3567. Pressure of CO2 gas (which is a coolant) in the Calder-Hall nuclear reactor is __________ kgf/cm2 .
0.2
7
35
50
✅ The correct answer is option B.
3572. Percentage of heavy water in ordinary water is around
0.015
7.54
0.71
32.97
✅ The correct answer is option A.
3579. What is the average life of a radioactive atom having a ‘half life period’ of T ?
1.44 T
0.144 T
14.4 T
2T
✅ The correct answer is option A.
3581. Uranium ore is mined & concentrated in India at
Jadugoda(Jharkhand)
Kota (Rajasthan)
Tuticorin (Tamilnadu)
Talchar (Orissa)
✅ The correct answer is option A.
3586. Fuel for a nuclear reactor (thermal) is
uranium
plutonium
radium
none of these
✅ The correct answer is option A.
3592. A control rod
should have small absorption cross-section.
is generally made of boron, hafnium or cadmium.
should have large absorption cross-section.
both (b) and (c).
✅ The correct answer is option D.
3560. Coolant used in a fast breeder reactor is
molten sodium
heavy water
ordinary water
helium
✅ The correct answer is option A.
3554. Caking index of a coal is a measure of its
Abradability
Reactivity
Agglutinating (binding) properties
Porosity
✅ The correct answer is option C.
3524. The calorific value of ‘LPG’ (50% propane + 50% butane) is about __________ kcal/Nm³.
5000
25, 000
10, 000
15, 000
✅ The correct answer is option B.
3528. ‘Wobbe index’ is a characteristic of
Solid fuels
Gaseous fuels
Liquid fuels
Fat coals
✅ The correct answer is option B.