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Chemistry

Chemistry
Which of the following is not present in German-silver?

Silver
Nickel
Copper
Zinc

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Chemistry
Which of the following acts as promoter for iron in Haber's process

Mn
W
Mg
Mo

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Chemistry
The metal extracted from Bauxite is :

Silver
Aluminum
Manganese
Copper

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

Steel
Bronze
Copper
Brass

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Chemistry
Silicone is a polymer of

Dialkyl dichloro silane
Tetraalkyl silane
Silicon tetrachloride
Silane

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Chemistry
Percentage of lead in lead pencils is

31-66
40
80

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MORE MCQ ON Chemistry

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