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Chemistry

Chemistry
Percentage of lead in lead pencils is

31-66
40
80

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Chemistry
In its reaction with silver nitrate, C2H2 shows

Reducing property
Basic property
Acidic property
Oxidising property

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Chemistry
Which is the heaviest metal among the following?

Iron
Gold
Copper
Silver

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Chemistry
Muscle fatigue is caused by the accumulation of :

Uric acid
Oxalacetic acid
Lactic acid
Pyruvic acid

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Chemistry
Which of the following is the main compound of voter ink?

Silver nitrate
Ammonium Nitrate
Silver Chloride
Ammonium Chloride

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Chemistry
Which of the following is not a nucleon?

Proton
Electron
Neutron
Positron

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