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Chemistry

Chemistry
Percentage of carbon in steel ranges from

1.5 to 3.0
0.1 to 1.5
3.0 to 4.0
4.0 to 6.0

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Chemistry
An alloy used in making heating elements for electric heating device is

Alloy Steel
Solder
Nichrome
German Silver

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Chemistry
Gold dissolves in

Aqua-regia
Nitric acid
Acetic acid
Hydrochloric acid

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Chemistry
The acid rain destroys vegetations because it contains

Ozone
Sulphuric acid
Carbon monoxide
Nitric acid

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Chemistry
How many neutrons does iron have

8
26
30
13

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Chemistry
The advantage of detergents over soaps is

Detergents give lather even with hard water
Detergents are soluble in water
Detergents could not give much lather
Soaps give lather with only soft water

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