11th Chemistry Public Question Paper. We covered all the 11th Chemistry Public Question Paper MCQs in this post for free so that you can practice well for the exam.
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11th Chemistry Public Objective Question Paper for Students
Which one of the following is not a characteristic of a compound?
(a) Composition is variable
(b) All particles of the compound are of only one type
(c) Particles of the compound have two or more elements
(d) Its constituents cannot be separated by simple physical methods.
Option a – Composition is variable
Which one of the following elements will be an isobar of calcium if the atomic number of calcium is 20 and its mass number is 40?
(a) Element with 20 protons and 18 neutrons
(b) Element with 18 protons and 19 neutrons
(c) Element with 20 protons and 19 neutrons
(d) Element with 18 protons and 22 neutrons
Option d – Element with 18 protons and 22 neutrons
Which one of the following elements is used as a timekeeper in atomic clocks?
(a) Potassium
(b) Caesium
(c) Calcium
(d) Magnesium
Option b – Caesium
Which one of the following gases dissolves in water to give an acidic solution?
(a) Carbon dioxide
(b) Oxygen
(c) Nitrogen
(d) Hydrogen
Option a – Carbon dioxide
Why is argon gas used along with tungsten wire in an electric bulb?
(a) To increase the life of the bulb
(b) To reduce the consumption of electricity
(c) To make the emitted light colored
(d) To reduce the cost of the bulb
Option a – To increase the life of the bulb
Which one of the following is a heterogeneous mixture?
(a) Hydrochloric acid
(b) Vinegar
(c) Milk
(d) Soda water
Option c – Milk
Bright light is found to emit from a photographer’s flashgun. This brightness is due to the presence of which one of the following noble gases?
(a) Argon
(b) Xenon
(c) Neon
(d) Helium
Option b – Xenon
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