A. Controlling timber degradation by ants
B. Controlling poultry lice
C. Potato beetle
D. Citrus fruits
Related Mcqs:
- Chemical formula of BHC, which is an insecticide is__________________?
A. C6H6Cl6
B. C6Cl6
C. C6H5Cl
D. C6H4Cl2 - Which of the following is not an insecticide ?
A. Hydrocyanic acid
B. Nicotine
C. Sodium fluoride
D. Hexane - Dichloro diphenyl ________________ is the full form of DDT (an insecticide) ?
A. Tetrachloroethane
B. Trichloroethane
C. Tetrachloromethane
D. Trichloromethane - ________________ acid is an unsaturated fatty acid ?
A. Palmitic
B. Oleic
C. Stearic
D. Oxalic - Low purity oxygen is used for____________________?
A. L.D. steel making
B. Cutting and welding of metals
C. Medicinal purposes
D. Chemical oxidation processes - Nitric acid is not used in the manufacture of______________________?
A. Detergents
B. Fertilisers
C. Aqua regia
D. Explosives - Which of the following is an unsaturated fatty acid ?
A. Lauric acid
B. Palmitic acid
C. Stearic acid
D. Oleic acid - Reaction of an alcohol with organic acid is called the ________________ reaction?
A. Saponification
B. Esterification
C. Neutralisation
D. Acidification - 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 - Sodium salt of higher molecular weight fatty acid is termed as the ______________________ soap?
A. Hard
B. Soft
C. Metallic
D. Lubricating
