1. Match the following:
List-I
1. Combustion
2. Fuel
3. Ignition temperature
4. Inflammable substances

List-II
i. The substance has a very low ignition temperature and gets easily catches fire with flame.
ii. The lowest temperature at which a substance catches fire.
iii. The substance that undergoes combustible.
iv. A chemical process in which substances react with oxygen to give off heat.
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2. Who discover the Penicillin antibiotics

3. Rayon is different from synthetic fibers because

4. Match the following
List-I( Microorganism)
1. Viruses
2. Bacteria
3. Protozoa
4. Bacterium, Lactobacillus

List-II( Diseases)
i. Dysentery and Malaria
ii. Cold, influenza, flu, cough, polio, chickenpox.
iii. Typhoid and Tuberculosis(TB)
iv. Curd
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5. Match the following:
List-I
1. Inexhaustible Natural resources
2. Exhaustible Natural resources
3. Fossil Fuels
4. Carbonisation

List-II
i. Coal, Petroleum
ii. Air, sunlight
iii. conversion of dead vegetation into coal.
iv. Dead remains of the living organism.
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6. Which of the following statements is not correct

7. Angle of incidence is equal to the angle of reflection

8. Which of the following statements is not correct

9. Which of the following can be beaten into thin sheets?

10. A tadpole develops into an adult frog by the process of

11. Adolescents should be careful about what they eat, because

12. The following is an antibiotic

13. Match the following:
List-I
1. Coke
2. Coal Tar
3. Coal Gas
4. Petroleum

List-II
i. Rock oil
ii. obtained during the processing of coal to get a coke.
iii. input materials for synthetic dyes, drugs, explosives, perfumes.
iv. Almost purest form of carbon; used in the manufacturing of steel.
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14. Which of the following statements is not correct

15. Internal fertilization occurs

16. The right meal for adolescents consists of

17. Sound can travel through

18. Match the following:
List-I
1. Female Anopheles
2. Female Aedes
3. Hepatitis A
4. Malaria
List-II
i. Dengue Virus
ii. Malaria Parasite
iii. Protozoa
iv. Virus
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19. Carrier of malaria-causing protozoan is

20. Which of the following statements is correct

21. Match the following:
List-I
1. Rapid Combustion
2. Spontaneous combustion
3. Explosion
4. Calorific value

List-II
i.The amount of heat energy produced on complete combustion of 1 kg of a fuel
ii. A large amount of gas formed in the reaction is liberated. the sudden reaction takes place with the
evolution of heat, light, and sound.
iii. material suddenly bursts into flames, without the application of any apparent cause.
iv. the gas burns rapidly and produces heat and light
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22. The bread or idli dough rises because of

23. Which one of the following is not an advantage of Manure

24. Match the following:
List-I
1. Metamorphosis
2. Asexual reproduction
3. Cloning
4. Embryo

List-II
i. The production of an exact copy of a cell.
ii. Developed by repeatedly divides of Zygote.
iii. Budding.
iv. The transformation of the larva into an adult through drastic changes.
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25. Match the following.
List-I
1. Manure
2. Fertilizer
3. Crop rotation
4. Rhizobium
List-II
i. Organic substances obtained from decomposition of plants and animal waste.
ii. Chemicals which are rich in particular nutrients; produced in factories.
iii. Method of replenishing the soil with nutrients.
iv. Bacteria
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