CBSE Class 7 Science Sample Paper Set A

CBSE Class 7 Science Sample Paper Set A. It’s always recommended to practice as many CBSE sample papers as possible before the examinations. The latest sample papers have been designed as per the latest blue prints, syllabus and examination trends. Sample papers should be practiced in examination condition at home or school and also show it to your teachers for checking or compare with the answers provided. Students can download the sample papers in pdf format free and score better marks in examinations. Refer to other links too for latest sample papers.

I Multiple choice questions :

1) Acid present in curd is ________

a) Acetic acid b) lactic acid c) citric acid d) hydrochloric acid

2) Dilute acids react with metals to form salt and ______ gas

a) H2 b) O2 c) CO2 d) none of these

3) An oxidation reaction involves

a) addition of oxygen b) addition of oxygen and removal of hydrogen

c) addition of hydrogen and removal of oxygen d) addition of hydrogen

4) An arrow pointing downwards in a chemical reaction shows

a) evolution of gas b) oxidation c) displacement d) formation of precipitate

5) In insects exchange of gases takes place through

a) Spiracles b) gills c) lungs d) stomata

6) In plants exchange of gases take place through

a) Buds b) roots c) entire leaf surface d) stomata

7) The loss of water through the stomata is called

a) Wilting b) transpiration c) translocation d) transportation

8) Forests are called green lungs because they supply __________ to the atmosphere

a) O2 b) CO2 c) N2 d) H2O

9) Plants do not depend on animals for

a) Pollination b) food c) seed dispersal d) nutrients

10) The first link in a food chain is

a) Herbivores b) carnivores c) green plants d) none of these

11) The lowest layer in the understory of a forest is formed by

a) Shrubs b) herbs c) trees d) tall grass

12) _________ are primary consumers

a) producers b) herbivores c) carnivores d) non green plants

13) The primary source of energy in nature is

a) O2 b) CO2 c) fuels d) sun

14) Rainwater harvesting is done

a) to conserve ground water b) to reduce irrigation c) for afforestation d) for industrialization

15) Which of the following cannot split light into its seven colours

a) diamond cut in a special way b) prism c) convex lens d) water droplets suspended in air

16) A magnifying lens is a

a) plane mirror b)concave lens c) convex lens d)none of these

17) A tornado is

a) a strong thunderstorm b) the eye of a cyclone

c) rotating funnel of a high speed wind d) a tsunami

18) As we go to higher altitudes the air pressure

a) Increases b) decreases c) remains same d) expands

19) Increased wind speed results in

a) reduced air pressure b) increased air pressure

c) air pressure doesn’t change d) expansion of air

20) A cyclone develops

a) over the land b) over the sea c) near the equator d) at poles

21) During a thunderstorm, water droplets and ice crystals collide and produce

a) Lightning b) rain c) cyclone d) wind

22) Yeast reproduces by

a) spore formation b) sexual reproduction c) vegetative reproduction d) budding

23) Which of the following is dispersed by water?

a) Lotus b) dandelion c) pea d) xanthium

24) The male and female reproductive cells are called

a) Zygote b) gametes c) pollination d) fertilization

25) A complete flower has

a) only stamens b) only pistil c) both stamens and pistil d) only petals and sepals

26) Fertilization means

a) fusion of male and female cells b) transfer of pollens from anther to stigma

c) carrying of seeds by wind and water d) explosion of fruits

27) Blood cells that protect our body from diseases are

a) RBC b) WBC c) platelets d) all of these

28) The heart has a number of__________ that allows the blood to flow in one direction only

a) Valves b) auricles c) ventricles d) septum

29) Which of these enable nutrients present in plants and animals to go back to the soil

a) Producers b) primary consumers c) secondary consumers d) decomposers

30) Lateral inversion is seen in a

a) Plane mirror b) convex mirror c) concave mirror d) lenses

Note: All the answers should be done on the answer sheet.

I Define and give one example : (1x6=6)

a) Indicators

b) Exothermic reactions

c) Anaerobic respiration

d) Translocation

e) Rectilinear propagation of light

f) Afforestation

II Write short answers in about 2-3 sentences : (1.5x8=12)

a) Give any 3 uses of hydrochloric acid.

b) Give any 3 uses of calcium hydroxide.

c) Why does a base applied to your skin give relief from an ant bite ?

d) What role does transpiration play in the transportation of water in a plant ?

e) A convex rear view mirror is preferred over a plane mirror in a car. Why ?

f) How does planting trees help ground water conservation ?

g) Why should we not over water potted plants ?

h) Why is reproduction important?

III Answer in 4-5 sentences of any 6 of the following : (2x6=12)

a) Give any four methods used to prevent rusting.

b) What is a displacement reaction? What rule governs the displacement of an element from a compound? Give an example

c) Why do we sometimes suffer from muscle cramps while exercising? How can you overcome the cramps?

d) What happens in a flower after fertilization?

e) What are the advantages of vegetative reproduction?

f) What are the reasons for the lowering of the water table in large cities?

g) Give any 4 methods used to conserve water.

IV Give any two differences between: (any 6) (2x6=12)

1) Acids and bases

2) Combustion and cellular respiration

3) Arteries and veins

4) Real and virtual image

5) Renewable and nonrenewable resources

6) Concave and convex mirror

7) Asexual and sexual reproduction

V Complete, balance and name the type of reaction: (2x5=10)

a) Mg + O2 →________________ ( ________________________ )

b) CaO + H2O →____________________(_____________________________)

c) NaOH + H2SO4 →_____________ + ______________ (________________________ )

d) Na2CO3 + HCl→___________ + __________ + _________ (___________)

e) Zn + HNO3 →_____________ +______________ (____________________)

VI 1) Draw a neat labeled diagram of the human urinary system

Please click the link below to download the full pdf file for CBSE Class 7 Science Sample Paper Set A.

Tags: 

 


Click to View or Download pdf file
Click for more Science Study Material

Latest NCERT & CBSE News

Read the latest news and announcements from NCERT and CBSE below. Important updates relating to your studies which will help you to keep yourself updated with latest happenings in school level education. Keep yourself updated with all latest news and also read articles from teachers which will help you to improve your studies, increase motivation level and promote faster learning

The CBSE Science Challenge 2020

The CBSE Science Challenge - 2020 Science is inexplicably linked with our lives and helps us to understand the world around us better. Scientific and technological developments contribute to progress and help improve our standards of living. By engaging with this...

BRICS International Online Mathematics Competition

BRICSMATH.COM is an annual International Online Competition in Mathematics, for students of classes I – XII of 07 BRICS countries (Brazil, Russia, India, China and South Africa, Indonesia and Vietnam). The competition is held online on the website www.bricsmath.com and...

Digital Marks Sheets Migration Certificates and Pass Certificates

CBSE pioneered in providing digital academic documents through its academic repository called “Parinam Manjusha” and DigiLocker.  As on now result data from 2004 till this year is available in the repository.  Approx. 12 crores digital academic documents are available...

Celebration of Republic Day by CBSE

As you are aware, Republic Day is celebrated every year on 26th January to honour the Constitution and Republic of our country. Celebration of this occasion annually helps youth and children of our country to be aware of the significance of Indian Constitution, unity...

How to Effectively Answer CBSE Board Examination Question Papers

The intend of this article is to share the best ways to answer the CBSE Board Examination. Usually most of the students tend to become nervous at the times of the board examination. In this article we will share the most effective ways to make the answers to the CBSE...

×
Studies Today