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Free download in PDF CBSE Class 11 Chemistry Multiple Choice Questions(MCQs) & Answers. Here Gkseries provide Chemistry Solve Questions and Answers for CBSE Class 11 Students.
(1)
Bagasse, a by-product of sugar manufacturing industry is used for the production of
[A]
Nylon
[B]
Alcohol
[C]
Paper
[D]
Glass
(2)
Which synthetic fibre is known as artificial silk?
[A]
Rayon
[B]
Nylon
[C]
Cotton
[D]
Terylene
(3)
Mixture of which one of the following pairs of gases is the causes of occurance of most of the explosion in mines?
[A]
Methane and air
[B]
Carbon dioxide and methane
[C]
Hydrogen and oxygen
[D]
oxygen and acetylene
(4)
Which one of the following is used as a mordant in dying and tanning industry?
[A]
Magnesium sulphate
[B]
Magnesium chloride
[C]
Magnesium oxide
[D]
Magnesium carbonate
Answer: Magnesium sulphate
(5)
What are Rubies and Sapphires chemically known as
[A]
Aluminium oxide
[B]
Boron nitride
[C]
Lead tetra oxide
[D]
Silicon dioxide
(6)
Which one of the following is also called Stranger Gas?
[A]
Xenon
[B]
Nitrous oxide
[C]
Argon
[D]
Neon
(7)
Which one of the following when dissolved in HO gives hissing sound?
[A]
quick lime
[B]
slacked lime
[C]
M, m
[D]
soda lime
(8)
Which one among the following is called philosophers wool?
[A]
zinc oxide
[B]
zinc chloride
[C]
zinc bromide
[D]
zinc nitrate
(9)
Which one of the following does not contain silver?
[A]
Lunar caustic
[B]
horn silver
[C]
german silver
[D]
ruby silver
(10)
The chemicals used as a fixer in phosphorous is
[A]
borax
[B]
sodium thiosulpahte
[C]
sodium sulphate
[D]
ammonium persulphate
Answer: sodium thiosulpahte
(11)
For Which one of the following is the density maximum ?
[A]
Water
[B]
Ice
[C]
Chloroform
[D]
Benzene
(12)
What is the main constituent of coal gas?
[A]
Methane
[B]
Nitrogen
[C]
Oxygen
[D]
Water
(13)
Which of the following is the source of common salt?
[A]
Halite
[B]
Calcite
[C]
Bauxite
[D]
Pyrite
(14)
The gas that is responsible for global warming is
[A]
Sulphur dioxide
[B]
Carbon dioxide
[C]
Oxygen
[D]
Methane
(15)
Which metal is commonly used for making an electromagnet?
[A]
Iron
[B]
Nickel
[C]
Cobalt
[D]
Copper
(16)
Acetyl salicylic acid is commonly used as
[A]
A fertilizer
[B]
A sedative
[C]
A pain killer
[D]
Tear gas
(17)
Commercially, sodium bicarbonate is known as
[A]
Baking soda
[B]
Bleaching powder
[C]
Washing soda
[D]
Soda ash
(18)
Which metal remains in the liquid form under normal conditions?
[A]
uranium
[B]
mercury
[C]
zinc
[D]
radium
(19)
Which one of the following is not a chemical change ?
[A]
Crystallization of table salt from sea water
[B]
Cracking of petroleum
[C]
Fermentation of sugarcane juice
[D]
Burning of coal in air
Answer: Crystallization of table salt from sea water
(20)
Which one of the following non metals is not a poor conductor of electricity
[A]
Selenium
[B]
Phosphorus
[C]
Sulphur
[D]
Bromine
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