Which of these require crystallization most?
Drug making
Cement making
Paint making
Perfume making
Correct answer is A
Crystallization is required the most in industries where the purity of their products is important e.g in the manufacture of drugs and in sugar production. Options B,C and D do not undergo crystallization
The filter in the cigarette reduce the nicotine construct by
burning
adsorption
evaporation
absorption
Correct answer is B
The acetate and paper modify the particulate smoke phase by particle retention (filtration), and finely divided carbon modifies the gaseous phase (adsorption)
One of the methods used for combating air pollution is
burning of solid waste
provision of sanitary land fills
legislation against some industrial practices
scavenging of refuse dumps
Correct answer is C
No explanation has been provided for this answer.
Iron is often galvanized in order to
make it more malleable
remove the impurities in it
protect it against corrosion
render it passive
Correct answer is C
No explanation has been provided for this answer.
The energy value of petrol can be determined by a
bomb calorimeter
catalytic cracker
fractionating column
thermometer
Correct answer is C
No explanation has been provided for this answer.