < {\mathrm{S}}_2{\mathrm{O}}_6^{2-}$

• ${\mathrm{SO}}_3^{2-} <{\mathrm{S}}_2{\mathrm{O}}_4^{2-} < {\mathrm{S}}_2{\mathrm{O}}_6^{2-}$

• ${\mathrm{S}}_2{\mathrm{O}}_4^{2-} < {\mathrm{S}}_2{\mathrm{O}}_6^{2-} < {\mathrm{SO}}_3^{2-}$

• ${\mathrm{S}}_2{\mathrm{O}}_6^{2-} < {\mathrm{S}}_2{\mathrm{O}}_4^{2-} <{\mathrm{SO}}_3^{2-}$

Very dilute nitric acid reacts with zinc to form zinc nitrate and

• ammonium nitrate

• NO₂

• NO

• N₂O

Acetic acid dissolved in benzene shows molecular weight

• 60

• 120

• 180

• 240

Volume of CO₃ obtained by the complete decomposition of 9.85 g BaCO₃ is

• 2.24 L

• 1.12 L

• 0.84 L

• 0.56 L

The molecular formula of bleaching powder is

• CaCl₂

• Ca₂OCl₂

• CaOCl₂

• CaCl₂.CaOCl

39.

A solution of sodium metal in liquid ammonia is a strong reducing agent due to the presence of

• sodium atoms

• sodium hydride

• sodium amide

• solvated electron

A mixture containing Cu²⁺ and Ni²⁺ can be separated for identification by

• passing H₂S in acid medium

• passing H₂S in alkaline medium

• passing H₂S in neutral medium

• passing H₂S in dry mixture