Download PDF
Free download in PDF CBSE Class 11 Chemistry Short Questions & Answers. Here Gkseries provide Chemistry Solve Questions and Answers for CBSE Class 11 Students.
41
The chemical name of quartz is
[A]
Sodium silicate
[B]
Sodium phosphate
[C]
Calicum phosphate
[D]
Calcium oxide
42
Which among the following is in liquid state at normal room temperature?
[A]
Mercury
[B]
Phosphorous
[C]
Sodium
[D]
Copper
43
What is the first element of periodic table?
[A]
Hydrogen
[B]
Neon
[C]
Sodium
[D]
Helium
44
The chemical name of laughing gas is
[A]
Nitrous oxide
[B]
Nitrogen peroxide
[C]
Nitric oxide
[D]
Nitrogen dioxide
45
What is the chemical name of Green vitriol?
[A]
Iron sulphate
[B]
Calcium cyanamide
[C]
Calcium carbonate
[D]
Calcium phosphate
46
The substance used in the manufacture of high voltage insulators is
[A]
Artificial rubber
[B]
Silicons
[C]
Natural rubber
[D]
Silicon carbide
47
Retinol is the chemical name of
[A]
Vitamin A
[B]
Vitamin K
[C]
Vitamin E
[D]
Vitamin D
48
Which one of the following has the highest fuel value?
[A]
gasoline
[B]
hydrogen
[C]
charcoal
[D]
natural gas
49
Among the following elements, which one is not present in a pure sugar?
[A]
Nitrogen
[B]
oxygen
[C]
Carbon
[D]
hydrogen
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
52
Which one of the following is present in the emission from “unleaded petrol”?
[A]
ethylene
[B]
hydrocarbons
[C]
carbon monoxide
[D]
carbon dioxide
53
Which one of the following is a major constituent of Biogas ?
[A]
methane
[B]
nitrogen dioxide
[C]
Carbon dioxide
[D]
hydrogen
54
Which one of the following materials is suitable for water purification?
[A]
Zeolites
[B]
Quartz
[C]
Silicones
[D]
Asbestos
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
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
58
Which of the following elements behave chemically both as metal and non metal?
[A]
Xenon
[B]
Argon
[C]
Boron
[D]
Carbon
59
Vinegar is trade name of
[A]
Carbon tetrachloride
[B]
Acetic acid
[C]
Chloroform
[D]
Ethyl alcohol
60
The cathode of a lead storage battery is made up of
[A]
Lead
[B]
Manganese dioxide
[C]
Lead oxide
[D]
Zinc
Take Mock Tests