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Chemistry

Chemistry
The polymer used in making plastic crockery is

Melamine
Decron
Bakelite
Nylon

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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

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

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Chemistry
CNG used in automobiles to check pollution, mainly consists of

CH4
N2
H2
CO2

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Chemistry
In ice, the number of hydrogen bonds per water molecule is

4
2
8
1

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Chemistry
Which of the following is used to remove rust stains on cloth?

Kerosene
Oxalic acid solution
Lime
Petrol

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Chemistry
The metal compound commonly found in Sindhoor or Kumkum is based on

Tin
Zinc
Lead
Copper

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