Class 7 Question Paper 2024 Science (with Answers)

ANNUAL EXAMINATION

Question Paper
2024

NCERT BASED SYLLABUS
FOR CBSE AND STATE BOARD
FOLLOWING NCERT

Annual Exam Question Paper 2024

SESSION ENDING EXAMINATION-(2023-24)
CLASS- VII
SUBJECT- SCIENCE
M.M.- 60 TIME- 2 HR 30 MIN.

General Instructions-:
1. Section A comprises of question numbers 1 to 8. These are MCQ carrying one mark each.
You have to select one most appropriate response out of the four provided options.
2. Section B comprises question numbers 9 to 13. These are VSAQs carrying two marks
each.
3. Section C comprises question numbers 14 to 17. These are SAQs carrying three marks
each.
4. Section D comprises question numbers 18 to 20. These are LAQs carrying five marks
each.
5. Section E comprises question numbers 21 to 23. These are CCTQs carrying five marks
each

Section A (1x8=8)
(1) The green pigment that is present in the leaves are called
(a) Haemoglobin (b) Globulin
(c) Albumin (d) Chlorophyll

(2) Mature ovule forms
(a) Buds (b) Endosperm
(c) Fruit (d) Seed

(3) Which one of the following contains haemoglobin?
(a) RBC (b) WBC
(c) Platelets (d) None of these

(4)

Which of the following phenomenon is represented by the above diagram
(a) pollination b)Fertilization
(c)Spore Formation d) Budding

(5) A bus travels 54 km in 90 minutes. The speed of the bus is
(a) 0.6 m/s (b) 10 m/s

(c) 5.4 m/s (d) 3.6 m/s

(6) Which of the following is used as a side view mirror?
(a) Plane mirror (b) Concave mirror
(c) Convex mirror (d) Convex lens

(7) Which of the following is not a source of wastewater?
(a) Sewers (b) Homes
(c) Industries (d) Hospitals

(8) Which one of the following is a quality of wastewater?
(a) Foul smell (b) Bad taste
(c) Dirty look (d) All of these

Section B (2X5=10)
9. In a plant, photosynthesis occurs in a part other than leaf. Name that plant and the part
where photosynthesis occurs.
Or

a) Identify the given plant.
b) Which type of mode of nutrition it follows?

10. A simple pendulum takes 32 s to complete 20 oscillations. What is the time period of the
pendulum?

11. Fig.14.22 shows four cells fixed on a board. Draw lines to indicate how you will connect
their terminals with wires to make a battery of four cells.

12. Why should oils and fats be not released in the drain? Explain.

13. …………………….. And ……………............ are by products of waste water treatment

Section C

(4x3=12)
14. Autotrophs and heterotrophs are two different organisms with distinct modes of nutrition
state. How are they different from each other?

15. Explain the following.
(a) Lime water turns milky on passing carbon dioxide gas through it.

(b) Bubbles are produced when acetic acid is added to a solution of sodium hydrogen
carbonate.
Or
(a)Explain why rusting of iron objects is faster in coastal areas than in deserts?
(b)How do we prevent iron articles from rusting?

16. Which type of change takes place in the following and state whether the energy is evolved
or absorbed during the change?
Burning of a candle, lightning of a bulb, preparation of food by green plants, volcanic eruption,
evaporation of petrol, burning of LPG.

17. List three products we get from forests.

Section D (5X3=15)
18. (a) Draw a diagram of the human excretory system and label any 4 parts.
(2.5)
(b) Sketch the reproductive parts of a flower.
(2.5)

19. (a)Do you think an electromagnet can be used for separating plastic bags from a garbage
heap? Explain.
(2)
(b) An electrician is carrying out some repairs in your house. He wants to replace a fuse
with a piece of wire. Would you agree? Give reasons for your response.
(3)

20. (a) State the characteristics of the image formed by a plane mirror
(2)
(b)Which type of mirror can form a real image? (1)
(c) Fill in the blanks. (2)
(i) An image formed by a concave ___________ cannot be obtained on a screen.
(ii) The inner surface of spoon act like a …………………….. mirror.

Section E (5X3=15)
21. Priya’s grandfather was taken to the hospital as he was unable to perform excretory
processes. Priya heard a nurse talking to her father that her grandfather’s has kidney failure
and needs to undergo dialysis. Priya later asked her father as to what dialysis process is and
why grandpa does needs it. Her father smiles and tells her all the facts associated with this
process.
(a) What do you mean by dialysis?
(b) Why is there a need for dialysis in some people?
(c) Excretion is an important life process. How?
(d) Which is the major excretory organ in humans?
(e) Which part of excretory system stores urine?
22. Paheli reminded Prof Ahmad that he had not explained why forests are called

Green lungs. Prof Ahmad explained that plants release oxygen through the process of
photosynthesis. The plants help to provide oxygen for animal respiration. They also maintain
the balance of oxygen and carbon dioxide in the atmosphere. That is why forests are called
lungs. The children saw clouds forming in the sky. Trees take in water from their roots and
release water vapour into the air through evaporation.
If there were fewer trees, how will the water cycle be affected?Tibu told them that the forest is
not just home to plants and animals. Many people also live in the forest. Some of them may

belong to different tribes. Tibuexplained that these people depend mostly on the forests. The
forest provides them with food, shelter, water and medicines. They have traditional knowledge
about many medicinal plants in the forest.

(1) Plants release oxygen through which process?
(a) Metabolism (b) Catabolism
(c) Anabolism (d) Photosynthesis
(2) The children saw………………………………………………………………………forming in the sky.
(a) Animal (b) Cow
(c) Bird (d) Cloud
(3) Trees take in water through……………………………………………….……..and release it to
environment in the form of………………………..……………………………………………..
(a) Roots, vapours (b) Shoot, vapours
(c) Stem, water (d) Leaves, gas
(4) What did Paheli reminded Professor Ahmed?
(5) What does the forest provide to humans?

23. The smallest time interval that can be measured with commonly available clocks and
watches is one second. However now special clocks are available that can measure time
intervals smaller than a second. Some of these can measure time intervals as small as one
millionth or even one billionth of a second.
1. A micro-second is a very small time interval. It is equal to
(a) one thousandth of a second (b) one hundredth of a second
(c) one millionth of a second (d) one billionth of a second
2. The time measuring devices used in sports can measure time intervals of
(a) a milli second (b) a micro second
(c) a nano second (d) None of these
3. Which of the following will be needed to measure the time period of a pendulum?
(a) a stop watch (b) a table clock
(c) a wrist watch (d) Any one of these
4. The clocks and watches which are used for measuring time are based on
(a) rectilinear motion (b) circular motion
(c) periodic motion (d) rotational motion
5. The most well known periodic motion is that of
(a) sundial (b) stop watch
(c) simple pendulum (d) sand clock

SESSION ENDING EXAMINATION-(2023-24)
MARKING SCHEME
CLASS- VII
SUBJECT- SCIENCE
SECTION-A
1. (d) Chlorophyll
2. (d) Seed

3. (a) RBC
4. (a) Pollination
5. (b) 10 m/s
6. (c) Convex mirror
7. (a) Sewers
8. (d) All of these
SECTION-B
9. Cactus, the part where photosynthesis occurs are stem and branches which are green. 1+1
OR
a)Pitcher plant ,b)Insectivorous plant
TIME PERIOD= TIME TAKEN/ NO, OF OSCILLATION
= 32/20=1.6 s

11.

12. Oils and fats should not be released in drains because they harden the soil in the pipes and
block them. Fats get clogged in holes of the soil in the drain and block it. It does not allow the
water to flow. ( 2)
13. Sludge and biogas 1+1
SECTION-C
14. Any three differences ( 3 marks)
15. (a) The reaction between lime water and carbon dioxide gas is a chemical change because a
new substance calcium carbonate is formed during this change. The turning of lime water into
milky is a standard test of carbon dioxide. (1.5)
(b) When baking soda (sodium hydrogen carbonate) and vinegar (acetic acid) are mixed
together, then a chemical change takes place between sodium hydrogen carbonate and acetic

acid to form three new substances.
The change in the test tube is as follows: (1.5)

Or
(a) Presence of moisture in coastal areas
(b) oiling,painting (any two)
16. (a) Burning of a candle Chemical change as well as physical change and energy evolved.
(b) Lightning of a bulb Physical change, energy evolved.
(c) Preparation of food by green plants Chemical change, energy absorbed.
(d) Volcanic eruption Chemical change, energy evolved.
(e) Evaporation of petrol Physical change as no new chemical substance is formed, energy
absorbed.
(f) Burning of LPG Chemical change because LPG on burning form CO2 and H2O, energy
absorbed.
17. any three

SECTION-D
18. (a) and (b) Correct figure and naming (5)
19. (a) No, because plastic does not have the magnetic property to get attracted to a magnet;
hence magnet cannot be used to separate plastic bags. (2)
(b) It is not a wise idea to replace the fuse with a piece of wire, as it has a very low melting point.
In the case of the metal piece, the melting point will be high, and the circuit will be intact in case
there is overload or overheating. (3)
20.(a) any two characteristics. (2)
(b) concave (1)
(c) (i) lens (ii) Concave (1+1)
SECTION-E
21. (a) Dialysis is the process used for cleaning of the blood by separating the waste products in
an artificial medium.(1)
(b) Dialysis is needed when the excretory organ of humans, i.e. kidney becomes damaged on
unfunctional due to some injury or infection.(1)
(c) Excretion process removes the waste products released in body after the utilisation of food
and other components. These products are toxic and may harm us if not removed from our
body.(1)
(d) Kidney(1)
(e Bladder .(1)
22. (1)(d) Photosynthesis (2) (d) Cloud (3) (a) Roots, vapours
(4) Answer: Paheli reminded Professor Ahmad that he had not yet explained why forest is
called the green lungs.
(5) Answer: The forest provides food, shelter and medicines to humans.

23. (1) c (2) d (3) d (4) c (5) c

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