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Chemistry

Chemistry
Isobars are lines joining places having equal

Height above sea-level
Rainfall
Population
Pressure

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

Magnetite
Limnonite
Haemetite
None of these

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Chemistry
Which among the following metals provides amphoteric oxide ?

Aluminium
Sodium
Silver
Calcium

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Chemistry
Which one is not a primary greenhouse gases in the Earth's atmosphere

Methane
Ozone
Carbon dioxide
Nitrogen

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Chemistry
Tar roads get damaged if there is

No sloping
Heavy traffic
No maintenance
Stagnation of water on road

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Chemistry
Which one of the following contains maximum percentage of carbon ?

High speed steel
Wrought iron
Stainless steel
Cast iron

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