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Chemistry

Chemistry
The 'solid waste' is also known as

Scrubber
Sedge
Sludge
Toxic waste

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Chemistry
Which of the following gases is mixed with oxygen for breathing by divers in aqua lungs?

Hydrogen
Methane
Helium
Nitrogen

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Chemistry
Bone ash contains

Phosphoric sulphate
Calcium phosphate
Calcium sulphate
Calcium hypophosphate

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Chemistry
The names of the scientists, Newlands, Mendeleev, and Meyer are associated with the development of

metallurgy
periodic table of contents
discovery of elements
atomic structure

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Chemistry
The highest volume of gases in lower atmosphere is comprised of

Oxygen
Nitrogen
Hydrogen
Carbon dioxide

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Chemistry
The working of a dry cell is based on

Spontaneous oxidation-reduction reaction
Electrolysis
Combination reaction
Decomposition reaction

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MORE MCQ ON Chemistry

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