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Chemistry

Chemistry
The percentage of carbon in cost iron is :

0.01 to 0.25
0.5 to 1.5
6 to 8
3 to 5

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Chemistry
The gas used for artificial ripening of green fruit is

carbon dioxide
acetylene
ethane
ethylene

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Chemistry
________ is used for making vinegar.

Oxalic acid
Malic acid
Tartaric acid
Acetic acid

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Chemistry
The inert gases are ____ in water

None of these
insoluble
soluble
sparingly soluble

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Chemistry
Which one of the following is also known as solution ?

A suspension
A compound
A heterogeneous mixture
A homogeneous mixture

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Chemistry
Which of the following is not a method of preparing oxygen?

Decomposition of manganese dioxide
Fractional distillation of liquid air
Electrolysis of water
Decomposition of potassium permanganate

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