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## SCIENCE TEST CLASS VIII NCERT on Friction

### SCIENCE TEST CLASS VIII

TIME: – 1HR                                                                                                    F.M.:- 50

`              TOPICS: - Friction,  Microorganisms: Friend and Foe                                   `

### Q1. Each question carries 1mark.

1. a. Microorganisms are classified into four major groups. Name
2. Several diseases like tuberculosis, smallpox and hepatitis can be prevented by
3. Define Friction
4. Friction depends on the ?
5. Give two ways to increase friction?
6. What is atmospheric pressure?

### Q2. Each question carries 2marks.

1. Write short notes on   A. Protozoa            B. Algae
2. Define the process of fermentation and its
3. Write short notes on medicinal use of
4. Find the net force acting on an object whose mass is 2 kg, as shown

5. Explain why sliding friction is less than static

### Q3. Each question carries 3marks.

1. What are the major precautions one should follow while taking antibiotics?
2. Explain how microbes are useful to us in our day to day
3. Explain increasing and reducing
4. Write and explain the effect of forces.
5. What is fluid friction? Write the factors on which fluid friction
6. Explain why objects moving in fluids must have special

### Q4. Each question carries 5marks.

1. What are the major group of microorganisms explain each group with their harmful and useful effects in our life?   5
2. Write and explain types of Forces ? 3
Find the Force in dyne acting on a body of mass 10 kg and an acceleration of 8m/s2 3
3. Explain the reason. 2+1+1+1
a.  Force of friction increases when two surfaces are pressed
b. While travelling on a rickshaw, you might have experienced that if the seat cover is very smooth, you tend to slip when brakes are applied
c. The handle of a cricket bat or a badminton racquet is usually
d. Give examples to show that friction is both a friend and Foe?
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## Test on Gravitation for Class 9th Physics

Topic Gravitation

Full Marks 30

1. What is gravitation ? 1
2. Write and mathematically explain the universal law of gravitation? 2
3. Write the keplers law of planetary motion? 2
4. What is free fall? 1
5. Calculate the force of gravitation due to the earth on a ball of 1kg mass lying on the ground. 3
(Mass of the earth =6*1024 kg.     radius of the earth = 6.4*103 km. ,G=6.7*1011Nm2/kg2)

Free Test on Motion For Class 9th Physics

1. Write the Archimedes principle ? 1
2. Write the difference between Mass and Weight . 3
3. What is Relative Density? 1
4. Why is it difficult to hold a school bag having a thin and strong strip?  1
5. A stone is allowed to fall from the top of tower 100 m high and at rhe same time another stone is projected vertically upwards from the ground with a velocity of 25m/s . calculate when and where the two stones will meet.  3
6. The weight of Shivanee is 500 N on the Earth. Calculate her mass on the moon? 2
7. How does a boat float in water? 1
8. What is buoyancy? 1

Kepler’s Laws of Planetary Motion ,Free Fall and Acceleration Due to Gravity

1. What is the acceleration due to gravity at a height equal to R/2 from the earth surface? 1
2. The relative density of silver is 10.8 . Calculate the density of silver?  2
3. Gravitational force acts on all objects in proportion to their masses . Why then a heavy object does not fall faster than a lighter object? 2
4. A ball is thrown up vertically returns to the thrower after 6 sec. 3
5. What is the velocity with which it was thrown up?
6. The maximum height it reached?
7. Its position after 4 second?

NCERT Solutions Class 9 Science Force and Laws of Motion

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## Test on Mediaval India For Class 7th NCERT

Before Attempting the Test Read the notes of this Topic Here

1. Mediaeval period of indian history Started from which century? 1
2. Who wrote the epic Rajatarngini? 1
3. Gulvadan Begum wrote which Book? 1
4. Who wrote Prithviraj raso? What does it tell about? 1
5. How India got its name Hindustan? 2
6. Name few rulers of early Medieval Period? 2
7. India’s geographical location has had an important role in shaping its history. Discuss? 2
8. How is travelogue an important literary source? 3
9. How Archaeological sources help in tracing the history? 3
10. India’s long coast line has been great advantage to the country. Why? 3
11. How have coins and inscriptions contributed to our knowledge of history? 3
12. What were the main changes that took places during the mediaeval period? 4
13. Write a note on sources from which we derive the past of Medievel India? 4

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## Sample Test on Force and laws of Motion

1. Write the Newton’s first law of motion? 1
2. Explain why some of the leaves may get detached from a tree when w vigorously shake the branch. 1
3. What is the momentum of an object of mass m, moving with a velocity v? 1
4. Why is it advised to tie the luggage kept on the roof of a bus with a rope. 1
5. Why a fielder a pulls his hands gradually with the moving ball while holding a catch. 1
6. What is Inertia? 1
7. Write the effects of forces? 2
8. What is the thrust needed to fire a 350 kg rocket straight up with an acceleration of 8m/s2 2
9. Mathematically prove the law of conservation of momentum?  3
10. A constant force acts on an object of mass 5 kg for a duration of 2 s. It increases the object’s velocity from 3 m s–1 to 7 m s-1. Find the magnitude of the applied force. Now, if the force was applied for a duration of 5 s, what would be the final velocity of the object?   3
11. A stone of 1 kg is thrown with a velocity of 20 m s–1 across the frozen surface of a lake and comes to rest after travelling a distance of 50 m. What is the force of friction between the stone and the ice?       3
12. An automobile vehicle has a mass of 1500 kg. What must be the force between the vehicle and road if the vehicle is to be stopped with a negative acceleration of 1.7 m s–2  ?   3
13. From a rifle of mass 4 kg, a bullet of mass 50 g is fired with an initial velocity of 35 m s–1 . Calculate the initial recoil velocity of the rifle      3

Find NCERT Solutions on this Topic here

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## Test on Class 9th Biology on Fundamental Unit of Life:CELL

### Test on Biology For Class 9th SCIENCE

#### Topic- The Fundamental unit of Life :CELL

1. How do substance like CO2 and water move in out of the cell? 2
2. Why is plasma membrane is called selective permeable membrane?    1
3. Write the difference between animal cell and plant cell? 3
4. Why is lysosome is called suicide bags of the cell? 2
5. Draw a neat labelled diagram of Animal cell and label different parts of it? 4
6. Write down the main function of Endoplasmic Reticulum and Lysosomes? 3
7. Write a short note on Mitochondria? 2
8. What is a tissue? 1
9. What are the function of stomata? 2
10. Differentiate between Sclerenchyma and Parenchyma? 3
11. Write the difference between Meristematic tissue and permanent tissue? 3
12. What is chlorenchyma? 1
13. Differentiate between Rough ER and Smooth ER? 2
14. Name two organelle that has their own genetic material? 1

Free Sample Test For Class 9 th Social Science 2019

The Fundamental Unit of Life NCERT Solutions

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## Free Test on Motion For Class 9th Physics

### Test 2 on Physics .    Class 9th  Topic – Motion.

1. Distinguish between speed and velocity?
2. What is acceleration?
3. Graphically prove the first equation of motion?
4. Graphically prove the second equation of motion?
5. Graphically prove the third equation of motion?
6. What is nature if speed time graph for uniform and non uniform motion?
7. The brakes applied to a car produce acceleration of 6m/s2 in the opposite direction to the motion. If the car takes 2seconds to stop after the application of brake. Calculate the distance it travels during this time?
8. A bus starting from rest moves with a uniform acceleration of 0.1m/s-2 for 2 minutes . find the speed acquired b. The distance travelled?
9. A trolley going down an inclined plane has an acceleration of of 2cm/s2. What will be its velocity 3s after the start?
10. A stone is thrown vertically upwards with a velocity of 5m/s. If the acceleration of the stone during its motion is 10m/s2 in the downward direction . what will be the height attained by the stone and how much time it will take to reach there?
11. A ball gently dropped from a height of 20m. If its velocity increases uniformly at the 10m/s 2. With what velocity it will strike the ground? after what time will nit strike the ground?
12. What is uniform circular motion?
13. An artificial satellite is moving with a circular orbit of radius 42250 km. Calculate its speed if it takes 24 hours to revolve around the earth?

Motion Lesson For Class 9th

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## Sample Test On Resources For Class 10th

### Social Science   F.M . 35

1. What is resource? 1
2. Classify and explain various types of Resources? 5
3. What is sustainable development? 1
4. What is Agenda 21? 2
5. Write a note on Regur Soil? 3
6. Write a note on Laterite Soil? 3
8. Write ways and method of Soil Conservation? 4
9. Differentiate between Localised and Ubiquitous resources? 2
10. What are biotic resources? 1
11. Gandhiji Said “ There is enough for everyone’s need but not enough for everyone’s greed “. Elaborate his quote?     3
12. Differentiate between Stock and Reserve? 2
13. What is Fallow Land? 1
14. What is cultivable waste land? 1
15. Write the names of different Types of soils and also write their locations where they are found in India?   3
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## Free Sample Test For Class 9 th Social Science 2019

Class 9th Social Science

Test-1

What is Democracy? Why Democracy 2. India-Size and Location

1. What is dictatorship? 1
2. What is Democracy? 1
3. Which country has the largest border attaching India? 1
4. Write the name of the latitude which divides India into two parts? 1
5. What is the length of Coast line of India? Also write the Area of India? 1
6. Which Strait passes between India and Srilanka? 1
7. Which southernmost point got submerged during the 2004 Tsunami? 1
8. What is degree of standard meridian of India? Why it was chosen as standard meridian? 2
9. How does opening of Suez Canal prove as a boon for our trade with European Countries? 2
10. Why indirect democracy is adopted in India? 2
11. Distinguish between direct democracy and indirect democracy? 3
12. Democracy allows people to correct their own mistakes ? Explain? 3
13. The sun rises two hours earlier in Arunachal Pradesh as compared to Gujarat in the west but the watches show the same time. How does this happen? 3
14. The Central Location of India at the head of Indian Ocean is considered of great significance. Why? 3
15. Describe the contribution of India’s contact with the oriental world? 3
16. Explain how India is benefited because of its long coast line? 3
17. Describe any five merits of Democracy? 4
18. Explain main challenges to democracy. Suggest remedies to face those challenges? 5
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## Science Test For Class 8th Metals and Non-metals

SCIENCE TEST – I

CLASS VIII

TIME: – 1.5HR                                          F.M.:- 50

#### Topic-Metals And Non Metals Force and PressureChemical Effect of Electric Current

Q1. Each question carries 1mark.

(i) Name some materials which are good conductors of electricity.

(ii) The path through which an electric current flows is called

1. Electric path b. Electric relay              c. Short circuit               d. Electric circuit

(iii) How chlorination is done to purify water?

(iv) Fuel must be heated to its_________________ before it starts burning.

(v) Name the gases involved in acid rain.

Q2. Each question carries 2marks.

(i) In an experiment 3.5 kg of a fuel was completely burnt. The heat produced was measures to be 160,000 kj. Calculate the calorific value of the fuel.

(ii) Explain why it is difficult to burn a heap of green leaves but we can easily burn dry leaves?

(iii) What do you mean by marble cancer?

(iv) How smog is harmful to us?

(v) It is said that rain water is as pure as distilled water, but once while testing rain water compass needle shows deflection, explain why?

Q3. Each question carries 3marks.

(i) Write short notes on greenhouse gases.

(ii) Explain the process of electroplating.

(iii) What do you mean by electrolysis and electrolytes?

(iv) Explain why the process of rusting can be called as slow combustion.

(v) Explain with an activity that air is necessary for combustion.

Q4. Each question carries 5marks.

(i) Explain the process of electroplating, along with its advantages and uses.

(ii) Clear transparent water is always fit for drinking, do you agree? Explain your answer.

(iii) Explain air pollution and its harmful effects. Also list some important measures to reduce air pollution.

(iv) Explain how combustion takes place in a matchstick.

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## SCIENCE TEST – IICLASS VIIITIME: – 1.5HR F.M.:- 50

#### TOPICS: – Reaching the age of Adolescence Reproduction in Animals Synthetic Fibres and Plastics.

Q1. Each question carries 1mark.

(i) What are exocrine glands?
(ii) Growth hormone is secreted by ________________ gland.
(iii) Which kind of capability does frog gain by transforming from tadpole to adult frog?
(iv) Give examples of some oviparous and viviparous animals.
(v) Cellulose is made up of large number of___________________ units.

Q2. Each question carries 2marks.

(i) What is the relation between adolescence and puberty?
(ii) Define secondary sexual characters.
(iii) Differentiate between zygote and foetus.
(iv) Why we prefer plastic containers for storage of items like water, milk, pickles, dry food? (v) Differentiate between natural and artificial fibres.

Q3. Each question carries 3marks.

(i) What is the cause of
A. Diabetes     B. Goitre        C. AIDS
(ii) Write short notes on
A. increase in height during puberty.
B. changes in body shape during puberty.
C. voice change at puberty.
(iii) Why frog lays egg coverless, whereas, Hen lays it with hard cover? Explain.
(iv) What are the advantages of artificial silk over natural silk? (v) State the source of following fibres
A. Cotton B. Rayon C. Nylon

Q4. Each question carries 5marks.

(i) A. Explain the process of sexual reproduction in human beings.
B. Name different stages of the lifecycle of a frog and silkworm.
(ii) Draw labeled diagram of male and female reproduction system.
(iii) What are synthetic fibres and its various types?
(iv) Explain secondary sexual characters and roles of hormones in initiating reproductive function.