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CHEMISTRY

Chemistry
Tear gas used by the police to disperse the mob contains

Ammonia
Chlorine
Carbon dioxide
Hydrogen sulphide

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Chemistry
Which of the following is also used as a Bio fertilizer?

None of these
Uric Acid
Ammonia
Urea

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Chemistry
The advantage of detergents over soaps is

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

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Chemistry
The tip of the match-stick contains

Phosphorus pentoxide
Red phosphorus
Phosphorus trichloride
White phosphorus

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Chemistry
Which of the following is a natural dye ?

Phenolphthalein
Crystal violet
Alizarin
Aniline blue

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