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Chemistry

Chemistry
The pH of human blood is between :

7.5-8
6.5-7
4.5-5
44052

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Chemistry
The chemical name of quartz is

Calcium oxide
Sodium silicate
Sodium phosphate
Calcium phosphate

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Chemistry
When ice cubes are made, the entropy of water

Increases
May either increase or decrease depending on the process used
Does not change
Decreases

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Chemistry
The percentage of Nitrogen in Air is

0.03
0.94
78.03
85.02

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Chemistry
The compound to which H2 does not add is

Tetra –9 – phenanthrylethylene
Tetra – a –naphthylethylene
Tetraphenyl ethylene
Biphenyl ethylene

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Chemistry
Neoprene is a polymer of

Isoprene
Isopentane
Chloroprene
Isobutane

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MORE MCQ ON Chemistry

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