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Chemistry

Chemistry
Dry ice is the solid form of :

Nitrogen
Water
Air
Carbon di–oxide

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Chemistry
The number of waves in n x 10th Bohr's orbit are

n3
n
n2
n-2

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Chemistry
The fat of a common mussel-secretes a sticky glue that can be used to make heart implants. The unique chemical compound present in the glue is:

Dihydroxy phenyl alanine
Phenyl alanine
Hydroxy phenyl alanine
Amino phenyl alanine

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Chemistry
The gas used to dilute oxygen for breathing by deep sea divers is:

Neon
Argon
Helium
Nitrogen

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Chemistry
Cooking gas is a mixture of

Carbon dioxide and oxygen
Carbon monoxide and carbon dioxide
Methane and ethylene
Butane and propane

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Chemistry
The most malleable metal is

iron
platinum
silver
gold

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MORE MCQ ON Chemistry

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