List of top Questions asked in CBSE Class IX

Lushkoff is earning thirty five roubles a month. How is he obliged to Sergei for this?
Look at the activities listed below. Reason out whether or not work is done in the light of your understanding of the term ‘work’.
• Suma is swimming in a pond.
• A donkey is carrying a load on its back.
• A wind-mill is lifting water from a well.
• A green plant is carrying out photosynthesis.
• An engine is pulling a train.
• Food grains are getting dried in the sun.
• A sailboat is moving due to wind energy.
The slant height and base diameter of a conical tomb are 25 m and 14 m respectively. Find the cost of whitewashing its curved surface at the rate of ₹210 per 100 m2.
The author has drawn powerful images and pictures. Pick out three examples each of
(i) the atmosphere of ‘febrile confusion’ outside the temple of Pashupatinath (for example: some people trying to get the priest’s attention are elbowed aside...)
(ii) the things he sees
(iii) the sounds he hears
Sides of a triangle are in the ratio of 12: 17: 25 and its perimeter is 540cm. Find its area.
Sergei says, “I am happy that my words have taken effect.” Why does he say so? Is he right in saying this?
Where was Abdul Kalam’s house?
What shows her concern for the environment?
What kind of teachers did Margie and Tommy have?
What is the importance of universal law of gravitation?
What is Johnsy’s illness? What can cure her, the medicine or the willingness to live?
What is Behrman’s masterpiece? What makes Sue say so?
Two circles of radii 5 cm and 3 cm intersect at two points and the distance between their centres is 4 cm. Find the length of the common chord.
Two children are at opposite ends of an aluminium rod. One strikes the end of the rod with a stone. Find the ratio of times taken by the sound wave in air and in aluminium to reach the second child.
An object of mass \(40\) \(kg\) is raised to a height of \(5\) \(m\) above the ground. What is its potential energy? If the object is allowed to fall, find its kinetic energy when it is half-way down.
ABC and ADC are two right triangles with common hypotenuse AC. Prove that ∠ CAD = ∠ CBD.
How does the poet imagine her to be, after death? Does he think of her as a person living in a very happy state (a ‘heaven’)? Or does he see her now as a part of nature? In which lines of the poem do you find your answer?
Do you think the feeling of depression Johnsy has is common among teenagers?
An object of mass, m is moving with a constant velocity, v. How much work should be done on the object in order to bring the object to rest?
What do you think Dinamani is the name of? Give a reason for your answer.
Find three different irrational numbers between the rational numbers \(\frac{5}{7}\) and \(\frac{9}{11}\).
Why did Margie’s mother send for the County Inspector?
Represent √9.3 on the number line
What do you think happens in the end? Does the child find his parents?
Have you seen anybody winnow grain at home or in a paddy field? What is the word in your language for winnowing? What do people use for winnowing? (Give the words in your language, if you know them.)