chem process (sec 10-14) Flashcards
A unit operation is exemplified by the process of
desorption
The major constituents of glass are
sand, lime and soda ash
Margarine is a/an
fat
Oils and fats are converted to soap in a process called
saponification
Glycerine can be obtained from
fat
Blue vitriol is chemically
copper sulphate
Trinitro-toluene (TNT) is
an explosive.
Thorium is mainly used
for the manufacture of gas mantles.
During the absorption of HCl gas in water (to produce liquid HCl), the gas is kept above dew point to
avoid corrosion.
Good quality of edible salt is obtained from brine by the process of
vacuum evaporation
Electric bulbs are made of __________ glass.
flint
Which of the following is used as a binding material in soap to improve soap texture ?
Borax
An alkali metal salt of palmitic acid is known as
metallic soap
Washing soda is chemically represented by
Na2CO3.10H2O
Magnesium and calcium __________ cause temporary hardness of water.
bicarbonates
Which form of sulphur is the most stable at room temperature ?
Rhombic
Vegetable oils and fats basically differ in their
physical state
Average sulphur content in Indian pyrites is about __________ percent.
35
Oil is a/an
mixture of glycerides of fatty acids.
Which of the following is a constituent of coffee ?
Caffeine
Which of the following is the main constituent of the mother liquor produced in salt industry ?
Bromine
Silicon carbide is a/an
adhesive
Oxygen is produced by fractionation of air using __________ process.
either (a) or (b)
Linde’s
Claude’s
Trinitrotoluene (TNT), an explosive, is made by the nitration of
toluene