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Question Bank Solutions for CBSE Class 9 - CBSE - Science

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Make a comparison and write down ways in which plant cells are different from animal cells.

[0.05] The Fundamental Unit of Life
Chapter: [0.05] The Fundamental Unit of Life
Concept: The Invention of the Microscope and the Discovery of Cell

What is osmosis?

[0.05] The Fundamental Unit of Life
Chapter: [0.05] The Fundamental Unit of Life
Concept: The Invention of the Microscope and the Discovery of Cell

Carry out the following osmosis experiment:

Take four peeled potato halves and scoop each one out to make potato cups. One of these potato cups should be made from a boiled potato. Put each potato cup in a trough containing water. Now,

(a) Keep cup A empty

(b) Put one teaspoon sugar in cup B

(c) Put one teaspoon salt in cup C

(d) Put one teaspoon sugar in the boiled potato cup D.

Keep these for two hours. Then observe the four potato cups and answer the following:

(i) Explain why water gathers in the hollowed portion of B and C.

(ii) Why is potato A necessary for this experiment?

(iii) Explain why water does not gather in the hollowed out portions of A and D.

[0.05] The Fundamental Unit of Life
Chapter: [0.05] The Fundamental Unit of Life
Concept: The Invention of the Microscope and the Discovery of Cell

Which of the following materials fall in the category of a “pure
substance”?

(a) Ice

(b) Milk

(c) Iron

(d) Hydrochloric Acid

(e) Calcium oxide

(f) Mercury

(g) Brick

(h) Wood

(i) Air

[0.01] Matter in Our Surroundings
Chapter: [0.01] Matter in Our Surroundings
Concept: Matter

Classify the following into elements, compounds and mixtures:

(a) Sodium

(b) Soil

(c) Sugar solution

(d) Silver

(e) Calcium carbonate

(f) Tin

(g) Silicon

(h) Coal

(i) Air

(j) Soap

(k) Methane

(l) Carbon dioxide

(m) Blood

[0.01] Matter in Our Surroundings
Chapter: [0.01] Matter in Our Surroundings
Concept: Matter

Which type of cell division is required for growth and repair
of body and which type is involved in formation of gametes?

[0.05] The Fundamental Unit of Life
Chapter: [0.05] The Fundamental Unit of Life
Concept: The Invention of the Microscope and the Discovery of Cell

What are the conditions for 'something' to be called 'matter'?

[0.01] Matter in Our Surroundings
Chapter: [0.01] Matter in Our Surroundings
Concept: Matter

Name two processes which provide the best evidence for the motion of particles in matter.

[0.01] Matter in Our Surroundings
Chapter: [0.01] Matter in Our Surroundings
Concept: Matter

What is the scientific name of particles which make up mater?

[0.01] Matter in Our Surroundings
Chapter: [0.01] Matter in Our Surroundings
Concept: Matter

Out of solids, liquids and gases, which one has :

  1. maximum movement of particles ?
  2. maximum interparticle attractions ?
  3. minimum spaces between particles ?
[0.01] Matter in Our Surroundings
Chapter: [0.01] Matter in Our Surroundings
Concept: Matter

Fill in the following blank with suitable words :

The best evidence that the particles of matter are constantly moving comes from the studies of ................. and ...................

[0.01] Matter in Our Surroundings
Chapter: [0.01] Matter in Our Surroundings
Concept: Matter

State two characteristics of matter demonstrated by Brownian motion.

[0.01] Matter in Our Surroundings
Chapter: [0.01] Matter in Our Surroundings
Concept: Matter

Name the scientist who studied the movement of pollen grains suspended in water through a microscope. What is this phenomenon known as?

[0.01] Matter in Our Surroundings
Chapter: [0.01] Matter in Our Surroundings
Concept: Matter

When a crystal of potassium permanganate is placed in a beaker, its purple colour spreads throughout the water. What does this observation tell us about the nature of potassium permanganate and water?

[0.01] Matter in Our Surroundings
Chapter: [0.01] Matter in Our Surroundings
Concept: Matter

When a gas jar containing air is inverted over a gas jar containing bromine vapour, the red-brown bromine vapour diffuse into air. Explain how bromine vapour diffuse into air.

[0.01] Matter in Our Surroundings
Chapter: [0.01] Matter in Our Surroundings
Concept: Matter

Describe in your own words, what happens to the particles when salt dissolves in water.

[0.01] Matter in Our Surroundings
Chapter: [0.01] Matter in Our Surroundings
Concept: Matter

Honey is more viscous than water. Can you suggest why?

[0.01] Matter in Our Surroundings
Chapter: [0.01] Matter in Our Surroundings
Concept: Matter

Explain why air is used to inflate tyres.

[0.01] Matter in Our Surroundings
Chapter: [0.01] Matter in Our Surroundings
Concept: Matter

Explain why steel is used to make railway lines.

[0.01] Matter in Our Surroundings
Chapter: [0.01] Matter in Our Surroundings
Concept: Matter

Define matter. Give four examples of matter.

[0.01] Matter in Our Surroundings
Chapter: [0.01] Matter in Our Surroundings
Concept: Matter
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Question Bank Solutions for CBSE Class 9 CBSE Science. You can further filter Question Bank Solutions by subjects and topics. Solutions for most of the questions for CBSE can be found here on Shaalaa.com. You can use these solutions to prepare for your studies and ace in exams. Solving questions is a great way to practice and with Shaalaa.com, you can answer a question and then also check your answer with the solutions provided.
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