Which of the following is used as a coolant in nuclear reactors?
1 Heavy water
2 Cadmium
3 Liquid sodium
4 None of these
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Which of the following is used as a lubricant? 1 Graphite 2 Silica 3 Diamond 4 Iron oxide
Which of the following reactions is used for increasing the number of carbon atoms in a chain? 1 Substitution reaction 2 Wurtz reaction 3 Friedel – Crafts reaction 4 Cannizzaro’s reaction
Dear Sir I have got through cable size calculation 10 sq mm cable size of one panel, how i be sure that used cable is 10sqmm. a) By measuring each strand of cpper & multilpy by pye and so on...... or By measuring any one cable core with insulation only.
Monazite is an ore of 1 Iron 2 Titanium 3 Thorium 4 Zirconium
How many astronauts travelled in the challenger?
Which gas is used for preparation of soda water? 1 Ammonia 2 carbon dioxide 3 Hydrogen 4 Nitric oxide
When did the most luminous nova appear?
Which is the most famous comet?
The Indian variety of which of the following plant has been proved to be the greatest pollution fighter in India: 1) Tea 2) Jute 3) Mustard 4) Groundnut
The final products of combustion of ethane are 1 Carbon and oxygen 2 Ethylene and Hydrogen 3 Water and Carbon monoxide 4 Carbon dioxide and water
Rayon is chemically 1 Glucose 2 Amylase 3 Cellulose 4 Pectin
if appointed at aryabhatt school for how long should we expect you work with us