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VARDAAN LEARNING INSTITUTE

MOCK TEST SERIES - SCIENCE (2025-26)
CLASS: VIII SUBJECT: SCIENCE
TIME: 3 HOURS MAX. MARKS: 80
General Instructions:
  1. The question paper consists of 39 questions in 5 sections.
  2. All questions are compulsory. However, an internal choice is provided in some questions.
  3. Section A consists of 20 objective type questions carrying 1 mark each.
  4. Section B consists of 6 Very Short questions carrying 2 marks each.
  5. Section C consists of 7 Short Answer type questions carrying 3 marks each.
  6. Section D consists of 3 Long Answer type questions carrying 5 marks each.
  7. Section E consists of 3 Source-based/Case-based units of assessment of 4 marks each with sub-parts.
SECTION A (20 MARKS)
1.
Combine is a machine which is used for:
(a) Sowing (b) Harvesting and Threshing (c) Irrigation (d) Weeding
1
2.
Which of the following is an antibiotic?
(a) Sodium bicarbonate (b) Streptomycin (c) Alcohol (d) Yeast
1
3.
Like synthetic fibres, plastic is also a:
(a) Polymer (b) Monomer (c) Isomer (d) None of these
1
4.
The most ductile metal is:
(a) Silver (b) Gold (c) Copper (d) Aluminium
1
5.
Naphthalene balls are obtained from:
(a) Carbon (b) Coal tar (c) Coke (d) Coal gas
1
6.
The zone of a flame used by goldsmiths for melting gold and silver is:
(a) Innermost zone (b) Middle zone (c) Outermost zone (d) Luminous zone
1
7.
Power house of the cell is:
(a) Mitochondria (b) Nucleus (c) Cytoplasm (d) Vacuole
1
8.
The number of nuclei present in a zygote is:
(a) None (b) One (c) Two (d) Four
1
9.
The age of menopause in women is:
(a) 10-12 years (b) 18-20 years (c) 45-50 years (d) 60-70 years
1
10.
Goitre is a disease of:
(a) Thyroid gland (b) Pituitary gland (c) Adrenal gland (d) Pancreas
1
11.
To define a force we must know:
(a) Direction (b) Magnitude (c) Both (a) and (b) (d) None of these
1
12.
Rolling friction is ___________ sliding friction.
(a) Greater than (b) Less than (c) Equal to (d) None of these
1
13.
The voice box is also called:
(a) Stomach (b) Heart (c) Larynx (d) Mouth
1
14.
LED stands for:
(a) Light Emission Diode (b) Light Emitting Diode (c) Light Energy Diode (d) None of these
1
15.
During lightning, we should:
(a) Stand under a tree (b) Use an umbrella (c) Stay indoors (d) Lie on the ground
1
16.
The amount of light entering the eye is controlled by:
(a) Eye lens (b) Cornea (c) Iris (d) Ciliary muscle
1
17.
Which of the following is biodegradable?
(a) Plastic (b) Glass (c) Paper (d) Tin can
1
18.
In human eye, image is formed on the:
(a) Cornea (b) Pupil (c) Retina (d) Lens
1
19.
Force of friction always acts on moving objects in a direction:
(a) Same as motion (b) Opposite to motion (c) Perpendicular to motion (d) None of these
1
20.
Which planet is known as the red planet? (Wait, user syllabus didn't list solar system explicitly but previous test had it, staying safe, will use earthquake Q). When a glass rod is rubbed with silk, it acquires:
(a) Positive charge (b) Negative charge (c) Both (d) No charge
1
SECTION B (12 MARKS)
21.
Explain why plastic is used for making electric switches and plugs.
2
22.
Define atmospheric pressure.
2
23.
Why are the handles of cooking utensils made of thermosetting plastics?
2
24.
Give two examples of contact forces.
2
25.
State part of the ear which vibrates when sound enters our ear.
OR
Name the sound producing organ in human.
2
26.
Name the gas responsible for global warming. How is it produced?
2
SECTION C (21 MARKS)
27.
State the differences between Eukaryotic and Prokaryotic cells.
3
28.
Explain the process of fertilization in human beings.
3
29.
What is crop rotation? How is it helpful for soil?
3
30.
Describe an activity to show that liquid pressure increases with depth.
3
31.
Explain how noise pollution is harmful to humans.
3
32.
How many images of a candle will be formed if it is placed between two parallel plane mirrors separated by 40 cm? Explain.
3
33.
Mention three uses of gold and silver.
3
SECTION D (15 MARKS)
34.
(a) Draw a well labelled diagram of Animal cell.
(b) State the function of: (i) Nucleus (ii) Cell Membrane.
OR
(a) Differentiate between Plant cell and Animal cell (any 3 points).
(b) What are genes? Where are they found?
5
35.
(a) Describe the construction of a beautiful pattern making optical instrument (Kaleidoscope).
(b) State two uses of a Periscope.
5
36.
(a) Explain the term 'Food Preservation'.
(b) Name any two common preservatives.
(c) Explain the method of Pasteurization.
5
SECTION E: CASE BASED QUESTIONS (12 MARKS)
37.
Case Study 1: Sound Properties
The to and fro motion of an object is known as vibration. The number of oscillations per second is called the frequency of oscillation.
Based on the above information, answer the following:
(i) What is the unit of frequency? (1)
(ii) Define time period. (1)
(iii) If an object oscillates 20 times in one second, what is its frequency? (2)
4
38.
Case Study 2: Force
A force can change the state of motion or shape of an object. The force may be contact or non-contact.
Based on the above information, answer the following:
(i) Give an example of non-contact force. (1)
(ii) When we press a rubber ball, it changes shape. Which force is applied? (1)
(iii) A batsman hits a cricket ball. What happens to the ball? Explain in terms of force. (2)
4
39.
Case Study 3: Electroplating
Electroplating is one of the most common applications of chemical effects of electric current. It prevents corrosion and gives a shiny appearance.
Based on the above information, answer the following:
(i) Why are tin cans used for storing food made by electroplating tin into iron? (1)
(ii) Which metal is deposited on bridges and electric poles to prevent rusting? (1)
(iii) Explain why we should not put waste conducting solution in the drain. (2)
4
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