A. Not a fumigant
B. BHC (Benzene Hexachloride) containing 99% γ-isomer
C. A by-product of BHC manufacture
D. Both B. and C.
Related Mcqs:
- Chemical formula of ‘salt cake’ is____________________?
A. Na2SO4
B. CaSO4
C. MgSO4
D. BaSO4 - Hydrophilic group of a soap or detergent solution is____________________?
A. Water hating
B. Soil loving
C. Water loving
D. None of these - Process conditions in fermentator used for production of penicillin is____________________?
A. 25°C, 2 atm
B. 50°C, l0 atm
C. 30°C, 200 mm Hg (absolute)
D. 90°C, 45 atm - The drug used in contraceptives is____________________?
A. Sulfadiazine
B. Mestranol
C. Methyl salicylate
D. Penicillin - The major use of butadiene is____________________?
A. As a plasticiser for unsaturated polyester
B. In the manufacture of synthetic rubber
C. As an anti-skinning agent in paint
D. None of these - Main constituent of limestone is____________________?
A. CaCO3
B. MgCO3
C. Na2CO3
D. CaSO4 - The difference between saponification value and acid value is____________________?
A. Called ester value
B. Always negative
C. Constant for all fatty oils
D. None of these - Main constituents of natural rubber is____________________?
A. Polystyrene
B. Polyisoprene
C. Polybutadiene
D. Polychlorophrene - Polyvinyl chloride (PVC) is____________________?
A. A thermosetting material
B. A condensation polymerisation product
C. Made by employing emulsion polymerisation
D. None of these - In the production of soda ash by Solvay process, the by-product is____________________?
A. CaCl2
B. NH4Cl
C. NH3
D. NaOH
