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CHEMISTRY

Chemistry
What material is used to make electric heater coil ?

Iron
Silver
Nichrome
Copper

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Chemistry
Among the following, which is always found in free-state in nature?

Copper
Silver
Sodium
Gold

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Chemistry
Philosopher’s Wool is

Zinc sulphate
Zinc oxide
Zinc blende
Zinc carbonate

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Chemistry
Which of the following metals has least melting point ?

Silver
Copper
Mercury
Gold

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Chemistry
Which one is the most reactive gaseous element

Chlorine
Bromine
Iodine
Flourine

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