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Chemistry

Chemistry
Which one element from below list is liquid at room temperature

Argon
Zinc
Bromine
Lead

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Chemistry
Who modified Bohr's theory by introducing elliptical orbits for electron path

Rutherford
Sommerfeld
Hund
Thomson

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

LD50
LC50
NOAEL
ADI

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Chemistry
Gunpowder consits of a mixture of

TNT and charcoal
Sand and TNT
Sulphur, sand and charcoal
Nitre, sulphur and charcoal

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Chemistry
A detergent is a

Drug
Soap
Catalyst
Cleansing agent

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Chemistry
Which one of the following is used to restore the colour of old oilpaintings ?

Sodium peroxide
Barium peroxide
Hydrogen peroxide
Ozone

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MORE MCQ ON Chemistry

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