Sets
General Science Set 45
30 questions 1. Which non-metal is commonly used in water purification?
2. The velocity of a bus changes from 18 km h⁻¹ to 36 km h⁻¹ in 4 s. Its average acceleration is:
3. The major site for synthesis of lipid in the cell is:
4. The two sides of the 'U' of a tuning fork are called:
5. Consider the following statements:
(I) Brass and bronze are good conductors of electricity.
(II) Solder has a low melting point.
(III) The melting point of an alloy is less than that of pure metals.
Which of the above is/are correct?
6. Yeast reproduces by putting out small buds that separate and grow further. This process is called:
7. The polar regions experience continuous sunshine for about:
8. The products of photosynthesis are:
9. Assertion (A): Oxidation and reduction always occur together in a chemical reaction.
Reason (R): The electrons lost by one species are gained by another species.
10. The angle between the direction of the incident ray and the direction of the emergent ray in a glass prism is called the angle of:
11. Hasuru Honnu, a book describing a botanical excursion in the forests of the Western Ghats, was written by:
12. Consider the following about a burning candle:
(I) Melting of wax is a physical change.
(II) Evaporation of wax is a physical change.
(III) Burning of wax vapour is a chemical change.
Which of the above is/are correct?
13. The momentum of an object is the product of its:
14. Known as the 'Father of Modern Biogas', who established India's first scientifically designed biogas plant at Ramnagar, Sitapur, in 1957?
15. Atoms with the same atomic number but different mass numbers are called:
16. The correct decreasing order of reactivity of the following metals with dilute acids is:
17. Consider the following statements about the cells of meristematic tissue:
(I) They have thin cell walls.
(II) They have a large and prominent nucleus.
(III) They have large vacuoles.
Which of the above is/are correct?
18. Consider the following statements for motion in a straight line:
(I) If the object moves without turning back, distance travelled equals the magnitude of displacement.
(II) If the object moves in one direction, average speed equals the magnitude of average velocity.
(III) If the object turns back, average speed equals the magnitude of average velocity.
Which of the above is/are correct?
19. The epithelium made of a single layer of thin, flat cells, found in blood vessels and lungs, helps in:
20. Consider the following statements:
(I) A transparent solution shows the Tyndall effect.
(II) A colloid shows the Tyndall effect.
(III) A suspension shows the Tyndall effect.
Which of the above is/are correct?