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Chemistry

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

LC50
ADI
NOAEL
LD50

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Chemistry
Which one of the following statement is correct ?Ozone is found in the earth's atmosphere mostly between

50 and 100 km
5 and 10 km
10 and 20 km
20 and 50 km

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Chemistry
Trinitrotoluene is

Used as an abrasive
Used to fuse two metals
Used as an explosive
Used to melt metals

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Chemistry
The antiseptic compound present in dettol is

Biothional
Iodine
Cresol
Enloroxylenol

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Chemistry
The inert gases are ____ in water

sparingly soluble
insoluble
None of these
soluble

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Chemistry
Gold dissolves in

Hydrochloric acid
Nitric acid
Acetic acid
Aqua-regia

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