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Chemistry

Chemistry
The “King of Metals” is :

Aluminium
Silver
Gold
Iron

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Chemistry
Which of the following electrodes is used in strongly alkaline solution

Mercury - mercuric oxide electrode
Mercury - mercurous chloride electrode
Silver - silver chloride electrode
Mercury - mercurous sulphate electrode

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Chemistry
Food cans are coated with tin and not with zinc because

Zinc is costlier than tin
Zinc is more reactive than tin
Zinc has a higher melting point than tin
Zinc is less reactive than tin

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Chemistry
Which of the following metals causes Itai-Itai disease ?

Chromium
Copper
Cobalt
Cadmium

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Chemistry
Solder is an alloy of

Copper, lead
Lead, zinc
Tin, lead
Sodium, lead

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Chemistry
Which of the following can be found as pollutants in the drinking water in some parts of India? Select the correct answer using the code given below.(A) Arsenic (B) Sorbitol (C) Fluoride (D) Formaldehyde (E) Uranium

A, B, C, D and E
A and C
B, D and E
A, C and E

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