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Chemistry

Chemistry
What is the covalency of nitrogen in ammonia molecule

5
3
4
2

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Chemistry
The material which can be deformed permanently by heat and pressure is called a

chemical compound
polymer
thermoset
thermoplastic

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Chemistry
Cement is made hard with

Polymerisation
Dissociation of water
Hydration and dissociation of water
Dehydration

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Chemistry
A non-electronic conductor is

None of these
Gas Carbon
Copper Sulphate
Iron

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Chemistry
Which of the following caused radioactive pollution along the coast of Kerala ?

Plutonium
Radium
Thorium
Zinc

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Chemistry
Which of the following has pH value 7?

Sodium Carbonate
HCl
H2SO4
Pure Water

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