General Science Set 65 FAQs

1. Coronary Artery Disease is often referred to as:

2. A compass needle is, in fact, a:

3. Hydrogen gas is not evolved when a metal reacts with:

4. The only living component of xylem is:

5. Consider the following statements: (I) In a series circuit, if one component fails, the circuit is broken and none of the components works. (II) A parallel circuit divides the current through the electrical gadgets. (III) A series arrangement is suitable for gadgets that need widely different currents. Which of the above is/are correct?

6. Which of the following is a millet?

7. The number of valence electrons in a carbon atom is:

8. Consider the following situations: (I) The force acting on an object is zero. (II) The object undergoes no displacement. (III) The force acts perpendicular to the displacement. In which of the above is the work done by the force zero?

9. Ribosomes were first observed under the electron microscope as dense particles by:

10. 30 density oscillations occur at a fixed point in 6 s. The time period of the sound wave is:

11. Water droplets appear on the outer surface of a tumbler containing ice-cold water because of:

12. Muscle cells change shape in response to nerve impulses because of special:

13. For the oscillator in the previous question, the kinetic energy at a displacement of 0.06 m from the mean position is:

14. While washing oil-stained clothes with soap, one end of a soap particle attaches to oil and the other end mixes with:

15. The middle lamella is mainly composed of:

16. Consider the following pairs: (I) ²³⁵₉₂U – Fuel in a nuclear reactor (II) ¹³¹₅₃I – Treatment of goitre and thyroid cancer (III) ¹⁴₆C – Radiation treatment for cancer Which of the pairs given above is/are correctly matched?

17. The hydrogen evolved immediately catches fire when which metal reacts with cold water?

18. At night, the major gas exchange activity in plants is:

19. In uniform circular motion, the velocity at any point is directed along the:

20. An unfertilised egg remains viable for about:

21. Galileo measured the time of each swing of a church lamp using his:

22. Consider the following pairs: (I) Guru – Heavy (II) Drava – Solid (III) Khara – Rough Which of the pairs given above is/are correctly matched?

23. Fats are absorbed through lymph in the ___ present in intestinal villi.

24. Taking g = 9.8 m s⁻² at the surface and the radius of the Earth as 6400 km, the approximate value of g at a height of 128 km above the surface is:

25. Water has its highest density at:

26. Plants are grouped into herbs, shrubs and trees on the basis of:

27. The tendency of an object to resist a change in its state of rest or uniform motion was named by Newton as:

28. In the chlor-alkali process, hydrogen gas is liberated at the:

29. The main site of infection in Hepatitis A is the:

30. The process of surface water seeping through soil and rocks is called: