NCERT Class 11 Chemistry General Awareness Questions and Answers
NCERT Class 11 Chemistry
QUESTIONS
NCERT Class 11 Chemistry General Awareness Questions and Answers
91 Which one among the following is used as a moderator in nuclear reactors?
A Heavy water
B Hydrogen peroxide
C Heavy hydrogen
D Ozone
92 The concept of ellipitical orbitals was suggested by
A Sommerfeld
B Rutherford
C Neil Bohr
D Thomson
93 DDT is an
A insecticide
B enzyme
C antibiotic
D explosive
94 Which of the following substance is highly plastic?
A Clay
B Granite
C Quartz
D Mica
95 Which is used to produce artificial rain?
A silver iodide
B silver nitrate
C copper oxide
D sand
96 Oil of vitriol is
A sulphuric acid
B phosphoric acid
C hydrochloric acid
D nitric acid
97 Carbon occurs in nature in the purest form as
A Diamond
B Graphite
C Carbon black
D Coal
98 A polymeric substance used to make parachute is
A Viscose
B Terylene
C Rayon
D Cotton
99 Calcium sulphate is known as
A gypsum salt
B potash alum
C epsom salt
D blue vitriol
100 Epsom salt is chemically known as
A magnesium sulphate
B copper sulphate
C ferrous sulphate
D copper sulphate
Answer: magnesium sulphate