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Chemistry

Chemistry
Which mineral is the ore of aluminium ?

Siderite
Bauxite
Magnetite
Haematite

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Chemistry
The purest form of Iron is :

Cast iron
Pig iron
Wrought iron
Steel

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Chemistry
In its reaction with silver nitrate, C2H2 shows

Acidic property
Reducing property
Basic property
Oxidising property

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Chemistry
Which one of the following is used as an anti-freeze for the automobile engines ?

Ethanol
Methanol
Ethylene glycol
Propyl alcohol

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Chemistry
The coloured discharge tubes for advertisement mainly contain

Helium
Xenon
Argon
Neon

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Chemistry
Nitrogen fixation is a process of

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

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