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Chemistry

Chemistry
The percentage of carbon in cost iron is :

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

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Chemistry
Charcoal is used in water treatment as a/an

Coagulant
Solvent
Absorbent
Adsorbent

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Chemistry
Except mercury which is the other metal that is liquid at standard conditions for temperature and pressure

Lead
Barium
Magnesium
Bromine

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Chemistry
In a Carbonyl group a carbon atom makes double bond with

Oxygen
Hydrogen
None of these
Carbon

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Chemistry
The compound that has the least value for octane number is :

2,2-dimethyl hexane
N-heptane
2-methyl heptane
Iso-octane

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Chemistry
Major gaseous pollutant of the thermal power station is

NO2
H2 S
NH3
SO2

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MORE MCQ ON Chemistry

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