i-tutor complete syllabus test-2

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i-Tutor Complete Syllabus Test-2A Science-CBSE (Class IX)

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M.M. : 80 i-Tutor Complete Syllabus Test-2 Time : 3 Hrs. Science-CBSE (Class IX)

(i) The question paper comprises four sections A, B, C and D. There are 36 questions in the question paper. (ii) All questions are compulsory. (iii) Section A comprises of 20 questions, all questions and parts thereof are of 1 mark each and these questions

contain Very Short Answer Type, Assertion & Reason Type and Multiple Choice Type. Section B comprises of 6 questions of 2 marks each. Section C comprises of 7 questions of 3 marks each and Section D comprises of 3 questions of 5 marks each.

(iv) There is no overall choice in the paper. However, internal choice is provided in 4 questions of 1 mark, 1 question of 2 marks, 1 question of 3 marks, 2 questions of 5 marks.

(v) Wherever necessary, neat and properly labelled diagrams should be drawn. (vi) Use of calculator is not permitted. (vii) It is mandatory to use Blue/Black Ballpoint Pen to write the answer.

SECTION-A Very Short Answer Type Questions : [13×1=13] 1. Define alloy. [1] 2. Give any two examples of a mixture. [1]

OR Write the different types of mixture. [1] 3. Write any one application of chromatography. [1] 4. Direction of acceleration of moving particle in a circular path with uniform speed does not change. (True/False)

[1] 5. Name the force which causes the body to move in circular path. [1] 6. Define acceleration. [1] 7. What is uniform motion? [1]

Topics Covered :

Physics : Complete Syllabus (Excluding the topics/chapters deleted by CBSE)

Chemistry : Complete Syllabus (Excluding the topics/chapters deleted by CBSE)

Biology : Complete Syllabus (Excluding the topics/chapters deleted by CBSE)

GENERAL INSTRUCTIONS :

Code A Date : 03-02-2021

Science-CBSE (Class IX) i-Tutor Complete Syllabus Test-2A

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8. Name the factor on which the force need to stop a moving body of given mass in a given time, depends [1] 9. A body of mass 20 kg is moving with a speed of 25 ms–1. Find linear momentum of the body. [1]

OR What do you mean by weight of an object? [1] 10. According to Schleiden and Schwann what is cell theory? [1] 11. Who suggested that ‘Omnis cellula-e-cellula’ and what does it mean? [1] 12. Name the causal agent of peptic ulcer. [1]

OR Give the two types of fluid connective tissue. [1] 13. Name the tissue that is present in ear. [1] Assertion & Reason Type Questions : [3×1=3] In the following questions, a statement of Assertion (A) is followed by a statement of Reason (R). (1) Both (A) and (R) are true and (R) is the correct explanation of (A) (2) Both (A) and (R) are true but (R) is not the correct explanation of (A) (3) (A) is true but (R) is false (4) (A) is false and (R) is True 14. A : Metals are malleable. [1] R : Metals can be drawn into wire. 15. A : As plants grow older, the outer protective tissue undergoes certain changes. [1] R : Cells of cork are dead and compactly arranged without intercellular spaces.

OR A : Collenchyma tissue is considered as dead tissue. [1] R : It has nucleus and irregular thickenings at corners. 16. A : When we walk on the ground, our feet push the ground backward and in return the ground pushes our

feet forward. [1] R : To every action there is an equal and opposite reaction and they act on two different bodies. Multiple Choice Type Questions : [4×4=16] 17. A cell is able to line and undertake all its life functions because of its cell organelles. A cell is tiny mass of

protoplasm surrounded by a membrane and consists of special cytoplasmic structures called cell organelles. (i) Select the incorrect statement regarding DNA. [1] (1) DNA molecules contain the information necessary for constructing and organizing cells (2) Functional segment of DNA is called chromosome (3) In non-dividing cells, DNA is present as part of chromatin material (4) DNA is deoxyribonucleic acid (ii) Which of the following cell organelles are involved in the process of detoxification? [1] (1) Ribosome and rough endoplasmic reticulum (2) Peroxisome and smooth endoplasmic reticulum (3) Lysosome and Golgi apparatus (4) Ribosome and chromoplast (iii) Subunits of ribosomes which are found in prokaryotic cells are [1] (1) 40S and 30S (2) 50S and 20S (3) 50S and 30S (4) 50S and 40S


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(iv) Select the incorrect match from the following. [1] (1) Chromatophore – Branched (2) Fat cell – Stellate (3) Smooth muscle fibre – Spindle-shaped (4) Liver cell – Polygonal 18. A colloid is a solution in which the size of solute particles is bigger than that of a true solution but smaller than

that of a suspension. A colloidal system consists of two phases: dispersed phase and dispersion medium. (i) Fog is an example of [1] (1) Foam (2) Sol (3) Aerosol (4) Gel (ii) Which of the following will show Tyndall effect? [1] (1) Copper sulphate + Water (2) Sugar + Water (3) Milk + Water (4) Salt + Water (iii) Consider the following box : [1]

Soda water, milk, mud, foam, smoke, tincture of iodine

The total number of colloids is (1) 3 (2) 4 (3) 2 (4) 5 (iv) Which of the following is a pair of emulsion? [1] (1) Milk, mud (2) Milk, face cream (3) Face cream, jelly (4) Butter, cheese 19. According to the law of conservation of energy, the total energy of the universe will remain constant. But it

does not mean that the entire energy is available to us for use such as in cooking, operating machine and appliance, running vehicles, etc. When energy is required for certain purpose, we transform energy from the given form to the desired form. While transformation of energy from one form to the other desired form, the entire energy does not change into the desired form, but a part of it always changes to some other form (usually heat due to friction) which is not useful.

(i) A steam engine converts ____ into mechanical energy. [1] (1) Sound energy (2) Heat energy (3) Light energy (4) Potential energy (ii) Change in kinetic energy is equal to [1] (1) Potential energy (2) Electrical energy (3) Work done (4) Change in linear momentum (iii) A flying bird possesses [1] (A) Momentum (B) Kinetic energy (C) Potential energy (1) Only (A) (2) Only (C) (3) Both (B) and (C) (4) All (A), (B) and (C) (iv) A stone kept at certain height has a ability to do work due to its [1] (1) Potential energy (2) Kinetic energy (3) Weight (4) Mass


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20. (i) The speed of falling body increases continuously. This is because [1] (1) Air exerts frictional force on it (2) It is very heavy

(3) No force acts on it (4) The earth attracts it

(ii) A body is moving with a constant speed of 72 km/h on a rough horizontal surface. The net force acting on the body is [1]

(1) 60 N (2) 120 N

(3) Zero (4) 72 N

(iii) Newton’s law of gravitation is valid [1] (1) On the earth only (2) On the moon only

(3) In the laboratory only (4) Everywhere

(iv) If acceleration of a particle is in the direction of its motion, then its speed [1] (1) Always decreases (2) Always increases

(3) May increase or decrease (4) First increase then decrease

SECTION-B Short Answer Type Questions : [6×2=12] 21. Give any two functions of cell organelle that was discovered by Christian de Duve. [2]

22. Discuss any two measures that should be taken at community level to prevent infection. [2]

23. Differentiate between isotopes and isobars with examples. [2]

OR

Write the electronic distribution of following elements: [2]

(a) Carbon

(b) Magnesium

(c) Chlorine

(d) Potassium

24. The average atomic mass of a sample of an element E is 23.4 u. What are the percentages of isotopes 2212 E and 24

12 E in the sample? [2]

25. A truck falls off a ledge and drops to the ground in 1 s. Calculate its speed on striking the ground and its average speed during 1 s. [Take g = 10 m/s2] [2]

26. An object of mass 10 kg is dropped from a tower of height 150 m. The body strikes the ground with velocity 40 ms–1. Calculate work done by air friction. [Take g = 10 m/s2] [2]

SECTION-C Short Answer Type Questions : [7×3=21] 27. (i) What is endocytosis? [½]

(ii) Explain any one type of endocytosis with the help of diagram. [2½]

28. Write any three differences between bone and cartilage. [3]

29. (i) Define following : [2]

(a) Antigen

(b) Antibody


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(ii) Name the causal agents of malaria and infantile paralysis. [1]

OR

State any two preventive measures of each of the given diseases. [3]

(i) Polio

(ii) Typhoid

(iii) AIDS

30. Consider the given table :

Mass Atomic Number of Elements number number neutronsX 23 A 12Y B 20 20Z 40 18 C

Now, answer the following questions :

(i) Identify the pair of isobars. [1]

(ii) Find the number of electrons present in M shell of Y. [1]

(iii) Find the valency of X. [1]

31. Write the chemical formula of the following compounds. [½×6]

(i) Ethyne

(ii) Nitric acid

(iii) Baking soda

(iv) Quicklime

(v) Common salt

(vi) Water 32. Write any three applications of centrifugation. [3] 33. Derive the equation given below with the help of velocity-time graph. [3]

212

S ut at= +

SECTION-D

Long Answer Type Questions : [3×5=15] 34. (i) Write the molecular formula of the given compounds and also calculate their molecular masses : [3]

(a) Sodium sulphate

(b) Sulphuric acid

(ii) Write the valencies of the given elements : [2]

(a) Aluminium

(b) Potassium

(c) Calcium

(d) Fluorine


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OR (i) Calculate the number of moles of the following [2] (a) 96 g of C

(b) 1.8066 × 1024 atoms of C

(ii) Calculate the percentage of oxygen and carbon in a molecule of limestone. [3] (Atomic mass of Ca = 40 u, C = 12 u and O = 16 u) 35. (i) What are chronic diseases? [1] (ii) Write the name of any two chronic diseases. [1] (iii) Write any three effects of chronic diseases. [3] 36. (i) Explain why a cricket player lowers his hand while catching the ball. (Illustrate by example). [2] (ii) Derive the mathematical expression of Newton’s second law. [3]

OR State and prove conservation of linear momentum. [5]

Edition: 2020-21

i-tutor complete syllabus test-2

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