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Chemistry

Chemistry
In electro-refining, the pure metal is deposited on

Anode
Cathode
Vessel
Electrolyte

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Chemistry
Most commonly used bleaching agent is

Chlorine
Sodium chloride
Carbon dioxide
Alcohol

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Chemistry
Which mineral is the ore of aluminium ?

Bauxite
Magnetite
Siderite
Haematite

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Chemistry
The element with highest first ionisation energy is

Helium
Hydrogen
Sodium
Lithium

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Chemistry
Iodine value is used to estimate

Alkali content in oil
Carboxylic groups in oil
Hydroxyl groups in oil
Unsaturation in oil

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Chemistry
The following are the half lives of four active isotopes. Which one of the following is the most dangerous to handle?

0.01 minute
100 years
3 billion years
13 days

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