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Chemistry

Chemistry
Lead in water can cause

Eye disease
Arthritis
Hair falling
Kidney damage

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Chemistry
Vulcanized rubber contains sulphur

10-15%
7-9%
3-5%
0.02

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Chemistry
Pyrethrin used in mosquito coil is obtained from

An insect
A seed plant
A bacterium
A fungus

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Chemistry
In a period from Li to F, ionisation potential

Decreases
Increases
Cannot be predicted
Remains same

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Chemistry
Which of the following substance is highly plastic ?

Quartz
Granite
Clay
Mica

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Chemistry
Number of neutrons in an atom of hydrogen is

One
Zero
Three
Two

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