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Chemistry

Chemistry
The example of oligosaccharide is

Ribose
Glucose
Sucrose
Cellulose

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Chemistry
Which of the following metals is used in Space Crafts to withstand high temperatures ?

Ni
Ti
Fe
Pb

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Chemistry
Which one of the following metals does not react with water to produce Hydrogen ?

Cadmium
Sodium
Potassium
Lithium

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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
Ozone layer of atmosphere absorbs:

Infra-red rays
Cosmic rays.
Ultraviolet rays
All radiations of Light

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Chemistry
Maximum permissible concentration of copper in drinking water in mg/L is

0.05
0.01
2
1

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