NCERT Class 11 Chemistry Multiple Choice Questions(MCQs) & Answers
NCERT Class 11 Chemistry
QUESTIONS
NCERT Class 11 Chemistry Multiple Choice Questions(MCQs) & Answers
21 The chemical name of bauxite is
A Hydrated aluminium oxide
B Aluminium sulphite
C Aluminium chloride
D Aluminium oxide
Answer: Hydrated aluminium oxide
22 Which of the following metals is in liquid state at normal room temperature?
A Sodium
B Gallium
C Radon
D Silicon
23 The major constituent of air is
A Nitrogen
B Oxygen
C Carbon dioxide
D Hydrogen
24 Which synthetic fibre is known as artificial silk?
A Rayon
B Terylene
C Nylon
D Cotton
25 Which of the following is the source of common salt?
A Halite
B Calcite
C Bauxite
D Pyrite
26 The gas that is responsible for global warming is
A Sulphur dioxide
B Carbon dioxide
C Oxygen
D Methane
27 Tobacco is preserved from drying out in
A glycerol
B ethanol
C glycol
D acetone
28 The chief source of aluminium is
A Feldspar
B Cargolite
C Bauxite
D Haematite
29 What is the chemical name for marble?
A Titanium dioxide
B Calcium bicarbonate
C Potassium nitrate
D Calcium carbonate
30 Which variety of glass is heat resistant?
A Pyrex glass
B Flint glass
C Hard glass
D Bottle glass