181. Chlorine acts as bleaching agent in the presence of?
(a) HCL
(b) NaOH
(b) H20
(d) HNO3
182. Permanent hardness of water is removed by adding?
(b) Soda lime
(a) Washing soda
(b) Caustic soda
(d) Baking soda
183. Most of the aquatic animals cannot survive in water above?
(b) 25C
c) 30C
(d) 35C
(a) 20C
184. The destiny of water maximum at?
(a)-40C
(b) 40C
(c) -4C
d) 4C
185. The disease which cause liver infection?
(a) Hepatitis
(b) Typhoid
(b) Cholera
(d) Dysentery
186. All are waterborne diseases EXCEPT?
(a) Hepatitis
(6) Typhoid
b) Malaria
(d) Dysentery
187. Water gas is mixture of?
(a) CO and H2
(b) CO and H20
(b) C and H2
(d) C and H20
188. All are created when sodium bicarbonate is cooked to create sodium carbonate, EXCEPT?
(a) CO
(b) CO2
(c) Na2CO3
(d) H20
189. Forth flotation process is concentration of are by?
(a) Magnetically
(b) Difference in density
(b) Wetting the ore
(d) Chemically
190. ARE THE RAW MATERIALS EXCEPTED FOR THE PRODUCTION OF SODA ASH?
(a) Ammonia
(b) Lime stone
(b) Brine
(d) Carbon monoxide
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