Q. Direct conversion of chemical energy into electrical energy is done in a

View solution

Q. Which of the following is not produced commercially from sea water ?

View solution

Q. Pick out the wrong statement.

View solution

Q. Salt is the basic raw material for the manufacture of

View solution

Q. Pick out the wrong statement.

View solution

Q. Hydrazine (N₂H₄) is used mainly as a/an

View solution

Q. Hydrocynic acid (HCN) is used as an insecticide for

View solution

Q. Molecular weight of plastics ranges from

View solution

Q. Air used in aerobic fermentation must be sterilized, otherwise the

View solution

Q. Alkylbenzene sulfonate (ABS) is a

View solution

Q. Alcohol content in freshly prepared natural and fortified wine may be respectively around __________ percent.

View solution

Q. Setting of plaster of paris is accompanied with

View solution

Q. Commercial production of calcium carbide requires limestone and __________ as raw materials.

View solution

Q. Which one of the following is not likely to be a constituent of vegetable oils ?

View solution

Q. Nitroglycerene absorbed in wood flour, sodium nitrate or ammonium nitrate is commercially used as a controlled explosive called dynamite. The raw material used for its manufacture are glycerene, nitric acid and

View solution

Q. Detergent is produced by the sulphonation of dodecyl benzene, which is an __________ reaction.

View solution

Q. For the hydrogenation of oils __________ (A) __________ is commonly used as catalyst and __________ (B) __________ is a catalyst poison.

View solution

Q. Main constituents of natural rubber is

View solution

Q. Highly porous refractory bricks are

View solution

Q. Fumigant insecticides

View solution