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9th Class Science Sample Paper

Sample Paper - 2 Term - 1 Total Questions - 36

1)

What is latent heat of vaporization?
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2)

State Newton's second law of motion.
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3)

A student takes some water in a beaker and heats it over a flame for determining its boiling point. He keeps on taking its temperature readings. What does he observe regarding the temperature of water?
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4)

State whether evaporation is surface phenomenon or bulk phenomenon. Give reason.
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5)

What is the name given to the process when a substance in gaseous state changes directly into the solid state without going through liquid state and vice versa?
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6)

Ishita heated a mixture of iron fillings and sulphur in a test-tube for sometime till a greyish black product was formed. She cooled the test-tube and added few drops of carbon disulphide and shook it well. Which colour of the solution she found on shaking it?
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7)

To separate a mixture of sand, common salt, camphor and iron fillings, Ishu added some water to the mixture in a test-tube and shook it well. Which component will be dissolved water?
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8)

When magnesium ribbon is burnt in air, what will you observe?
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9)

A thermometer has 20 equal divisions between 90°C and 100°C marks. A student while determining the boiling point of water finds that the mercury thread becomes stationary at the 19th mark above 90°C. What should he record the boiling point of water?
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10)

What is the colour of pure ammonium chloride?
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11)

Name the organelle (i) Which digest unwanted organic substances. (ii) Which helps in protein synthesis.
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12)

When iodine solution is added to crushed potato sample, it develops blue-black colour. Why?
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13)

Define alloy. Why an alloy is considered as a mixture?
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14)

Why does a block of plastic released under water come up to the surface of water?
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15)

(i) What is the nature of work done by frictional force? (ii) What is the unit of the coefficient of limiting frictional between two surfaces in contact?
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16)

(i) How can ferrous supplied be formed? (ii) Which solvent is used to separate sculpture from iron fillings?
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17)

Differentiate between parenchyma and chlorenchyma.
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18)

Give reasons for the following. (i) Inner membrane of mitochondria is deeply folded. (ii) Mitochondria is called power house of cell. Why?
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19)

(i) What is evaporation? (ii) Name the factors on which evaporation depends.
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20)

Calculate the mass of sodium sulphate required to prepare its 40% (mass %) solution in 100 g of water.
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21)

Identify what do the graphs shows in the figure given below
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22)

A bullet fired from a gun is more dangerous than an air molecule hitting a person, through both bullet and air molecule have same velocity. Give reason.
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23)

A truck and a car both moving with velocity v, have a head on collision both of them come to rest after that. If the collision lasts for 10 s. (i) Which vehicle experiences the greater force of impact? (ii) Which vehicle experiences the greater change in momentum? (iii) Why is the car suffer more damage than the truck?
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24)

Differentiate between mass of an object and its weight.
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25)

If the earth attracts an apple, does the apple also attract the earth? If so, why does the earth not move towards the apple?
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26)

Name the following. (i) Tissue present in brain (ii) Tissue forms inner lining of mouth (iii) Tissue that present in skin (iv) Tissue that transport food in plants (v) Tissue that connect muscle to bone in humans (vi) Tissue present in lining of kidney tubule
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27)

Draw neat and well labelled diagram of prokaryotic cell.
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28)

(i) What is the function of blood? (ii) Name three types of blood cell and give their function.
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29)

What is crop rotation? Enumerate some difference between mixed cropping and inter cropping.
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30)

(i) Name the month during which kharif crop is grown. (ii) List any four factors, which crop variety improvement has done.
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31)

Iron fillings and sulphur were mixed together and divided into two parts, 'A' and 'B'. Part 'A' was heated strongly, while part 'B' was not. When dil. Hydrochloric acid was added to both the parts, evolution of gas was seen in both cases. How will you identify the gases evolved? OR During an experiment, the students were asked to prepare a 20% (m/m) solution of sugar in water. Meena dissolved 20 g of sugar in 100 g of water, while Rita dissolved 20 g of sugar in water to make 100 g of the solution. (i) Are the two solutions of the same concentration? (ii) Compare the mass per cent of the two solutions.
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32)

Taking one example, show the experiment of process of sublimation. OR (i) Define boiling point. (ii) Express the boiling point of water in Celsius as well as well as Kelvin scale. (iii) How will you show the presence of water vapors in air? (iv) Give the full forms of (a) LPG (b) CNG. (v) Why evaporation is called surface phenomenon?
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Draw the velocity-time graph from the data given below.

Time (in s)	2	4	6	8	10	12	14
Velocity (in m/s)	5	10	15	20	20	10	0

(i) What type of motion is represented by the object during 0-6 s? (ii) Calculate the acceleration in first 6 s. (iii) Calculate the distance travelled between 6-8 s. (iv) Calculate the retardation during 12-14 s. OR On a 100 km track, the train travels the first 30 km at a uniform speed of 30 km/h. How fast must the train travel the next 70 km so as to make average speed 40 km/h for the whole trip?

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