Class 8 PT I Question Paper 2025-26 Science

PERIODIC TEST
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PERODIC TEST 1 (2025-26)
CLASS: VIII SUBJECT: SCIENCE
M.M: 40 Marks TIME: 90 min.
General Instructions:
All questions are compulsory.
This question paper contains four sections A, B, C, D and E. There are 22 questions in this question paper.
Section A has 7 Multiple choice questions (MCQ) carrying 1mark each.
Section B has 3 Very Short answer type questions carrying 2 marks each.
Section C has 3 Short answer type questions carrying 3 marks each.
Section D has 2 Long answer questions carrying 5 marks each.
Section E has 2 Case based questions carrying 4 marks each.
__________________________________________________________________________________

SECTION: A
1.​ Majority of cells cannot be seen directly with our naked eyes because:
(a) organisms are generally unicellular (b) cells are microscopic
(c) cells are present only inside the body (d) cells are grouped into tissues

2.​ Which one of the following term is not a part of the nucleus?
(a) ribosome (b) chromosome
(c) nucleolus (d) gene

3.​ The jelly-like fluid substance present in cells is called
(a) protoplasm (b) chloroplast
(c) chromosome (d) cytoplasm

4. Various materials which are obtained from nature are called natural resources. Which of the
following is not a natural resource?
(a) minerals (b) soil (c) water (d) plastic
5. Metals are generally hard. Which of the following metals is an exception and can be cut with a
knife?
(a) iron (b) gold
(c) sodium (d)magnesium

Following questions consist of two statements – Assertion (A) and Reason (R). Answer these
questions selecting the appropriate option given below:​
(a) Both A and R are true and R is the correct explanation of A​
(b) Both A and R are true but R is not the correct explanation of A.​
(c) A is true but R is false.​
(d) A is false but R is true

6. Assertion (A): Plant generally have a hard body unlike animal
Reason (R): Plant cell have cells wall made up of cellulose.

7. Assertion (A): All non-metals are poor conductor of electricity.
Reason (R): Graphite are good conductor of electricity.

SECTION: B
11. Fill in the blanks:
(i) The instrument used to observe cells is ________.
(ii) Cell organelle which help to perform photosynthesis is called ________________.

12. State whether following statement are True or False

(i) Sodium does not react with water at all.
(ii) ___________is the hardest known natural substance on earth and it is a _______(metal/
non metal)
14. Write four differences between Renewable and Non renewable resources along with examples.

SECTION: C
16. (i) Imagine that all the exhaustible natural resources are exhausted by human activities. Do you think
survival of living beings would be possible.? If yes, why?, If not, why not? [2]
(ii) Why petrol is exhaustible natural resource, whereas sunlight is not? Explain. [1]
17. (i) The name of the product formed in the reaction of magnesium and _____________ is magnesium
oxide. The magnesium oxide turns _____________ litmus paper to ____________. Generally oxides of
__________ are basic in nature. [2]
(ii) Name a metal which is liquid at normal temperature. [1]
18. (i) Why mitochondria is called as power house of cell?
(ii) Disease called polio, rabies, corona is caused by which category of microorganism?
(iii) Why does algae is considered as “Future food”?

SECTION: D
18. (i) Differentiate between Plant and animal cell. [3]

(ii) How can microorganism be helpful for us? [2]

19. Match the substances in Column A with their applications given in Column B.

SECTION: E
21. Read the passage and answer the following question.
In 1665, a scientist named Robert Hooke published a book called Micrographia. He was a
careful observer, and a skilled artist. In this book, he showed detailed drawings of tiny things that
people had never seen before—things he saw using a tool we now call a microscope. Around the
same time in 1660s, Antonie van Leeuwenhoek, a Dutch scientist, made better lenses that
allowed him to build more useful microscopes. He was the first person to clearly see and
describe tiny living things like bacteria and blood cells. Because of this, he is known as the
Father of Microbiology. The outer layer of cell is called the cell membrane. The round structure
in the middle is the nucleus, which is also covered by a thin membrane. The space between the
cell membrane and nucleus is filled with cytoplasm. These three—cell membrane, cytoplasm,
and nucleus — are the basic parts of a cell. Some cells, like onion peel cells, have an extra outer
layer called the cell wall.
(i)​ Who discovered first cell and when?
(ii)​ Who is known as father of microbiology?
(iii)​ According to above passage what is one difference between animal cell and onion
peel cell?
(iv)​ Why do cell of different part of body have different shape?

22. During a visit to their grandmother’s village, Bhoomi and Surya noticed clean air, fresh
water, and many trees. Ajji explained that these are nature’s treasures. She showed them how
to use water carefully while watering plants and collecting rainwater in a tank for later use.
(i)​ Name two natural resources mentioned in the passage.

(ii)​What is rainwater harvesting?
(iii)​Why is it important to use water carefully?
(iv)​Name one way by which you can save water.

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