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Chemistry

Chemistry
In galvanization, iron is coated with

Zinc
Copper
Tin
Nickel

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Chemistry
PH value between 6.5-7.5 makes the soil

Acidic
Basic
Neutral
None of these

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Chemistry
Suspension particles have the size between

10–2 – 10–4 cm
10–8 – 10–10cm
10–5 – 10–7cm
10–1 – 10–2 cm

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Chemistry
PH scale ranges from

8 – 14
0 – 7
None
0 – 14

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Chemistry
Ozone layer of atmosphere absorbs:

All radiations of Light
Ultraviolet rays
Cosmic rays.
Infra-red rays

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Chemistry
The main constituent of natural gas is

Propane
Butane
Ethane
Methane

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MORE MCQ ON Chemistry

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