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Chemistry

Chemistry
Which one of the following is found in Vinegar ?

Propionic acid
Butyric acid
Acetic acid
Formic acid

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Chemistry
Which one of the following elements is used in the manufacture of safety matches?

Silicon
Phosphorus
Sodium
Graphite

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Chemistry
Bakelite is a co-polymer of Phenol and

Benzaldehyde
Formaldehyde
Acetaldehyde
Cinnaldehyde

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Chemistry
The number of g-molecule of oxygen in 6.02 x 1024CO molecules is

5 gram of molecule
1 gram of molecule
0.5 gram of molecule
10 gram of molecule

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Chemistry
The purest form of water is

Rain water
Ground water
Distilled water
Tap water

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Chemistry
Percentage of lead in lead pencils is

31-66
80
40

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MORE MCQ ON Chemistry

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