HARD
9th CBSE
IMPORTANT
Earn 100

A mixture of sulphur and carbon disulphide is

50% studentsanswered this correctly

Important Questions on Is Matter Around Us Pure?

EASY
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 2 - Is Matter Around Us Pure?>EXERCISES>Q A
Rusting of an article made up of iron is called
EASY
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 2 - Is Matter Around Us Pure?>EXERCISES>Q A

Which of the following are chemical changes?

i. Sawing of wood ii. Burning of wood iii. Decaying of wood iv. Hammering of a nail into a piece of wood.

HARD
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 2 - Is Matter Around Us Pure?>EXERCISES>Q A
To a solution of copper(ll) sulphate pentahydrate in a test tube, few iron filings are added. Which of the following is incorrect?
HARD
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 2 - Is Matter Around Us Pure?>EXERCISES>Q A
About 0.5 g of soil was taken in a test tube and to this, 10 ml of water was added. The mixture was shaken thoroughly and was allowed to stand in a test tube stand. The mixture was filtered. Which of the following is correct regarding the filtrate?
HARD
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 2 - Is Matter Around Us Pure?>EXERCISES>Q A
To a mixture of sulphur, iron filings, carbon and potassium chloride taken in a test tube, water was added. The mixture was shaken thoroughly and filtered. The filtrate contains
MEDIUM
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 2 - Is Matter Around Us Pure?>EXERCISES>Q A
About 5 mL of dilute hydrochloric acid is taken in a test tube. To this, a few pieces of granulated zinc are added. Which of the following is true?
MEDIUM
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 2 - Is Matter Around Us Pure?>EXERCISES>Q A
Two chemical species A and B combine to form C which contains both A and B. A and B cannot be broken down into simpler substances by simple chemical reactions.
A +  B →  C
Which of the following are correct?
i. C has a fixed composition
ii. A and B are elements
iii. A and B are compounds
iv. C is a compound.
HARD
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 2 - Is Matter Around Us Pure?>EXERCISES>Q A
Two substances X and Y react to form a new substance X2Y according to the following equation:
2X + Y → X2Y
Which of the following are incorrect?
i. The product formed is an element.
ii. The product cannot be classified as a compound.
iii. The product will always have a fixed composition.
iv. X2Y exhibits the properties of both A and B.