electron capture
β-emission
α-emission
positron emission
✅ The correct answer is option B.
Chemical Engineering MCQs
A fast breeder reactor
utilises fast neutrons for causing fission.
converts fertile material (e.g., U-238) into fissile material (Pu-239).
normally employs molten sodium as coolant.
all (a), (b) and (c).
✅ The correct answer is option D.
Nuclides having the same atomic numbers are termed as
isotopes
isomers
isotones
isobars
✅ The correct answer is option B.
Fusion point of a basic refractory material is
reduced by the addition of acid oxides.
increased by the addition of acid oxides.
not affected by the addition of acid oxides.
always less than 1000°C.
✅ The correct answer is option A.
The largest stable nucleus is
U-235
U-238
Pb-206
Bi-209
✅ The correct answer is option A.
The ratio of mass of a neutron to that of an electron is about 1839. What is the ratio of the mass of a proton to that of an electron?
159
1837
2537
10000
✅ The correct answer is option B.
The radioisotope used to study the thyroid gland is
iodine
cobalt
iron
carbon
✅ The correct answer is option A.
Pure carbon is completely burnt in oxygen. The flue gas analysis is 70%CO₂, 20%CO and 10%O₂. The percent excess oxygen used is
20
12.5
0
10
✅ The correct answer is option C.
One kg of carbon for theoretically complete combustion requires __________ kg of air.
11.5
0.5
23
12
✅ The correct answer is option A.
Anthracite can be used for
Recarbonising steel
Making carbon electrodes
Blending with highly coking coal to check its swelling which helps in saving coke even walls from damage and to produce high strength coke
All of the above
✅ The correct answer is option D.