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Chemistry

Chemistry
Which of the following is not a precious/semi-precious stone?

Sapphire
Emerald
Pearl
Ruby

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Chemistry
The chemical name of baking soda is

Sodium carbonate
Sodium chloride
Sodium bicarbonate
Sodium nitrate

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Chemistry
The new strain of bacteria produced by biotechnology in alcohol industry is

Bacillus subtilis
Escherichia coli
Saccharomyces cerevisiae
Pseudomonas putida

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Chemistry
German silver used for making utensils is an alloy of

Copper, zinc, aluminium
Copper, nickel, aluminium
Copper, silver, nickel
Copper, zinc, nickel

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Chemistry
Which amidst the following is not a gem stone ?

Opal
Cat's-eye
Topaz
Pearl

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Chemistry
An acid having basicity one is

Sodium phosphate
Sodium dihydrogen phosphate
Phosphoric acid
Disodium hydrogen phosphate

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MORE MCQ ON Chemistry

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