Solvent used for extraction of oil is_____________________?

A. Ethyl magnesium chloride
B. Methyl magnesium chloride
C. Dichlorophenol
D. Monochloroacetic acid

A. Manufacture of explosive
B. Conditioning and humidification of tobacco
C. Manufacture of pharmaceuticals
D. None of these

A. Bi-carbonates
B. Sulphates & chlorides
C. Carbonate
D. None of these

A. Neoprene
B. Cumene
C. Gelatin
D. Mercaptans

A. Nickel
B. Vanadium
C. Alumina
D. Iron

A. 15
B. 35
C. 55
D. 70