A moderator is used in nuclear reactors in order to
1 Increase the number of neutrons
2 Decrease the number of neutrons
3 Slow down the speed of neutrons
4 Accelerate the neutrons
Which of the following is the lightest gas? 1 Nitrogen 2 Hydrogen 3 Ammonia 4 Carbon dioxide
what are the advantages and disadvantages of empirical knowledge?
Which are the important pulsating nebulae?
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What vendors does Ameber Recommed?
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Which scientists gave detailed information about nebula?
how longs & what conditions will a matter, say for example U, after an atomic explosion and was converted completely into energy will again condensed back into a matter named U'
Which are the units of functioning in vssc?
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What is the Nutrition ?
In an atomic nucleus, neutrons and protons are held together by 1 Gravitational forces 2 Magnetic forces 3 Exchange force 4 Coulombic forces