Chapter 16: Problem 204
The number of hydrogen atom(s) attached to phosphorous atom in hypophosphorous acid is \(\quad\) (a) zero (b) two (c) one (d) three
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Match the following: List I (Compound) 1\. \(\mathrm{XeF}_{2}\) 2\. \(\mathrm{XeF}_{4}\) 3\. XeF 4\. \(\mathrm{XeO}_{3}\) List II (Number of lone pair electron) (i) 0 (ii) 1 (iii) 2 (iv) 3
Concentrated hydrochloric acid when kept in open air sometimes produces a cloud of white fumes. The explanation for this is that (a) strong affinity of HCl gas for moisture in air results in forming of droplets of liquid solution which appears like a cloudy smoke. (b) oxygen in air reacts with the emitted HCl gas to form a cloud of chlorine gas (c) due to strong affinity for water, concen-trated hydrochloric acid pulls moisture of air towards itself. This moisture forms droplets of water and hence the cloud. (d) concentrated hydrochloric acid emits strongly smelling HCl gas all the time.
Match the following: List I (Manufacturing process) 1\. Deacon's process for chlorine 2\. Hydrogenation of vegetable oils 3\. Ostwald's process for nitric acid 4\. Haber's process for ammonia The correct matching is List II (Catalyst used) (i) finely divided iron with molybdenum as promoter (ii) copper(II)chloride (iii) finely divided nickel powder (iv) platinum gauze 1 3 4 (a) (iv) (iii) (ii) (b) (i) (iv) (ii) (iii) (c) (ii) (iii) (i) (iv) (d) (ii) (iii) (iv) (i)
A liquid \(\mathrm{A}\) is treated with \(\mathrm{Na}_{2} \mathrm{CO}_{3}\) solution. A mixture of two salts \(\mathrm{B}\) and \(\mathrm{C}\) are produced in the solution. The mixture on acidification with sulphuric acid and distillation produces the liquid \(\mathrm{A}\) again. Identify A. (a) \(\mathrm{Cl}_{2}\) (b) \(\mathrm{O}_{2}\) (c) \(\mathrm{Br}_{2}\) (d) \(\mathrm{N}_{2}^{2}\)
Match the following: List I List II 1\. \(\mathrm{XeF}_{4}\) (i) distorted octahedral 2\. \(\mathrm{XeF}_{6}\) (ii) tetrahedral 3\. \(\mathrm{XeO}_{3}\) (iii) square planar 4\. \(\mathrm{XeO}_{4}\) (iv) pyramidal The correct matching is 1 2 3 4 (a) (iii) (i) (iv) (ii) (b) (ii) (i) (iii) (iv) (c) (i) (iii) (ii) (iv) (d) (iii) (iv) (i) (ii)
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