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Chemistry

Chemistry
What are the number of moles of CO2 which contains 16 g of oxygen?

0.5 mole
0.25 mole
0.4 mole
0.2 mole

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Chemistry
Which one is the most dense liquid from the below

Gasolin
Choloform
None of these
Water

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Chemistry
Which substance is used to retard the setting action of cement?

CaSO4, 2H2O
Al2O3
Na2O + K2O
CaO

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Chemistry
The polymer obtained by the condensation of hexamethylene diamine and adipic acid is :

Terylene
Tollen's
Bakelite
Nylon 66

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Chemistry
The metal that is usually extracted from sea water is

Ca
Mg
K
Na

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Chemistry
The first metal used by a man was

Bronze
Copper
Silver
Brass

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MORE MCQ ON Chemistry

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