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Chemistry

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

Polythene
Chlorine
Sponge
Sulphur

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Chemistry
The inert gases are ____ in water

sparingly soluble
insoluble
soluble
None of these

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Chemistry
Choose the incorrect statement pertaining to organic compounds

They contain mainly carbon and hydrogen
They are not easily combustible
They have low melting and boiling points
They do not dissolve in water

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Chemistry
Which among the following stage is suitable indicator when solution of sodium carbonate is mixed with sulphuric acid ?

Methyl red
Methyl orange
Phenolphthaline
Methylene blue

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Chemistry
Sea weeds are important source of

Chlorine
Iron
Bromine
Iodine

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Chemistry
Bauxite is an alloy of which of the following metals ?

Aluminium
Silver
Iron
Tin

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