Sets
General Science Set 7
30 questions 1. A magnifying glass is a:
2. When a metal is attacked by substances around it, such as moisture and acids, the process is called:
3. A human zygote has ___ chromosomes.
4. The number of unique chemical elements known today is:
5. The growth zones at the tips of roots and shoots are called:
6. Rutherford showed that α-particles are:
7. Combustion of coal and petroleum produces major pollutants which are oxides of:
8. The special type of cell division that reduces the chromosome number of the parent cell to half is:
9. The wavelength of a 2000 Hz sound wave in air, taking the speed of sound as 344 m s⁻¹, is:
10. Which of the following non-metals is lustrous?
11. The range of distances from a star over which water remains liquid is called the:
12. The Moon can cover the Sun completely during a total solar eclipse because:
13. Cisplatin and taxol are drugs effective in the therapy of:
14. Consider the following pairs:
(I) Medulla – Involuntary actions
(II) Cerebellum – Precision of voluntary actions
(III) Fore-brain – Areas for hearing and sight
Which of the pairs given above is/are correctly matched?
15. Planets do not twinkle because they are:
16. The human rib cage consists of how many pairs of ribs?
17. A stone is lowered into a measuring cylinder containing 40 mL of water, and the water level rises to 52 mL. The volume of the stone is:
18. John Dalton proposed his atomic theory in:
19. Chromatin contains DNA and basic proteins called:
20. The instrument fitted in vehicles to measure the distance travelled is the: