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Chemistry

Chemistry
Commercial Vaseline is derived from

Plant gums
Wool wax
Petroleum
Coal tar

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Chemistry
Vulcanized rubber contains sulphur

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

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Chemistry
L.P.G. is mostly liquefied

Oxygen
Butane
Methane
Hydrogen

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Chemistry
At room temperature, the metal that remains liquid is:

Zinc
Mercury
Platinum
Lead

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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
The metal that is used as a catalyst in the hydrogenation of oils is

Pb
Ni
Cu
Pt

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MORE MCQ ON Chemistry

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