1001. Which is the most efficient absorbent for SO3 out of the following ?
A. 20% oleum
B. 65% oleum
C. 78% H2SO4
D. 98% H2SO4
1002. Exothermic neutralisation reaction between caustic soda and dodecylbenzene sulfonic acid produces sodium dodecylbenzene sulphate, which is a/an?
D. Analgesic drug
1003. Which oil is preferred for paint manufacture ?
A. Drying oil
B. Non-drying oil
C. Semi-drying oil
D. Saturated oil
1004. Pick out the wrong statement pertaining to nitric acid ?
A. About 90% of nitric acid is manufactured by Ostwald’s process
B. It is a strong mono basic acid which reacts with almost all the metals except noble metals
C. Yellow color of impure nitric acid is because of dissolved oxides of nitrogen (mainly NO2)
D. Arc process of nitric acid manufacture is economical as compared to Ostwald’s process
1005. Which of the following, when pyrolysed, produces Perchloroethylene ?
A. Ethylene dichloride
C. Carbon tetrachloride
D. Chlorinated paraffin
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