Sets
General Science Set 2
30 questions 1. The process of beating harvested stalks to separate grains from them is called:
2. Adolescence typically occurs between the ages of:
3. The value of the universal gas constant R is:
4. A sodium atom on losing its valence electron forms:
5. Cilia and flagella emerge from centriole-like structures called:
6. The number of significant figures in 0.00250 m is:
7. Which of the following is a heterotroph?
8. Consider the following pairs:
(I) Lunar eclipse – Full Moon day
(II) Solar eclipse – New Moon day
(III) Solar eclipse – Full Moon day
Which of the pairs given above is/are correctly matched?
9. When hydrogen gas is passed over heated copper(II) oxide, the black coating turns:
10. In aquatic plants, air spaces that help them float are formed by specialised:
11. Most α-particles passed through the gold foil undeflected, which showed that:
12. The black oxide formed when copper is heated in air is:
13. In fishes, blood passes through the heart ___ during one cycle of passage through the body.
14. The frequency of the AC electric power received in houses is:
15. The formula unit mass of magnesium oxide (Mg = 24 u, O = 16 u) is:
16. Edward Jenner developed the first vaccine against:
17. About 99 per cent of the Sun's energy falls within the:
18. Electron microscopes produce highly magnified images by using:
19. Synthetic diamonds are prepared by subjecting pure carbon to:
20. In which of the following is the work done by the force on the object negative?