Related Questions

The catalyst used in the manufacture of DDT (from chloral and chlorobenzene) is
A Dilute H2SO4
B Oleum
C Ultraviolet light
D None of these
The catalyst used in the manufacture of DDT is
A Alumina
B Silica
C 20% oleum
D Aluminium chloride
DDT should not be allowed to come in contact with iron (during its manufacture) to
A Avoid its decomposition
B Prevent sulphonation of the monochlorobenzene by the acid catalyst
C Achieve non-hygroscopic property
D None of these
If 15 men working independently and at the same rate can manufacture 27 baskets in an hour, how many baskets would 45 men working independently and at the same rate manufacture in 40 minutes?
A 27
B 35
C 40
D 54
If 15 men working at the same rate can manufacture 27 baskets in an hour, how many baskets would 45 men manufacture in 40 minutes?
A 27
B 54
C 35
D 40
DDT উৎপন্ন করতে নিচের কোনটি ব্যবহৃত হয়?
A গাঢ় HNO3 
B গাঢ় H2SO4 
C লঘু H2SO4 
D গাঢ় HCI+HNO3
ডিডিটি (DDT) তৈরিতে কোনটি ব্যবহৃত হয়?
A ক্লোরিন
B ক্লোরাল
C ক্লোরোফরম
D আয়োডোফরম
DDT অণুতে ক্লোরিন পরমানুর সংখ্যা কত?
A 2
B 3
C 4
D 5
Which book written by Rachel Carson resulted in banning DDT in USA?
A Silent spring
B The environmentalism
C Biomagnification
D Food chain
Dichloro diphenyl __________ is the full form of DDT (an insecticide).
A Tetrachloroethane
B Trichloroethane
C Tetrachloromethane
D Trichloromethane

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