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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.
Which one of the following is not a Rabi crop?
(a) Wheat (b) Mustard (c) Pea (d) Paddy
1
2.
Which microorganism contains chlorophyll?
(a) Virus (b) Fungus (c) Algae (d) All of these
1
3.
Which fibre is used as artificial wool?
(a) Acrylic (b) Rayon (c) Nylon (d) Cotton
1
4.
Metals react with acids to produce:
(a) CO₂ gas (b) O₂ gas (c) H₂ gas (d) N₂ gas
1
5.
Petroleum is mainly a mixture of:
(a) Hydrocarbons (b) Alcohols (c) Water and oil (d) None of these
1
6.
Fuel value (Calorific value) is expressed in:
(a) kJ (b) kJ/kg (c) kg/kJ (d) Watt
1
7.
Part of the earth which supports life is known as:
(a) Atmosphere (b) Lithosphere (c) Biosphere (d) Hydrosphere
1
8.
Chromosomes are found in:
(a) Nucleus (b) Nucleolus (c) Cytoplasm (d) Vacuole
1
9.
IVF stands for:
(a) In Variable Force (b) In Vitro Fertilization (c) In Vivo Fertilization (d) Internal Void Fertilization
1
10.
Pancreas secretes:
(a) Insulin (b) Thyroxine (c) Adrenaline (d) Growth hormone
1
11.
Friction is a:
(a) Contact force (b) Non-contact force (c) Magnetic force (d) None of these
1
12.
The hearing range of human ear is:
(a) 20 Hz to 20,000 Hz (b) Less than 20 Hz (c) More than 20,000 Hz (d) 20 Hz to 25,000 Hz
1
13.
Which liquid conducts electricity?
(a) Distilled water (b) Lemon Juice (c) Alcohol (d) Kerosene
1
14.
The magnitude of an earthquake is measured on:
(a) Richter Scale (b) Kelvin Scale (c) Decibel Scale (d) Meter Scale
1
15.
Beam of light striking the reflecting surface is called:
(a) Reflected ray (b) Incident ray (c) Refracted ray (d) Normal ray
1
16.
Unwanted sound is called:
(a) Music (b) Noise (c) Tone (d) Note
1
17.
Combustion is a chemical reaction in which a substance reacts with:
(a) Hydrogen (b) Nitrogen (c) Oxygen (d) Chlorine
1
18.
Atmospheric pressure:
(a) Increases with altitude (b) Decreases with altitude (c) Remains constant (d) First increases then decreases
1
19.
Which of the following is used in the production of alcohol?
(a) Yeast (b) Rhizopus (c) Lactobacillus (d) Molds
1
20.
Friction is due to:
(a) Smoothness of surfaces (b) Irregularities of surfaces (c) Hardness of surfaces (d) Distance between surfaces
1
SECTION B (12 MARKS)
21.
Why is sodium metal kept immersed in kerosene?
2
22.
Name two objects other than planets which are members of the solar system. (Note: Though user syllabus didn't mention 'Stars and Solar System', 'Some Natural Phenomena' often overlaps or it's basic knowledge. Sticking to safer options: Comets/Meteors. Or better, alternative Q).
Revised Q: What is lightning? How does it occur?
2
23.
State the difference between audible and inaudible sound.
2
24.
Give reason: Rolling friction is lesser than sliding friction.
2
25.
Differentiate between Zygote and Foetus.
OR
What is metamorphosis? Give examples.
2
26.
What are antibiotics? Precautions to be taken while taking antibiotics.
2
SECTION C (21 MARKS)
27.
Explain why plastic containers are favoured for storing food. (Or based on user syllabus: Explain the process of formation of coal).
Revised Q: Describe how coal is formed from dead vegetation. What is this process called?
3
28.
List the conditions necessary for combustion.
3
29.
What are the advantages of modern methods of irrigation over traditional methods? Name two modern methods.
3
30.
Draw a sketch of Human Eye and label its parts.
OR
What is the function of: (a) Iris (b) Retina (c) Ciliary muscles
3
31.
Identify the part which vibrates to produce sound in: (a) Dholak (b) Sitar (c) Flute.
3
32.
Explain why a charged balloon is repelled by another charged balloon whereas an uncharged balloon is attracted by another charged balloon.
3
33.
Describe the threat to the beauty of the Taj Mahal.
3
SECTION D (15 MARKS)
34.
(a) State the difference between Menarche and Menopause.
(b) What determines the sex of the baby in humans? Explain with a diagram.
OR
(a) Define Adolescence.
(b) List the secondary sexual characters in boys and girls.
5
35.
(a) Explain the term force with examples.
(b) A rocket has been fired upwards to launch a satellite in its orbit. Name the two forces acting on the rocket immediately after leaving the launching pad.
5
36.
(a) Why do we sprinkle powder on a carrom board?
(b) Explain why sportsmen use shoes with spikes.
(c) Friction is a necessary evil. Comment.
5
SECTION E: CASE BASED QUESTIONS (12 MARKS)
37.
Case Study 1: Eye Care
The eye is a vital organ. It is important to take care of eyes. If there is any problem, one should go to an eye specialist. Neglect can cause blindness. Vitamin A is essential for eyes.
Based on the above information, answer the following:
(i) Name the food sources rich in Vitamin A. (1)
(ii) Name the disease caused due to deficiency of Vitamin A. (1)
(iii) Suggest two ways to take care of your eyes. (2)
4
38.
Case Study 2: Combustion
Fire is caused by combustion. To control fire, we need to remove one or more conditions of combustion. Firefighters use water to extinguish fire, but water cannot be used for all types of fires.
Based on the above information, answer the following:
(i) Why is water not used to control fires involving electrical equipment? (1)
(ii) Which gas is the best extinguisher for electric and oil fires? (1)
(iii) How does a blanket help in extinguishing fire on a person's clothes? (2)
4
39.
Case Study 3: Reproduction
Reproduction is essential for the continuation of a species. It can be of two types: sexual and asexual. In animals like Hydra, new individuals develop from buds.
Based on the above information, answer the following:
(i) Name the mode of reproduction in Hydra. (1)
(ii) What is a clone? (1)
(iii) How is budding different from binary fission? (2)
4
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