Related InterviewSolutions

• Different steps involved in the manufacture of sulphuric acid in contact process are given below. Arrange them in the correct sequence Formation of oleum Oxidation of `SO_2` , Hydrolysis of oleum Combustion of sulphurA. d a c bB. a d b cC. d b a cD. a d c b
• Steps involved in the Frasch process are given below. Arrange them in the correct sequence , Three melts the sulphur below melting point The sulphur foam formed rises in the middle pipe and is collected. Surerheated steam under pressure is sent through the outermost pipe Hot compressed air is sent through the innermost pipe , which froth up the molten sulphur below Three concentric pipes are drilled through the ground to the sulphur depositsA. e c a d bB. e a d c bC. e a d b cD. e d a c b
• Arrange the different forms ofsulphur formed during heating fouowed by cooling Meu sulphur Flower of sulphur Rhombic sulphur sulphur vapoar Lambda sulphur Monoclinic sulphurA. e c f a d bB. c f e a d bC. c f a e d bD. c f e a b d
• The steps involved in the manufacture of glass are given below. Arrahge them in the correct sequence Moderate colling Addition of cullet Formation of respective silicates Preparation of fine powder of raw materials Heating of cullet at about 1600K to 1700KA. d b e c aB. d e b a cC. d e c b aD. d b c e a
• In an industry, `H_2S` gas is mixed with chlorine gas before releasing it into the atmosphere. Give the appropriate reason.
• Nitric acid attacks all the metals except noble metals but the nature of products of same metal along with corresponding nitrates depends upon the concentration of `HNO_3`. Explain.
• Why is the compound AgCl used in photo gray lenses
• `HNO_3` on reaction with phosphorus givesA. phosphorus acidB. phosphoric acidC. metaphosphoric acidD. hypophosphoric acid
• Hydrogen chloride gas can be subjected to drying only with conc. `H_2SO_4` but not with quick lime or phosphorus pentoxide. Explain
• Mention the chemical formulae of (i) Phosgene (ii) tear gas and (iii) chloroform