Sets
General Science Set 35
30 questions 1. The progressive accumulation of non-degradable harmful chemicals at each trophic level is called:
2. Graphene aerogel, said to be the lightest material on earth, is made from:
3. A sudden loud sound pulse, as in a clap of thunder, is produced when heated air undergoes:
4. The binomial system of naming organisms was introduced in the 18th century by:
5. Any reaction that produces a precipitate is called a:
6. The first person to use a glass prism to obtain the spectrum of sunlight was:
7. The enzymes of the intestinal juice finally convert proteins into:
8. Which of the following animals can detect infrasound?
9. When blood sugar level rises, the cells of the pancreas respond by:
10. Different forms of the same element, such as diamond and graphite, are called:
11. For an isolated system, the heat lost by the hotter part is ___ the heat gained by the colder part.
12. The main source of energy on Earth is the:
13. Which of the following is a metalloid?
14. The audible range of human hearing is:
15. Which of the following ancient Indian texts classify animals on the basis of habitat, behaviour patterns and ecological roles?
16. Common salt is obtained from seawater by:
17. The phenomenon of certain elements emitting radiation on their own was named radioactivity by:
18. Smoking destroys the hair-like structures in the upper respiratory tract that help remove germs and dust. These structures are called:
19. Buds produced in the notches along the leaf margin fall on the soil and develop into new plants in:
20. The charge to mass ratio (e/mₑ) of the electron is: