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The inert gas which is substituted for nitrogen in the air,
used by deep sea divers for breathing, is
1 Helium
2 Argon
3 Krypton
4 Xenon
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- Argon, I also Faced
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Long distance photography is facilitated by 1 Visible light 2 X-rays 3 Infrared rays 4 Ultraviolet rays
Which of the following metals is a better conductor of electricity? A. Silver B. Copper
The element required for solar energy conversion is 1 Beryllium 2 Silicon 3 Tantalum 4 Ultra pure carbon
Which of the following gases is used as an illuminant in lamps used by hawkers? 1 Methane 2 Ethylene 3 Acetylene 4 Hydgrogen
Which of the following minerals has the lower numerical hardness value? 1 Talc 2 Gypsum 3 Apatite 4 Topaz
Which of the following is a chemical change? 1 Oxidation 2 Reduction 3 Sublimation 4 Decomposition
what is the food constitution of ragi and rice
Epoxy resins are used as 1 Moth repellants 2 Insecticides 3 Detergents 4 Adhesives
Which of the following is used as a moderation in nuclear reactor? 1 Ordinary water 2 Radium 3 Thorium 4 Graphite
what are the advantages and disadvantages of rational knowledge?
When was the atomic energy regulatory board ( aerb ) constituted?
Superphosphate fertilizer is prepared by the reaction between 1 Calcium phosphate and Sulphuric hydroxide 2 Sodium phosphate and Sodium nitrate 3 Magnesium phosphate and Sodium nitrate 4 Sodium sulphate and Phosphoric acid
2 Answers Central Police Forces, Odisha Police,
Biological Sciences 
