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Chemistry

Chemistry
Which of the following gases is most toxic ?

Chlorine
Carbon dioxide
Sulphur dioxide
Carbon monoxide

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Chemistry
Which one of the following forms of phosphorus is most reactive?

Red phosphorus
Violet phosphorus
White phosphorus
Black phosphorus

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Chemistry
Sulphuric acid is

Monobasic
Dibasic
Tetrabasic
Tribasic

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Chemistry
The gas used in the manufacture of vanaspati from vegetable oil is

hydrogen
nitrogen
carbon dioxide
oxygen

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Chemistry
The number of neutrons present in an element having mass number 226 and atomic number 88 is :

88
50
138
314

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Chemistry
The elements in the modern Periodic table are arranged according to their

Neutron number
Mass number
Atomic number
Atomic Weight

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