Q. Which of the following processes is absent in glass manufacturing process ?

View solution

Q. Production of one ton of dry paper pulp requires about __________ tons of bamboo or wood.

View solution

Q. Nitrogen is an essential component of

View solution

Q. Bromine content in sea water may be around __________ ppm.

View solution

Q. Argon is the third largest constituent of air (followed by N₂ & O₂). Its percentage by volume in air is

View solution

Q. Poly tetraflouro ethylene (P.T.F.E.) is known as

View solution

Q. Bakelite is

View solution

Q. __________ is produced by the dehydrogenation of ethyl benzene.

View solution

Q. Which of the following is used as a coagulant in water treatment ?

View solution

Q. __________ paper is used in the manufacture of newsprint paper.

View solution

Q. Hydrodenation of vegetable oils is a/an __________ reaction.

View solution

Q. Permanent hardness of water is due to the presence of calcium & magnesium

View solution

Q. The temperature in the calcium carbide furnace is __________ °C.

View solution

Q. Vinyl chloride (CH₂ = CH.Cl) is produced by the thermal pyrolysis of ethylene dichloride at a pressure & temperature of

View solution

Q. Soaps remove dirt by

View solution

Q. Which of the following additives/water proofing agents is added to lower the hydrophilic (moisture loving) characteristic of cement ?

View solution

Q. Chemical name of soda ash is

View solution

Q. A substance produced by a living organism and capable of anti-microbial activity is called a/an

View solution

Q. Deaeration of water in its treatment is necessary, as it

View solution

Q. Hydrochloric acid is also known as

View solution