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Chemistry

Chemistry
Methanoic and ethanoic acids can be distinguished by the action of

NaHCO3
Tollen's reagent
NaOH
SOCl2

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Chemistry
Wax used for making candle is chemically a mixture of

Aromatic hydrocarbons
Aliphatic hydrocarbons
Cyclic hydrocarbons
Aliphatic and aromatic hydrocarbons

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Chemistry
If lime water is kept in the air, it turns milky due to presence of :

Sulphurdioxide
Carbondioxide
Oxygen
Nitrogen

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Chemistry
The chemical name of 'Hypo' commonly used in photography is

Silver nitrate
Sodium nitrate
Sodium thiosulphate
Silver iodide

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Chemistry
Physico-chemical characteristics of water in water sources undergo changes due to

Aquatic macrophytes
Evapotranspiration
Effluents
Auatic fungi

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Chemistry
The weight of 6.023 × 1022 atoms of carbon is

120 gms
0.12 gms
12 gms
1.2 gms

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