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Chemistry

Chemistry
Which of the following is used to denature ethanol ?

Propyl alcohol
Methane
Methyl alcohol
Phenol

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Chemistry
Which one is the simplest aromatic hydrocarbon

Benzene
Chloride
Aspirin
Picric acid

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Chemistry
The gas that causes suffocation and death when coal or coke is burnt in a closed room is

Carbon monoxide
Ethane
Carbon di-oxide
Methane

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Chemistry
Among the following iron ores, the highest percentage of iron content is found in–

Limnonite
None of these
Magnetite
Haemetite

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Chemistry
The oxidation number of nickel in K4[Ni(CN)4] is

4
8
–4
Zero

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Chemistry
What is the mass percentage of oxygen in carbon dioxide (CO2)

0.305
0.658
0.727
0.509

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MORE MCQ ON Chemistry

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