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Chemistry

Chemistry
Plastic is a type of

Polyester
Acrylic
Polymer
None of these

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

Sodium
Gold
Silver
Copper

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Chemistry
Which of the following is an iron ore ?

Magnetite
Bauxite
Lignite
Nitrite

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Chemistry
PH scale ranges from

None
0 – 14
8 – 14
0 – 7

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Chemistry
When a bond is formed between two atoms, the energy of the system will

May increase or decrease
Remain the same
Increase
Decrease

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Chemistry
Bauxite is used as raw material by which industry ?

Gold
Steel
Aluminium
Iron

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