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Chemistry

Chemistry
Highly toxic gas which causes headache, visual difficulty, paralysis and even death is

CO2
All of these
O3
CO

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Chemistry
Select the one which is not a mixture :

Distilled water
LPG
Gasoline
Air

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Chemistry
Poison used for killing rats is

Zinc phosphide (Zn3P2)
Calcium phosphide (Ca3P2)
Magnesium phosphide (Mg3P2)
Magnesium nitride (Mg3N2)

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Chemistry
The gas liberated in the Bhopal gas tragedy was:

Acetylene
Pheynl isocynate
Ethylene
Methyl isocynate

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Chemistry
The common refrigerant in domestic refrigerator is

Nitrogen
Freon
Neon
Oxygen

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Chemistry
In arc welding, Argon is used because of its

High calorific value
High flammability
Low reactivity with metal
Ability to lower the melting point of the metal

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MORE MCQ ON Chemistry

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