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Chemistry

Chemistry
When formaldehyde and potassium hydroxide are heated, we get

Acetylene
Methyl alcohol
Methane
Ethyl formate

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Chemistry
The most abundant metal in the Earth’s crust is

Zinc
Iron
Aluminium
Copper

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Chemistry
The heat value of combustion of Gasoline is

14600 kJ/kg
12600 kJ/kg
47000 kJ/kg
39400 kJ/kg

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Chemistry
Catalyst is a substance which

Increases the rate of the reaction
None of these
Has no action on the rate of the reaction
Decreases the rate of reaction

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Chemistry
Synthetic detergents are made from

Sodium stearate
Sodium palmitate
Sodium salt of benzene carboxylic acid
Sodium salt of benzene sulphonic acid

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Chemistry
Which of the following is chiefly present in LPG (Liquefied Petroleum Gas) ?

Methane
Ethane
Butane
Propane

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