NCERT Class 11 Chemistry very short Questions & Answers

NCERT Class 11 Chemistry very short Questions & Answers NCERT Class 11 Chemistry QUESTIONS

NCERT Class 11 Chemistry very short Questions & Answers

31 In vulcanisation, natural rubber is heated with
A Sulphur
B Phosphorus
C carbon
D Silicon

Answer: Sulphur
32 What are soaps?
A Sodium, salts of heavier fatty acids
B Mixture of glycerol and alcohols
C Esters of heavy fatty acids
D Salts of silicates

Answer: Sodium, salts of heavier fatty acids
33 Which one of the following is an element ?
A Diamond
B Sapphire
C Topaz
D Ruby

Answer: Diamond
34 Which one of the following is correct ? Butter is
A A super cooled oil
B an emulsion
C a molecular solid
D none of these

Answer: an emulsion
35 Quick silver is another name for
A Mercury
B Copper
C Silver
D Aluminium

Answer: Mercury
36 Which one of the following contains maximum percentage of nitrogen by mass?
A Ammonium nitrate
B Ammonium carbonate
C Urea
D Ammonium cyanide

Answer: Urea
37 The National Chemical Laboratory(India) is located in
A Pune
B Hyderabad
C Bengaluru
D Mumbai

Answer: Pune
38 Camphor can easily be purified by the process of
A Sedimentation
B Sublimation
C Distillation
D Crystallization

Answer: Sublimation
39 Another name for mercurous chloride is
A Plaster of paris
B Blue vitriol
C Amalgam
D Calomel

Answer: Plaster of paris
40 Which metal is commonly used for making an electromagnet?
A Iron
B Nickel
C Cobalt
D Copper

Answer: Iron

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