General Science Set 75 FAQs

1. A solution whose solute concentration is higher than that inside the cell is called:

2. Assertion (A): Non-metallic oxides are acidic in nature. Reason (R): Carbon dioxide reacts with calcium hydroxide, a base, to form a salt and water.

3. The discovery in 1820 that an electric current produces a magnetic field was made by:

4. Consider the following statements: (I) Fishes have a 2-chambered heart. (II) Amphibians have a 3-chambered heart. (III) All reptiles have a 3-chambered heart. Which of the above is/are correct?

5. The most abundant gas in the Earth's atmosphere is:

6. Pure gold is known as:

7. The menstrual cycle generally recurs every:

8. A convex mirror has a focal length of +15 cm. An object is placed 30 cm in front of it. The magnification produced is:

9. The blood component that helps in clotting at the site of injury is:

10. Air is a:

11. At the time of a short circuit, the current in the circuit:

12. Consider the following statements about excretion in plants: (I) Many waste products are stored in cellular vacuoles. (II) Waste products may be stored in leaves that fall off. (III) Plants never excrete any waste substance into the soil around them. Which of the above is/are correct?

13. The minimum temperature at which a substance catches fire is called its:

14. The distance between two consecutive troughs of a sound wave is called its:

15. Which of the following cells lacks a cell wall?

16. A traditional remedy for a nettle sting is rubbing the area with the leaf of:

17. When positive work is done on an object, its energy:

18. The growth of roots downward and shoots upward in response to the pull of earth is called:

19. The scientist said to have measured the periods of a swinging chandelier in a church using his pulse beats is:

20. According to WHO, health is a state of complete:

21. Compounds containing only carbon and hydrogen are called:

22. In the gold foil experiment, the fraction of α-particles that bounced back was about:

23. The diameter of the visible field of a microscope is 3 mm, and 12 cells lie along it in a straight line. The estimated size of one cell is:

24. A uniform mixture, such as that of salt and water, is called a:

25. The pressure at the bottom of a liquid column in a container depends on the:

26. Consider the following statements: (I) Microorganisms are found in hot water springs and snow-cold zones. (II) Microorganisms may be unicellular or multicellular. (III) Microorganisms cannot live inside the bodies of plants and animals. Which of the above is/are correct?

27. The formula unit mass of calcium chloride (Ca = 40 u, Cl = 35.5 u) is:

28. Consider the following pairs: (I) Ultrasonography – Imaging of internal organs (II) Infrasonic waves – Breaking kidney stones (III) Ultrasonic waves – Detecting defects inside metal blocks Which of the pairs given above is/are correctly matched?

29. The flexible rod-shaped structure used as a major criterion for classifying animals into non-chordata and chordata is the: