Question
Which material is used as a moderator in a nuclear power
plant that slows down the neutrons and makes them fit for causing fission?Solution
In a nuclear power plant, materials such as graphite or heavy water (deuterium oxide, D₂O) are used as moderators. These materials slow down the neutrons, making them more likely to cause fission when they interact with nuclear fuel.
?2 - 12.5% of 647.99 = 24.98% × 363.97 + 5% of 1059.98
?% of (150.31 ÷ 14.97 × 50.011) = 319.98
What approximate value will replace the question mark (?) in the following?
? =...
A motor boat goes downstream from point A to B ,which is 36 km away from point A, and then returns to A. If actual speed of the boat in still water is 7...
- What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)
386.99 + 397.99 + ? - 232.02 = 35.02 × 31.99
2660.03 ÷ 94.98 x 59.9 = ? + 20.32

(80.95) (1/4) + (3.05) 3 - 119.78 × 2.15 + (14.98)2 = ?
- What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exactvalue.)