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Chemistry

Chemistry
Which among the following elements is found in maximum percentage in the human body ?

Carbon
Nitrozen
Hydrogen
Oxyzen

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Chemistry
Which one of the following was used as a chemical weapon in the first world war ?

Water gas
Hydrogen cyanide
Carbon monoxide
Mustard gas

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Chemistry
Which of the following will replace hydrogen from acids to form salts ?

P
Na
S
Ag

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Chemistry
Galvanised iron is made by coating iron with

Zinc
Sulphur
Nickel
Chromium

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Chemistry
Suspension particles have the size between

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

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Chemistry
Which one is heaviest naturally-occurring element of the periodic element

Iron
Uranium
Rhodium
Thorium

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MORE MCQ ON Chemistry

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