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General Science

General Science
Deep blue colour is imparted to glass by the presence of

Iron oxide
Cupric oxide
Nickel oxide
Cobalt oxide

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General Science
Atoms of an element differ from those of all other elements in

Atomic number and electronic configuration.
Atomic number and number of valence electrons.
Number of neutrons and number of valence electrons.
Number of neutrons and electronic configuration.

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General Science
The wavelength of X-rays is of the order of

1 cm
10 micron
1 angstrom
1 m

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General Science
Paper is manufactured by

Wood and resin
Wood, calcium, hydrogen sulphide and resin.
Wood, sodium and bleaching powder
Wood and bleaching powder

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General Science
When an iron nail gets rusted, iron oxide is formed

Without any change in the weight of the nail
Without any change in colour or weight of the nail
With decrease in the weight of the nail
With increase in the weight of the nail

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General Science
What are the soaps?

Mixture of glycerol and alcohols
Sodium or potassium salts of heavier fatty acids
Salts of silicates
Esters of heavy fatty acids

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