English Medium Class 9 - CBSE Question Bank Solutions

What elements do the following compounds contain ?

Sugar, Common salt

What are pure substances ? Give two examples of pure substances.

What are pure substances ? Give two examples of pure substances.

What are the two types of pure substances? Give one example of each type.

What are the two types of pure substances? Give one example of each type.

Which of the following are ‘pure substances’ ?
Ice, Milk, Iron, Hydrochloric acid, Calcium oxide, Mercury, Brick, Wood, Air

Which of the following are ‘pure substances’ ?
Ice, Milk, Iron, Hydrochloric acid, Calcium oxide, Mercury, Brick, Wood, Air

What is the other name for impure substances ? Give two examples of impure substances.

What is the other name for impure substances ? Give two examples of impure substances.

Which of the following substances are elements ?

Water, Salt, Mercury, Iron, Marble, Diamond, Wood, Nitrogen, Air, Graphite, Hydrogen, Oxygen, Sugar, Chlorine

Which of the following substances are elements ?

Water, Salt, Mercury, Iron, Marble, Diamond, Wood, Nitrogen, Air, Graphite, Hydrogen, Oxygen, Sugar, Chlorine

Name two solid, two liquid and two gaseous elements at the room temperature.

Name two solid, two liquid and two gaseous elements at the room temperature.

Explain why, hydrogen and oxygen are considered elements whereas water is not considered an element.

Explain why, hydrogen and oxygen are considered elements whereas water is not considered an element.

What are the three groups into which all the elements can be divided ? Name two elements belonging to each group.

What are the three groups into which all the elements can be divided ? Name two elements belonging to each group.

State two physical properties on the basis of which metals can be distinguished from non-metals.

State two physical properties on the basis of which metals can be distinguished from non-metals.

State any two properties for believing that aluminium is a metal.