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Chemistry

Chemistry
Molality of pure water is

1.8
18
55.5
5.55

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Chemistry
Which is the purest form of iron?

Wrought iron
Pig iron
Cast iron
Steel

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Chemistry
Sour milk contains

Lactic acid
Citric acid
Acetic acid
Tartaric acid

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Chemistry
Ethanol containing 5% water is known as

Methylated alcohol
Power alcohol
Rectified spirit
Denatured spirit

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Chemistry
The most electropositive elements among the following is

Cs
Na
K
Ca

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Chemistry
Which of the following is not a precious/semi-precious stone?

Ruby
Emerald
Sapphire
Pearl

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