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Latest Chemistry MCQs

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

– by 0

(a) Kerosene
(b) Lime
(c) oxalic acid solution
(d) Petrol

Lactic acid is present in?

– by 0

(a) Vinegar
(b) Grapes
(c) Sour milk
(d) Lemon juice

Which product is obtained in the manufacture of soap from oils?

– by 0

(a) Sodium chloride
(b) Sodium hydroxide
(c) Fats
(d) Glycerine

Red phosphorous does not react with?

– by 0

(a) Zinc
(b) Chlorine
(c) Alkali
(d) Nitric acid

The boiling point of water on the Kelvin scale

– by 0

(a) 270°K
(b) 373°K
(c) 100°K
(d) 212°K

When the pH of a solution is zero, then it is

– by 0

(a) Basic
(b) Water
(c) Neutral
(d) Strongly acidic

Bleaching powder is prepared by passing chlorine through?

– by 0

(a) Limestone
(b) Quicklime
(c) Milk of lime
(d) Dry slaked lime

One of the gases polluting air is

– by 0

(a) Sulphur dioxide
(b) Nitrogen
(c) Oxygen
(d) Hydrogen

The metal that occurs in free state is?

– by 0

(a) Iron
(b) Aluminium
(c) Sodium
(d) Gold

The pH of an acidic solution is?

– by 0

(a) Zero
(b) Neutral
(c) Less than 7
(d) Greater than 7

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