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Chemistry

Chemistry
An electric iron has a heating element made of :

Tungsten
Copper
Nichrome
Zinc

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Chemistry
Basicity of boric acid, H3BO3 is

4
5
2
3

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Chemistry
The buffer action of blood is due to the presence of

CI– and [CO3]2–
HCI and NaCI
CI– and [HCO3]–
[HCO3]– and H2CO3

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Chemistry
24 carat of diamond is equal to

95% mg
200 g
91% gold
200 mg

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Chemistry
Which of the following molecules has a bond order of 2.5

NO
CO
F2
HCL

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Chemistry
Neoprene is prepared by polymerisation of which of the following

2-methyl 1, 3-butadiene
Acrylonitrile
2-chloro-1, 3-butadiene
1,3-butadiene

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