General Science Set 54 FAQs

1. The Avogadro constant, NA, is named in honour of:

2. Offspring that are not exactly like either parent are produced by:

3. The Earth rotates on its axis from:

4. In Spirogyra, reproduction takes place when the filament breaks up into smaller pieces that grow into new individuals. This is called:

5. The liquids generally used in laboratory thermometers are:

6. Which of the following changes cannot be reversed?

7. Which of the following is a source of Vitamin A?

8. If the absolute temperature of a perfect radiator is doubled, the energy radiated per unit time becomes ___ times.

9. In science, the purpose of separating a mixture is to obtain:

10. Penicillin, the first antibiotic, was discovered in 1928 by:

11. The region of a sound wave where the density of the medium is lower than the average density is called:

12. A reaction in which an element displaces another element from its compound is called a:

13. The flatworm studied to understand regeneration in animals is:

14. The absolute refractive index of a medium is the ratio of the speed of light in vacuum to the:

15. Selection of variants by environmental factors forms the basis of:

16. When fats and oils are oxidised, they become:

17. The image formed by a convex mirror, for any position of the object, is always:

18. The association of fungi with the roots of higher plants is called:

19. Consider the following pairs: (I) Ammeter – connected in series (II) Voltmeter – connected in parallel (III) Ammeter – connected in parallel Which of the pairs given above is/are correctly matched?

20. Sodium chloride exists as:

21. The secretions of the prostate gland and seminal vesicles provide the sperms with:

22. Which scientist argued, through thought experiments, that a body moving on a horizontal plane would move indefinitely if all impediments were removed?

23. Production of light without heat in living organisms, as in fireflies, is called:

24. Plastids that contain chlorophyll are called:

25. A lever is balanced when:

26. The special features that enable plants and animals to survive in a particular region are called:

27. Consider the following pairs: (I) Fe + CuSO₄ → FeSO₄ + Cu – Displacement reaction (II) Na₂SO₄ + BaCl₂ → BaSO₄ + 2NaCl – Double displacement reaction (III) CaO + H₂O → Ca(OH)₂ – Decomposition reaction Which of the pairs given above is/are correctly matched?

28. Assertion (A): The motion of a simple pendulum is simple harmonic only for small angular displacements. Reason (R): For small θ, sin θ can be approximated by θ in radians. Choose the correct statement:

29. Illegal sex-selective abortion of female foetuses leads to a decline in the:

30. The sky appears dark to an astronaut at a very high altitude because: