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Chemistry

Chemistry
DDT and BHC may act as

Allergens
Asthematic agents
Carcinogens
None of these

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Chemistry
The substance that is added to make natural rubber strong and more bouncy is

Chlorine
Sponge
Polythene
Sulphur

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Chemistry
Nitrogen fixation is a process of

Assimilation of nitrate
Utilisation of nitrogen gas
Conversion of molecular nitrogen to ammonia
Conversion of organic nitrogen to proteins

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Chemistry
The most malleable metal is

gold
platinum
iron
silver

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Chemistry
The unit of ionic product of water (Kw) is :

Mol2 let-1
Mol2 let-2
Mol-1 let-1
Mol-1 let-2

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Chemistry
In an oxygen molecule, two atoms are united by

Four bonds
Three bonds
Two bonds
One bond

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MORE MCQ ON Chemistry

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