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Chemistry

Chemistry
A fertile soil is likely to have a pH of

14
3
43989
9

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Chemistry
How many electrons in a Hydrogen atom

Four
Two
One
Three

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Chemistry
Brown stains in vessels and clothes indicate the presence of high quantities of ________ in water

Manganese
None of these
Calcium
Magnesium

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Chemistry
The number of g-molecule of oxygen in 6.02 x 1024CO molecules is

1 gram of molecule
10 gram of molecule
5 gram of molecule
0.5 gram of molecule

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Chemistry
The antiparticle of an electron is

Proton
Positron
Beta particles
Alpha particles

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Chemistry
Candle is a mixture of

Bees wax and stearic acid
Paraffin was and stearic acid
Bees wax and paraffin wax
Higher fatty acids and stearic acid

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