Is Matter Around Us Pure
Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.
Preview questions (no answers)
- 1.
If you stir a spoonful of sand into a glass of water, the resulting mixture is a:
A.True solution
B.Colloid
C.Suspension
D.Saturated solution
- 2.
Which of the following shows the Tyndall effect?
A.Salt solution
B.Sugar solution
C.Copper sulfate solution
D.Starch solution
- 3.
Which method is used to separate colors from a natural dye?
A.Crystallization
B.Chromatography
C.Centrifugation
D.Distillation
Download the worksheet for Is Matter Around Us Pure - Mixtures to practice offline. It includes additional chapter-level practice questions.
Preview questions (no answers)
- 1.
In which type of mixture are the particles uniformly distributed throughout the volume?
A.Homogeneous mixture
B.Heterogeneous mixture
C.Suspension
D.Oil in water
- 2.
Which gas is found in the highest percentage in the mixture we call air?
A.Oxygen
B.Nitrogen
C.Argon
D.Carbon dioxide
- 3.
If of glucose is dissolved in of water, what is the concentration in mass percentage?
A.B.C.D.
Download the worksheet for Is Matter Around Us Pure - Solutions to practice offline. It includes additional chapter-level practice questions.
Suspensions and Colloids
SubtopicSuspensions and Colloids under Is Matter Around Us Pure for Grade 9 CBSE.
Preview questions (no answers)
- 1.
Which of these mixtures will NOT show the Tyndall effect?
A.Starch solution
B.Milk
C.Copper sulfate solution
D.Fog
- 2.
The scattering of light by colloidal particles is known as:
A.Brownian movement
B.Tyndall effect
C.Reflection
D.Refraction
- 3.
Which of the following describes the stability of a colloid?
A.Highly unstable
B.Quite stable
C.Settle down immediately
D.Cannot be determined
Download the worksheet for Is Matter Around Us Pure - Suspensions and Colloids to practice offline. It includes additional chapter-level practice questions.
Physical and Chemical Changes
SubtopicPhysical and Chemical Changes under Is Matter Around Us Pure for Grade 9 CBSE.
Preview questions (no answers)
- 1.
Which of the following is a physical change occurring in the kitchen?
A.Vegetables getting cooked
B.Water boiling to form steam
C.Milk turning into curd
D.A matchstick burning
- 2.
When a fruit ripens, its color and taste change. This is a:
A.Physical change
B.Chemical change
C.Reversible change
D.State change
- 3.
What type of change is the formation of a rainbow?
A.Chemical change
B.Physical change
C.Nuclear change
D.Biological change
Download the worksheet for Is Matter Around Us Pure - Physical and Chemical Changes to practice offline. It includes additional chapter-level practice questions.
Types of Pure Substances
SubtopicTypes of Pure Substances under Is Matter Around Us Pure for Grade 9 CBSE.
Preview questions (no answers)
- 1.
Which of the following statements about pure substances is correct?
A.They can be either elements or compounds
B.They are always made of different types of atoms
C.They can be separated by physical methods
D.Their properties change with every sample
- 2.
Phosphorus and Sulfur are examples of:
A.Metals
B.Metalloids
C.Non-metals
D.Compounds
- 3.
Magnesium is a shiny, greyish-white solid that conducts heat. It is a/an:
A.Element (Metal)
B.Element (Non-metal)
C.Compound
D.Mixture
Download the worksheet for Is Matter Around Us Pure - Types of Pure Substances to practice offline. It includes additional chapter-level practice questions.