231. Synthetic glycerine is produced from
Toluene
Phenol
Propylene
Naphthalene
✅ The correct answer is option C.
Chemical Process MCQs
232. Ultimate analysis of coal determines its __________ content.
Carbon, hydrogen, nitrogen & sulphur
Carbon, ash, sulphur & nitrogen
Carbon, sulphur, volatile matter & ash
Carbon, volatile matter, ash & moisture
✅ The correct answer is option C.
233. Pick out the wrong statement. Iodine value of an oil or fat is
The number of grams of iodine taken up by 100 gm of oil or fat
A measure of its unsaturation
Helpful in findings its adulteration & its suitability for making soap
Independent of the type of oil, whether it is drying or non-drying
✅ The correct answer is option D.
234. Conversion of CO to CO₂ by steam in presence of a catalyst is called
Steam reforming
Shift conversion
Steam gasification
None of these
✅ The correct answer is option B.
235. Nitric acid is not used in the manufacture of
Detergents
Fertilisers
Aqua regia
Explosives
✅ The correct answer is option A.
236. Commercial production of calcium carbide requires limestone and __________ as raw materials.
Coke
Sand
Soda ash
Fuel oil
✅ The correct answer is option B.
237. Wood charcoal is used for decolouration of sugar, because it __________ the coloured materials.
Adsorbs
Oxidises
Reduces
Converts
✅ The correct answer is option A.
238. The main aim behind cooling the digested chip at the bottom portion of the digestor by injecting cold black liquor is to
Avoid mechanical weakening of fibre
Remove lignin by way of crystallisation
Increase the cellulose content
None of these
✅ The correct answer is option A.
239. Refractory bricks burnt at very high temperature have got
Greater resistance to corrosion by slags
Less resistance to corrosion by slags
High spalling tendency
None of these
✅ The correct answer is option A.
240. Commonly used glass is known as the __________ glass.
Flint
Hard
Pyrex
Soda
✅ The correct answer is option D.