Hexamethylene diamine and adipic acid
Hexamethylene diamine and maleic anhydride
Caprolactum
Dimethyl terephthalate and ethylene glycol
✅ The correct answer is option A.
Chemical Engineering MCQs
Le-Blanc process is a primitive process for the manufacture of
Caustic soda
Soda ash
Bromine from sea water
Hydrochloric acid
✅ The correct answer is option B.
DDT should not be allowed to come in contact with iron (during its manufacture) to
Avoid its decomposition
Prevent sulphonation of the monochlorobenzene by the acid catalyst
Achieve non-hygroscopic property
None of these
✅ The correct answer is option A.
Drinking (potable) water treatment does not involve
Coagulation
Sedimentation
Softening
Disinfection
✅ The correct answer is option C.
Essential oils are usually obtained using
Steam distillation
Extractive distillation
Solvent extraction
Leaching
✅ The correct answer is option D.
Enamels
Give good glossy finish
Are same as varnish
Are prepared from non-drying oil
Do not contain pigment
✅ The correct answer is option A.
__________ acid is the main constituent of cotton seed oil.
Acetic
Linoleic
Palmitic
Oleic
✅ The correct answer is option B.
Ethyl alcohol cannot be produced
From waste sulphite substrate of paper mills
By esterification and hydroloysis of ethylene
From molasses
None of these
✅ The correct answer is option D.
Pick out the true statement pertaining to water treatment.
Slow sand filters can remove colour completely
Activated carbon can be used for taste & odour control without subsequent filtration
Application of activated carbon reduces the temporary hardness of water
Normally, the turbidity is removed by adding a coagulent prior to sedimentation
✅ The correct answer is option D.
__________ nature of hypo (sodium thiosulphate) makes it useful in photography.
Oxidising
Reducing
Complex forming
Photochemical
✅ The correct answer is option C.