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Chemistry

Chemistry
Taj Mahal is greatly affected due to :

Sound pollution
Acid rain
Tourists
Deforestation

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Chemistry
The material used in the manufacture of lead pencil is

Lead
Carbon
Mica
Graphite

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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
The mass of P4O10 that will be obtained from the reaction of 1.33 gram of P4 and 5.07 of oxygen is

5.05 gram
2.05 gram
4.05 gram
3.05 gram

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Chemistry
Which one of the following does not form oxyacid ?

Chlorine
Sulphur
Fluorine
Nitrogen

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Chemistry
Poison used for killing rats is

Magnesium phosphide (Mg3P2)
Zinc phosphide (Zn3P2)
Magnesium nitride (Mg3N2)
Calcium phosphide (Ca3P2)

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