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Chemistry

Chemistry
How many electrons in a Hydrogen atom

Two
One
Four
Three

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Chemistry
Plastic is a type of

Acrylic
Polymer
Polyester
None of these

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Chemistry
The strongest oxidizing agent among the following is:

Oxygen
Chlorine
Iodine
Fluorine

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Chemistry
The material used in the manufacture of lead pencil is

Mica
Graphite
Carbon
Lead

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Chemistry
Hard steel contains

2 to 5 per cent carbon
0.1 to 0.4 per cent carbon
0.01 to 0.04 per cent carbon
0.5 to 1.5 per cent carbon

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Chemistry
Milk tastes sour when kept in the open for sometime due to the formation of

Acetic acid
Carbonic acid
Citric acid
Lactic acid

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