U-235
U-238
U-239
Pu-239
✅ The correct answer is option C.
Chemical Engineering MCQs
Both tritium and deuterium have the same number of
neutrons
electrons
protons
nucleons
✅ The correct answer is option A.
__________ is the most suitable fertiliser for paddy.
Urea
Ammonium sulphate
Superphosphate
Potassium nitrate
✅ The correct answer is option B.
Optimum reaction temperature in steam reforming of naphtha is __________ °C.
700 – 1000
300 – 450
1500-1700
100-200
✅ The correct answer is option A.
Plant tranquillisers
Hold back stem growth and halt plants at a desired height
Cause early maturation of plants
Accelerate ripening of food and grain
Produce seedless fruit
✅ The correct answer is option A.
Potassic fertilisers
Are useful during early stage of the plant growth
Stimulate early growth and accelerate seeding
Help in development of starches of potatoes and grain
None of these
✅ The correct answer is option C.
In the manufacture of orthophosphoric acid by strong H₂SO₄ leaching wet process, keeping the reactor temperature above 100°C, results in the formation of undesriable
CaSO₄ .½H₂O and CaSO₄ crystals
Pyrophosphoric acid
Metaphosphoric acid
All of the above
✅ The correct answer is option A.
A mixture of phosphate rock __________ is heated in an electric furnace to produce phosphorous.
Salt & coke
Sand & coke
And coke
And sand
✅ The correct answer is option B.
NPK means a __________ fertiliser.
Mixed
Potassic
Liquid
Solid
✅ The correct answer is option A.
Which of the following is not a commercially used feed-stock for the production of ammonia synthesis gas?
Water
Naphtha
Tar
Coal/coke oven gas
✅ The correct answer is option C.