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Chemistry

Chemistry
What is the covalency of nitrogen in ammonia molecule

2
4
3
5

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Chemistry
Photo-oxidation process is initiated by

Light
Heat
Catalyst
Oxygen

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Chemistry
The basic chemical building block of natural rubber obtained from trees is

Isoprene
Acetylene
Vinyl Chloride
Neoprene

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Chemistry
For a spontaneous chemical process, the free energy change is

Depends on whether the reaction is exothermic or endothermic
Negative
Zero
Positive

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Chemistry
Phosphorus is kept in water because

Its ignition temperature is very high
Its critical temperature is low
Its ignition temperature is very low
Its critical temperature is high

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Chemistry
Which of the following is chiefly present in LPG (Liquefied Petroleum Gas) ?

Methane
Butane
Ethane
Propane

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