NCERT Class 11 Chemistry Optional Questions with Answers

NCERT Class 11 Chemistry Multiple Choice Questions(MCQs) & Answers NCERT Class 11 Chemistry QUESTIONS

NCERT Class 11 Chemistry Optional Questions with Answers

41 Acetyl salicylic acid is commonly used as
A A fertilizer
B A sedative
C A pain killer
D Tear gas

Answer: A pain killer
42 Ruby is an oxide of
A aluminium
B platinum
C gold
D silver

Answer: aluminium
43 Broken glass that is used in the manufacture of glass is called
A Cullet
B Waste glass
C Raw material
D Batch

Answer: Waste glass
44 Which one of the following is a protein fibre?
A Silk
B Cotton
C Nylon
D Polyester

Answer: Silk
45 Who was the father of chemistry?
A Cavendish
B Urey
C Robert Boyle
D Lister

Answer: Cavendish
46 What is the most common element in the universe?
A Hydrogen
B Helium
C Oxygen
D Iron

Answer: Hydrogen
47 When quick lime is added to water
A Heat is liberated
B Temperature decreases
C Heat is absorbed
D No heat change takes place

Answer: Heat is liberated
48 The iron layered with zinc is called
A Galvanised iron
B Steel
C Pig iron
D Cost iron

Answer: Galvanised iron
49 Aluminium oxide is a/an
A amphoteric acid
B neutral acid
C acidic oxide
D basic oxide

Answer: amphoteric acid
50 Cooking oil can be converted into vegetable ghee by the process of
A Distillation
B Hydrogenation
C Oxidation
D Crystallization

Answer: Hydrogenation

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