NCERT Class 11 Chemistry General Awareness Questions with Answers
NCERT Class 11 Chemistry
QUESTIONS
NCERT Class 11 Chemistry General Awareness Questions with Answers
61 The chemical name of quartz is
A Sodium silicate
B Sodium phosphate
C Calicum phosphate
D Calcium oxide
62 Which one of the following substances is made up of only one type of atoms?
A hydrogen
B air
C water
D milk
63 Which one of the following has the highest fuel value?
A gasoline
B hydrogen
C charcoal
D natural gas
64 Among the following elements, which one is not present in a pure sugar?
A Nitrogen
B oxygen
C Carbon
D hydrogen
65 Chloro-fluro-carbon gases are not used in which of the following?
A air-conditioning
B aerosol sprays
C refrigerators
D fire-extinguishers
Answer: fire-extinguishers
66 Which one of the following is used in preparing match sticks?
A Red phosphorus
B Sodium bicarbonate
C Chile saltpeter
D Indian salpetre
67 Which one of the following is present in the emission from “unleaded petrol”?
A ethylene
B hydrocarbons
C carbon monoxide
D carbon dioxide
68 Which one of the following is a major constituent of Biogas ?
A methane
B nitrogen dioxide
C Carbon dioxide
D hydrogen
69 Bronze is an alloy of
A Copper and tin
B Copper and zinc
C Tin and zinc
D Iron and zinc
70 Which one of the following elements is not present in stainless steel?
A Tungsten
B Nickel
C Iron
D Chromium