Q21. Rhythmic expansion and contraction of the heart is called _________
a. Heartbeat b. Music c. Noise d. Sargam
Q22. Arteries and veins are joined by a network of _________.
a. Cilia b. Pseudopodia c. Capillaries d. All
Q23. The distance moved by an object in the unit time is called its _________.
a. Height b. Length c. Width d. Speed
Q24. The basic unit of speed is _________.
a. m/s b. Km/h c. Km/min d. m/min
Q25. To and fro motion is called _________ motion.
a. Circular b. Oscillatory c. Straight line d. All
Q26. A device that measures the distance moved by the vehicles is known as _________.
a. Thermometer b. Barometer c. Odometer d. Speedometer
Q27. _________ of the objects help us to decide which one is moving faster and which is slower.
a. Speed b. Size c. Shape d. Colour
Q28. Motion of an object can be presented in pictorial form by their _________.
a. Year – month graph c. Day – weed graph
b. Distance – time graph d. Hour – minute graph
Q29. The metallic ball is called _________ of the pendulum.
a. Needle b. Thread c. Hand d. Bob
Q30. Who invented the simple pendulum?
a. Robert Hook b. Edward Jenner c. Galileo Galilie d. Alexander Fleming
Q31. Longer live in the symbol for a cell represents its _________ terminal.
a. Positive b. Negative c. Neutral d. None of these
Q32. The combination of two or more cells is called a _________.
a. Circuit b. Battery c. Fuse d. Socket
Q33. An electric bell has an _________.
a. Electroplate b. Electricity c. Electromagnet d. All
Q34. _________ is the safety device which prevents damages to electrical circuits and possible fires.
a. Bulb b. Fuse c. Cell d. Torch
Q35. The full form of MCBs is _________.
a. Muscular cell bodies c. Maximum close bars
b. Minimum close bars d. Miniature circuit breaker
Q36. When switch is in ‘on’ position then it is said to be _________ circuit.
a. Open b. Close c. Neutral d. None of these
Q37. Fluorescent tubes and CFLs contain _________ vapour, which is very toxic.
a. Mercury b. Oxygen c. Nitrogen d. Hydrogen
Q38. What is standard mark on electrical products, which is an assurance of conformity to the
specifications given on the products.
a. Hallmark b. ISO c. FPO d. ISI
Q39. When the excessive current flows in the circuit, it may cause overloaded and fire caused by ______.
a. Short circuit b. Electric shock c. Electric Burst d. Short Damage
Q40. The credit for the invention of electric bulb is usually given to _________.
a. Banzamin Franklin b. Charls Babbage c. Thomas Alva Edison d. Write Brothers
Q41. _________ is one of the parts of female reproduction part of flower.
a. Stigma b. Stamen c. Anther d. Pollen
Q42. Coconut fruit & seed are dispersed by _________.
a. Air b. Water c. Animal d. Explosion
Answers
Answered by
1
Answer:
21 heart beat
22 capillaries
23 speed
24 metre per second
25 oscillatory motion
26 odometer
27 speed
28 distance time graph
29 Bob
30 Galileo Galilei
31 positive terminal
32 battery
33 all
34 fuse
35 miniature circuit breaker
36 closed-circuit
37 Mercury
38 ISI
39 short circuit
40 Thomas Alva Edison
41 stigma as well as style ovary and excetra
42 coconuts seeds are dispersed by water
Answered by
3
Answer:
21) heartbeat
22) capillaries
23) speed
24) m/s ; metre/sec
25) oscillation motion
26) speedometer
27)speed
28) distance-time graph
29) Bob
30) Galileo Galilei
31)
32) battery
33)all
34)fuse
35) miniature circuit beaker
36) close
37) mercury
38) ISI
39)short circuit
40) Thomas Alva Edison
41) stigma
42)
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