DAV question paper for class 9 science
Max. Marks: 80 Time Allowed: 3 hours
General Instructions:
1. Section A would have 20 simple/complex MCQs
questions carrying 1 mark each.
2. Section B would have 6 Short Answer (SA) type questions carrying 02 marks each.
3. Section C would have 7 Short Answer (SA) type questions carrying 03 marks each.
4. Section D would have 3 Long Answer (LA) type questions carrying 05 marks each.
5. Section E would have 3 source based/case based/passage based/integrated units of
assessment (04 marks each)
Section A
Question 1 to 16 are multiple choice questions. Only one of the choices is correct. Select and
write the correct choice as well as the answer to these questions.
1.The longest cell in the human body is
(a) nerve cell
(b) muscle cell
(c) liver cell
(d) kidney cell
2. A cell placed in solution swells up. The solution is
(a) hypertonic
(b) isotonic
(d) hypotonic
(d) both a and b
3. Parenchyma which contains chlorophyll is called:
(a) collenchyma
(b) selerenchyma
(c) chlorenchyma
(d) none of these
4. Permanent tissues differe from meristematic tissue in
(a) inability to divide
(b) attainment of definite shape and size
(c) performing a distinct function
(d) all the above
5. Which of the following is not an example of simple tissue in
plants ?
(a) parenchyma
(b) collenchyma
(c) xylem
(d) sclerenchyma
6.Father of histology is
(a) Malpighi
(b) Bichat
(c) Mayer
(d) none of them
7.Cardiac muscle fibres are
(a) branched
(b) striated
(c) involuntary
(d) all the above
8.Ligament connects a bone with
(a) skin
(b) muscle
(c) bone
(d) both (b) and (c)
9. How much energy does a 100 W electric bulb transfer in 1 minute ?
(a) 100 J
(b) 600 J
(c) 3600 J
(d) 6000 J
10. Sound travels in air :
(a) if particles of medium travel from one place to another
(b) if there is no moisture in the atmosphere
(c) if disturbance moves
(d) if both, particles as well as disturbance move from one place to another
11.An object is thrown vertically upwards with a velocity u, the greatest height h to which it will rise
before
falling back is given by :
(a) u/g
(b) u2/2g
(c) u2/g
(d) u/2g
12. Which of the following is not an element ?
(a) graphite
(b) germanium
(c) silica
(d) silicon
13. One of the following is a solid foam. This one is :
(a) butter
(b) bread
(c) shaving cream
(d) ruby
14.Two elements X and Y have valencies of 5 and 3, and 3 and 2, respectively. The elements X and
Y are most
likely to be respectively :
(a) copper and sulphur
(b) sulphur and iron
(c) phosphorus and nitrogen
(d) nitrogen and iron
15. Which of the following pair of elements represents a mole ratio of 1 : 1 ?
(a) 10 g of calcium and 12 g of magnesium
(b) 12 g of magnesium and 6 g of carbon
(c) 12 g of carbon and 20 g of calcium
(d) 20 g of sodium and 20 g of calcium
16. If 32 g of sulphur has x atoms, then the number of atoms in 32 g of oxygen will be :
(a) x/2
(b) 2x
(c) x
(d) 4x
17. Which of the following represents a correct chemical formula ?
(a) CaCl
(b) Na3N
(c) NaSO4
(d) NaS
18. If the number of electrons in an ion Z3– is 10, the atomic number of element Z will be :
(a) 7
(b) 5
(c) 10
(d) 8
19.According to one of the Kepler’s laws of planetary motion :
(a) r2 directly proportional T3
(b) r directly proportional T2
(c) r3 directly proportional T2
(d) r3 directly proportional 1/t2
20. The commercial unit of energy is :
(a) watt
(b) watt-hour
(c) kilowatt-hour
(d) kilowatt
Section B
21. The power output of an engine is 3 kW. How much work does the engine do in 20 s ?
22.Five electric fans of 120 watts each are used for 4 hours. Calculate the electrical energy
consumed in kilowatt-
hours.
23. Give two reasons for supposing that water is a compound and not a mixture.
24.Define a compound. Give two points of evidence to show that sodium chloride is a compound.
25. Mention differences between light microscope and electron
microscope.
26. In which type of plants arenchyma is found? Give example.
Section C
27. What are tissues ? Give importance of tissue.
28. Write down about location, structure and functions of
parenchyma.
29.What is muscular tissue? Describe structure and function of
striated muscle fibres
30. Define the term ‘latent heat of fusion’ of a solid. How much is the latent heat of fusion of ice ?
31. State the main points of difference between homogeneous and heterogeneous mixtures.
32. When 5 g of calcium is burnt in 2 g of oxygen, then 7 g of calcium oxide is produced. What
mass of calcium
oxide will be produced when 5 g of calcium is burnt in 20 g of oxygen ? Which law of chemical
combination
will govern your answer ?
33. A ball is thrown up with a speed of 15 m/s. How high will it go before it begins to
fall ? (g = 9.8 m/s2)
Section D
34. A cricket ball is dropped from a height of 20 metres.
(a) Calculate the speed of the ball when it hits the ground.
(b) Calculate the time it takes to fall through this height. (g = 10 m/s2)
35. (a) State the various postulates of Dalton’s atomic theory of matter.
(b) Which postulate of Dalton’s atomic theory can explain the law of conservation of mass ?
(c) Which postulate of Dalton’s atomic theory can explain the law of constant proportions ?
36.(a) State the type and functions of all muscle tissue
(b) what is epithelium tissue?
Section E
37. While walking through garden, Kapil plucked the tips of some
flowering plants. Gardner saw him doing this and persuaded him
not to do so as it is not good for plant growth.
(i) What happens to the plants if their tips are removed ?
(ii) What are meristems ?
(iii) How meristems are classified ?
(iv) What value was displayed by the gardner
38. Three mixtures A, B and C are obtained by stirring three different solids in water taken in
separate beakers.
When mixture A is allowed to stand for some time, then its particles settle at the bottom of the
beaker. When
a beam of light is passed through mixture A in a dark room, the path of light becomes visible when
observed
from the side of the beaker. When mixture B is allowed to stand for a considerable time, even then
its
particles do not settle down. Mixture B, however, scatters the beam of light just like mixture A. The
particles
of mixture C do not settle down on keeping and it also does not scatter a beam of light passing
through it.
(a) What are the mixtures like A known as ?
(b) What are the mixtures like B known as ?
(c) What are the mixtures like C known as ?
(d) Name the phenomenon exhibited by A and B which occurs on passing a beam of light through
them.
(e) Name one mixture each which is like (i) A (ii) B, and (iii) C.
39. A boy tries to push a truck parked on the roadside. The truck does not move at all. Another boy
pushes a
bicycle. The bicycle moves through a certain distance. In which case was the work done more : on
the truck
or on the bicycle ? Give a reason to support your answer.
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