Question 1 :
Click and choose the correct answer.<br>When chlorine gas is passed through an aqueous solution of potassium bromide, the solution turns brown due to the liberation of
Question 4 :
Click and choose the correct option.<br>Liquids that do not dissolve in water are called _________ liquids.
Question 5 :
Click and choose the correct option.<br>When a piece of magnesium ribbon is burned, it forms a white powder of __________.
Question 6 :
Click and choose the correct answer.<br>An atom that loses electrons becomes a positively-charged ion called
Question 7 :
Metals are arranged in the increasing order of their reactivity in the metal activity series.
Question 9 :
Click and choose the correct option.<br>___________ substances absorb moisture from the atmosphere and get wet.
Question 10 :
Click and choose the correct answer.<br>Which of the following is a colloid?
Question 12 :
Click and choose the correct answer.<br>Attractive forces that hold atoms or ions together to form molecules or compounds are called
Question 13 :
Click and choose the correct option.<br>A ____________ is a homogeneous mixture of two or more chemically non-reacting substances.
Question 14 :
Click and choose the correct option.<br>When decomposition is carried out by heating, it is called _________.
Question 15 :
An element with a valency of 1 is said to be monovalent.
Question 16 :
Click and choose the correct answer.<br>When two atoms share electrons, they form a bond called
Question 18 :
Click and choose the correct answer.<br>Permanent hardness of water is caused due to
Question 19 :
The rate of formation of a solution can be increased by stirring.
Question 20 :
Click and choose the correct option.<br>When electricity is passed through acidified water, it decomposes to give _______ and oxygen.