General Science Set 18 FAQs

1. An insoluble substance formed in a reaction is called a:

2. Which of the following is an electrical insulator?

3. If the two copies of a gene for a trait are not identical, the trait that gets expressed is called:

4. Sodium, magnesium and calcium are obtained by the electrolysis of their:

5. A continuous and closed path of an electric current is called:

6. Ozone in the upper atmosphere shields the surface of the Earth from:

7. Which of the following is a native mineral?

8. Which of the following materials has the highest coefficient of linear expansion?

9. Consider the following statements about photosynthesis: (I) Chlorophyll is essential for the process. (II) Oxygen is a raw material for the process. (III) Carbon dioxide is used in the process. Which of the above is/are correct?

10. Acute chest pain due to insufficient oxygen reaching the heart muscle is called:

11. When two objects at different temperatures come in contact, energy flows from the:

12. A pure substance, in science, consists of:

13. Lymph carries digested and absorbed fat from the:

14. A constant force of 25 N displaces an object by 4 m in the direction of the force. The work done is:

15. The gas evolved when iron reacts with dilute hydrochloric acid is:

16. The inner lining of the stomach is protected from the action of acid by:

17. A reliable measure of the hotness or coldness of a body is its:

18. The atomic weight predicted by Mendeleev for Eka-silicon was:

19. Blocking the vas deferens in males prevents:

20. A microphone converts:

21. Consider the following statements: (I) Viruses are composed of genetic material with a protein coat. (II) Viroids lack a protein coat around their genetic material. (III) Prions are misfolded proteins that lack genetic material. Which of the above is/are correct?

22. The SI unit of temperature is:

23. The acid injected into the skin by a red ant bite is:

24. Consider the following statements: (I) Plant cells have a large vacuole. (II) The vacuole helps in maintaining the shape of a plant cell. (III) Animal cells usually have large vacuoles. Which of the above is/are correct?

25. At the centre of a current-carrying circular loop, the magnetic field lines appear as:

26. On heating, the density of a substance generally:

27. The anther contains:

28. An element has two isotopes of masses 10 u and 11 u, present in 20% and 80% abundance respectively. Its average atomic mass is:

29. In the liver, methanol is oxidised to:

30. Krishi Vigyan Kendras, which train farmers in modern grafting, function under the: