CBSE Class 9 Science SA2 Sample Paper 2014 (2)

Scroll down to download pdf file

CBSE Science SA2 Sample Paper for Class 9 CBSE exams for CBSE Students. Based on CBSE and CCE guidelines. The students should practice these Question Papers to gain perfection which will help him to get more marks in CBSE examination. Please refer to more CBSE Class 9 question papers in other links. The CBSE Question papers are prepared based on trend in past examinations and expected questions in CBSE exams. Its always recommended by CBSE to practice the papers released by CBSE to get better exams in CBSE exams. CBSE Last Year Question Papers for class 9 for final/ term/ SA1/ SA2 Examinations conducted by Central Board of Secondary Education for all CBSE affiliated schools in India and abroad. Please refer to more CBSE Class lX sample papers, question papers, HOTs etc in other links.

Class 9th (SA-II) Physics Assignment-I Chapter: Gravitation

Q1. A block weighing 1.0 kg is in the shape of a cube of length 10 cm. It is kept on a horizontal table. Find the pressure on the portion of the table where the block is kept. (ans. 1000Pa)

Q2. Find the thrust acting on the human body due to atmospheric pressure. Take the surface area of a man of middle size to be 1.5m2 and atmospheric pressure (1atm) =1.013×105 Pa. (ans.15.2 ton wt)

Q3. Calculate the mass of a body whose volume is 2 m3 and density 0.52 g/cm3. (ans. 1040 kg)

Q4. A dining hall has dimensions 50m × 15m × 3.5m. Calculate the mass of air in the hall. Given, density of air =1.30kg/m3. (ans. 3412.5 kg)

Q5. A thread of mercury of 10.2 g is in a tube of uniform cross section 0.1cm3. Calculate the length of thread. The density of mercury is 13.6g/cm3. (ans. 7.5cm)

Q6. A cubical block of water is dipped completely in water. Each edge of the block is 1cm in length. Find the buoyant force acting on the block. (ans. 10-2N)

Q7. A body of mass 2.0 kg and density 8000 kg/m3 is completely dipped in a liquid of density 800 kg/m3. Find the force of buoyancy on it. (ans. 2N)

Q8. A piece of iron of density 7.8 × 103kg/m3 and volume 100 cm3 is totally immersed in water. Calculate (a) the weight of the iron piece in air (b) the upthrust and (c) apparent weight in water. (ans. (a) 7.8N (b) 1N (c) 6.8 N)

Q9. A solid body of mass 150g and volume 250cm3 is put in water. Will the body float or sink.

Q10. A solid of density 5000kg/m3 weights 0.5 kg in air. It is completely immersed in water of density 1000kg/m3. (a) Calculate the apparent weight of solid in water.(ans. 0.4 kg) (b) What will be its apparent weight if water is replaced by a liquid of density 8000kg/m3? (ans. 0)

Q11. The mass of a block made of certain material is 13.5 kg and its volume is 15 × 10-3 m3. Will the block float or sink in water. Give reason for your answer.

Q12. (a) What is the density of air in NTP (b)What is the unit of relative density?

Q13. (a) When does a body sinks in a fluid? (b)Why does a balloon filled with hydrogen gas rise up against gravity?

Q14. (a) Which has greater density: 1 kg of iron or 2 kg of iron? (b)If a hollow sphere and a solid sphere are both made of the same amount of iron, which sphere has greater average density?

Q15. A. A body weighs 10 N in air and 8 N when fully immersed in water. How much is the buoyant force acting on the body? B. Why are the buoys making the channel in a river are hollow spheres?

Q16. State one important effect produced by the buoyant force exerted by water.

Q17. Where does a solid weigh more- in air or in a liquid?

Q18. Name two factors on which the buoyant force depends?

Q19. What is the relationship between the buoyant force on an object and the liquid displaced by it?

Q20. The relative density of mercury is 13.6. What does this statement mean?

Q21. The density of turpentine oil is 840 kg/m3. What will be its relative density?

Q22. Explain why big boulders can be moved easily by floods.

Q23. Why is a slight blow on a cork of bottle fully filled with a liquid sufficient to break the bottle?

Q24. Why is it easier to walk on soft sand with a flat shoe than a pencil-heeled shoe?

Q25. Lead has greater density than iron and both are denser than water. Is the buoyant force on a lead pencil greater than, less than or equal to the buoyant force on an iron object of same volume?

Q26. Why do you feel lighter when you swim?

Q27. Why is a bucket of water lighter when in water than when it is taken out of water?

Q28. Why it is easier to swim in sea water tan in river water?

Q29. Two different objects are completely immersed in water and undergo same loss in weight. Is it necessary that the weight of these objects in air be also the same?

Q30. If two equal weights of unequal volumes are balanced in air, what will happen when these are completely dipped in water?

Please refer to attached file for CBSE Class 9 Science SA2 Sample Paper 2014 (2)




Click on the text For more study material for Science please click here - Science

Latest CBSE News

  • Google has partnered with NCERT to educate children on Digital Citizenship and Safety. As per latest news from Google, they will help NCERT in designing study material on awareness on being good and responsible digital citizens. This new curriculum will be introduced in computers or Information and Communication Technology (ICT) curriculum in schools from class 1 till class 12. Nowadays students...
  • National Council of Educational Research and Training is going to conduct a National Achievement Test (NAS Test) for Class 10 students of CBSE, ICSE affiliated schools and on February 5 in Gurugram (Gurgaon). The test is scheduled to be conducted in more than 100 private and government schools in the city. The test will be conducted for five subjects which are mathematics, English, social and...
  • The Central Board of Secondary Education (CBSE) has started its helpline for students appearing in the upcoming examinations. The board exams for class 10 and class 12 are due to start from 5th March and will continue till 13th April. To help the students to resolve any query they might have for the examinations or to get tips from teachers they can call the helpline started by CBSE. The...
  • Concerns have been shown by the class 12 students regarding the datesheet released by CBSE for class 12 board examination. Some of the examinations are back to back leaving little space for students to relax and revise for next exam. Specifically those in the humanities/ arts stream are the most impacted as exam for psychology exam is on April 5, political science exam is on April 6 and legal...
  • With the help of Ramakrishna mission’s, the CBSE board provides better educational lessons for its students The Ramakrishna Mission, New Delhi has come up with an innovative idea of conducting 'Awakened Citizen Programme' for all the students and teachers. The aim of the program is to promote and strengthen the standards of education all over India. The CBSE board As the Central Board of...