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Chemistry

Chemistry
The number of electrons presents in H+ is

two
three
one
zero

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Chemistry
Green house effect is accelerated by

Deforestation
Rapid industrialization
Increased transportation activity
All of these

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Chemistry
Main source of lead pollution is from

Leaded gasoline
Sewage
Tobacco
Insecticides

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Chemistry
In the periodic table of elements, on moving from left to right across a period, the atomic radius

Remains unchanged
Does not follow a definite pattern
Decreases
Increases

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Chemistry
How many atoms of oxygen are in a glucose molecule

6
4
10
3

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Chemistry
Total number of halogen elements found in the periodic table is

8
13
3
5

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