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CHEMISTRY

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

Chlorine
Hydrogen sulphide
Carbon dioxide
Ammonia

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

Uric Acid
None of these
Urea
Ammonia

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Chemistry
The advantage of detergents over soaps is

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

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Chemistry
The tip of the match-stick contains

Phosphorus trichloride
Phosphorus pentoxide
Red phosphorus
White phosphorus

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Chemistry
Which of the following is a natural dye ?

Aniline blue
Phenolphthalein
Crystal violet
Alizarin

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