(a) Proteins is ( polymer, copolymer, monomer).
(b) The molecule of (NH3, ClF3, BCl3) does not deviate octet rule.
(c) The volume of the gas decreases (rapidly, slowly, regularly) with regular decrease of temperature.
(d) The anhydrous sodium carbonate can be used as a (an) (indicator, catalyst, primary standard)
(e) Faraday’s laws express the (qualitative, quantitative, volumetric) results of electrolysis.
(f) Oxidation number of sulphur in H2SO3 is ( +6,+4,-2) .
(g) Light is a source of (force, pressure, energy).
(a) What of chemical bond is formed between 3NH3 and H+ ion? Write down the electron dot-cross formula
of the ion formed.
(b) Define ‘ Relative density of a gas’. What is the relative density of nitrogen oxide? (O =16, N=14).
(c) Write the balanced equation in words and symbols for the preparation of aluminium oxide (alumina).
(d) Write down the reactions at the cathode and anode for the electrolysis of dilute sulphuric acid using
platinum electrodes.
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