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Chemistry

Chemistry
Carbon monoxide is an inflammable gas. Which one of the following is also inflammable?

Nitrogen
Hydrogen
Helium
Oxygen

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Chemistry
Coating of solid waste with impervious material is known as

Chemical fixation
Encapsulation
Landfill
Capping

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Chemistry
The Refrigerant 'FREON' is

Hydrofluosilicic Acid
Difluoro Dichloro Methane
Fluorspar and Felspar
Calcium Tetra Fluoride

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Chemistry
The most commonly used chemicals in the artificial rainmaking or cloud seeding are

Sodium Chloride (NaCl)
Dry Ice (Frozen CO2)
All of these
Silver Iodide (Ag I)

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Chemistry
The inert gases are ____ in water

soluble
insoluble
sparingly soluble
None of these

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Chemistry
The heaviest naturally occurring element is:

Uranium
Polonium
Mercury
Thorium

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