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Chemistry

Chemistry
The main constituent of biogas is

Acetic acid
Methane
Methyl alcohol
Oxygen

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Chemistry
Which of the following electrodes is used in strongly alkaline solution

Silver - silver chloride electrode
Mercury - mercuric oxide electrode
Mercury - mercurous sulphate electrode
Mercury - mercurous chloride electrode

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Chemistry
The advantage of detergents over soaps is

Detergents are soluble in water
Soaps give lather with only soft water
Detergents could not give much lather
Detergents give lather even with hard water

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Chemistry
The next higher homologue of C6H14 is

C7H14
C7H12
C6H12
C7H16

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Chemistry
Atoms having the same number of protons but different number of neutrons are called :

Cations
Anions
Isotopes
Higgs-boson

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Chemistry
The coloured discharge tubes for advertisement mainly contain

Neon
Helium
Argon
Xenon

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