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CBSE Class 11 Chemistry Quiz | CBSE Class 11 Chemistry Short Questions & Answers

Questions
41 The chemical name of quartz is
A Sodium silicate
B Sodium phosphate
C Calicum phosphate
D Calcium oxide

Answer: Sodium silicate
42 Which among the following is in liquid state at normal room temperature?
A Mercury
B Phosphorous
C Sodium
D Copper

Answer: Mercury
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43 What is the first element of periodic table?
A Hydrogen
B Neon
C Sodium
D Helium

Answer: Hydrogen
44 The chemical name of laughing gas is
A Nitrous oxide
B Nitrogen peroxide
C Nitric oxide
D Nitrogen dioxide

Answer: Nitrous oxide
45 What is the chemical name of Green vitriol?
A Iron sulphate
B Calcium cyanamide
C Calcium carbonate
D Calcium phosphate

Answer: Iron sulphate
46 The substance used in the manufacture of high voltage insulators is
A Artificial rubber
B Silicons
C Natural rubber
D Silicon carbide

Answer: Silicons
47 Retinol is the chemical name of
A Vitamin A
B Vitamin K
C Vitamin E
D Vitamin D

Answer: Vitamin A
48 Which one of the following has the highest fuel value?
A gasoline
B hydrogen
C charcoal
D natural gas

Answer: hydrogen
49 Among the following elements, which one is not present in a pure sugar?
A Nitrogen
B oxygen
C Carbon
D hydrogen

Answer: Nitrogen
50 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
51 Which one of the following is used in preparing match sticks?
A Red phosphorus
B Sodium bicarbonate
C Chile saltpeter
D Indian salpetre

Answer: Red phosphorus
52 Which one of the following is present in the emission from “unleaded petrol”?
A ethylene
B hydrocarbons
C carbon monoxide
D carbon dioxide

Answer: hydrocarbons
53 Which one of the following is a major constituent of Biogas ?
A methane
B nitrogen dioxide
C Carbon dioxide
D hydrogen

Answer: methane
54 Which one of the following materials is suitable for water purification?
A Zeolites
B Quartz
C Silicones
D Asbestos

Answer: Zeolites
55 Which one of the following is an element which never exhibits positive oxidation state in any of its compounds?
A Fluorine
B Carbon
C Oxygen
D Chlorine

Answer: Fluorine
56 Which one of the following correctly defines the state of glass?
A Crystalline solid
B Super cooled liquid
C Condensed gas
D Liquid crystal

Answer: Super cooled liquid
57 Nail polish remover contains
A Acetone
B Acetic acid
C Benzeme
D Petroleum ether

Answer: Acetone
58 Which of the following elements behave chemically both as metal and non metal?
A Xenon
B Argon
C Boron
D Carbon

Answer: Boron
59 Vinegar is trade name of
A Carbon tetrachloride
B Acetic acid
C Chloroform
D Ethyl alcohol

Answer: Acetic acid
60 The cathode of a lead storage battery is made up of
A Lead
B Manganese dioxide
C Lead oxide
D Zinc

Answer: Lead

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