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Chemistry

Chemistry
The percentage of carbon in cost iron is :

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

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Chemistry
Gunpowder consits of a mixture of

Sand and TNT
TNT and charcoal
Sulphur, sand and charcoal
Nitre, sulphur and charcoal

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Chemistry
Total number of elements in the Periodic table

115
127
118
112

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Chemistry
The chemical name of rat poison is

Potassium cyanide
Lead nitrate
Zinc oxide
Zinc phosphide

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Chemistry
If the sewage is fully oxidized, the nitrogen is in the form of

Nitrates
Ammonia
Nitramines
Nitrites

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Chemistry
Of the following commonly used materials, the one that is not an alloy is

Copper
Brass
Steel
Bronze

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MORE MCQ ON Chemistry

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