Question

1. The human voice box is called___________.(larynx, pharynx, trachea).
2. To prevent rusting of iron, coating of ______ is done on iron.(chromium, zinc, tin).
3. The north pole of a magnet __________the north pole of another magnet.(attract,
repels)
4. Friction depends on the _____________ of surfaces.( smoothness, density).
 Answer the following in one word/one sentence:
5. Name the two natural satellite of mars.
6. Give examples of luminous and non-luminous object?
7. Define - zygote.
8. What is electroplating?
 State whether each of the following statement is True/False 9. Angle of incidence is equal to the angle of reflection.
10. Oviparous animals give birth to young ones.
11. If the amplitude of vibrations is large, sound is feeble.
 Choose the correct alternative for the following statements:
12. The size of the pupil becomes ____________ when you see in dim light.
A. large B. small C. flat
13. Cells which lack nuclear membrane are_________-.
A. eukaryotic cells B. prokaryotic C. single cells cells
14. What is the lower limit of frequency of human hearing? A. 200 Hz B. 20 Hz C. 20 kHz
15. Which planet appears red in colour?
A. Mars B. Earth C. Uranus
SECTION B
D. none of the above D. multicells
D. 2000 Hz D. Saturn

Answer 1

Answer:

larynx ,zinc,repels, smoothness,Phobos and demos

Answer 2

Answer:

1.pharynx

2.zinc

3.repels

4.smoothness

Explanation:

hope it helps you