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Chemistry

Chemistry
Concentration of a material which is lethal to 50% animal is called

LC50
NOAEL
ADI
LD50

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Chemistry
Permanent – hardness of water may be removed by addition of

Alum
Lime
Sodium carbonate
Potassium Permangante

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Chemistry
Which of the following is an antidiabatic drug?

Penicillin
Insulin
Chloroquine
Aspirin

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Chemistry
Chemically ‘Quick Silver is known as

Mercury
Silver
Aluminium
Copper

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Chemistry
Zinc sulphide is commonly used as

Fungicide
Herbicide
Deodorant
Rodenticide

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Chemistry
The working of a dry cell is based on

Combination reaction
Electrolysis
Spontaneous oxidation-reduction reaction
Decomposition reaction

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