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Chemistry

Chemistry
The temperature of oxy-acetylene flame is around

3600°C
3200°C
2800°C
4000°C

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Chemistry
Which of the following is used to remove ink and rust stains on cloth?

Ether
Oxalic acid
Alcohol
Kerosene oil

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

Pb
Cu
Ni
Pt

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Chemistry
Which of the following is not soluble in water ?

Sodium sulphate
Lead Sulphate
Zinc sulphate
Potassium sulphate

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Chemistry
If the equilibrium constants for the systems H2 + I2 ? 2HI and 2HI ? H2 + I2 are K1 and K2 respectively, the relationship between K1 and K2 is :

K1 = 2K2
K1 = K2
K1 = K2/2
K 1 = 1 /K2

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Chemistry
Neoprene is prepared by polymerisation of which of the following

2-chloro-1, 3-butadiene
1,3-butadiene
Acrylonitrile
2-methyl 1, 3-butadiene

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