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Important questions for CBSE Class 9 Science are provided here to help students prepare 2, 3 and 4 point chapter questions. All questions are prepared by the exam experts.

CBSE Class 9 Sciences 2022: Here Jagran Josh presents important practice questions for Class 9 Science that need to be prepared for the upcoming CBSE Term 2 2022 Exam. 2, 3 and 4 point chapter questions are prepared by the exam experts to cover the topics major questions occurring in CBSE Class 9 Science Term 2 Semester 2 Syllabus. Students who wish to achieve grades above 90% in their CBSE Class 9 Science Term 2 exam must complete the major questions given below.

CBSE Class 9 Science Important Very Short Answer Questions

Some of the issues are mentioned below:

Q.Write down the full form of WHO.

Q. Name two non-infectious diseases.

Q.Write down two waterborne diseases.

Q. Write the difference between an acute illness and a chronic illness.

Q.Write down the expanded form of AIDS.

Q.What is the difference between “Being healthy” and “Disease-free”?

Q. Name two diseases that can be prevented by using a vaccine.

Q. Name the methods of treating infectious diseases.

Q. Name the organism that causes kala azar.

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CBSE Class 9 Science Important Short Answer Questions

Some of the issues are mentioned below:

Q.What is conservation of energy? Explain with an example.

Q. What do you mean by kinetic energy? Write its formula.

Q. On what factors does the kinetic energy of a body depend?

Q. What happens to the potential energy of a body when its height is doubled?

Q.How many joules are there in 1 kilowatt hour?

Q.Derive the formula for potential energy.

Q. If a 200 W electric iron is used for 30 minutes a day, find the electrical energy consumed in the month of April.

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CBSE Class 9 Science Important Case-Based Questions

Some of the issues are mentioned below:

Q.Read the following and answer the questions:

The concept of work in physics is much more narrowly defined than the common usage of the word. Work is done on an object when an applied force moves it a distance. In our everyday language, work is related to an expenditure of muscular effort, but this is not the case in the language of physics. A person holding a heavy object does no physical work because the force does not move the object a distance. Work, as defined by physics, is done while the heavy object is being lifted but not while the object is stationary. Another example of no work is a mass at the end of a rope rotating in a horizontal circle on a frictionless surface. The centripetal force is directed towards the center of the circle and therefore does not move the object a distance; that is, the force is not in the direction of the object’s motion. (However, work has been done to set the mass in motion.) Mathematically, the work is W = F × x, where F is the force applied and x is the distance traveled, i.e. the displacement. Work is a scalar. The SI unit of work is the joule (J), which is a newton meter or kg m/s2.

1. When a body falls freely to earth, then its total energy:

(increased

(b) decreases

(c) remains constant

(d) first increases then decreases

2.A car accelerates on a level road and reaches a speed 4 times higher than its initial speed. In this process, the potential energy of the car:

(a) does not change

(b) becomes twice the initial one

(c) becomes 4 times that of the initial

(d) becomes 16 times that of the initial value

3. In case of negative work, the angle between the force and the displacement is:

(a) 0

(b) 450

(c) 900

(d) 1800

4. An iron sphere with a mass of 10 kg has the same diameter as an aluminum sphere with a mass of 3.5 kg. Both spheres are simultaneously dropped from a tower. When they are 10m above the ground, they have the same:

(a) acceleration

(b) pulse

(c) potential energy

(d) kinetic energy

To respond:

1.(c) remains constant

2.(a) does not change

3.(d) 1800

4.(a) acceleration

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Also, check

CBSE Class 9 Science Best Study Material For Second Semester Exam 2022

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