Question

Centrosome is an organelle present in animal cells that contain digestive enzymes. *
True
False
32. White blood cells are the cells that can change their shape. *
True
False
33. Amaranthus is a common weed that grows with almost every crop. *
True
False
34. Oxides of metals when dissolved in water form acidic oxides. *
True
False
35. Coal and Petroleum are inexhaustible natural resources. *
True
False
36. Polycot is a popular polyester. *
True
False
37. Angle between incident ray and normal is called angle of reflection. *
True
False
38. Ball bearing usually converts static friction into rolling friction *
True
False
39. Time is a physical quantity that decreases with the use of any lubricants between two surfaces *
True
False
40. The pressure in liquid decreases with increase in depth. *
True
False
41. Animal cell has a single large vacuole. *
True
False
42. An ostrich egg is a group of cells. *
True
False
43. Manure is not nutrient specific. *
True
False
44. Only the earth exerts gravitational force on all objects *
True
False
45. Angle of incidence is always greater than angle of reflection. *
True
False
46. If two surfaces are pressed harder, the force of friction increases. *
True
False
47. Fossil fuels can be made in the laboratory. *
True
False
48. Rayon is the first man-made cellulose fibre. *
True
False
49. Pickles are stored in plastic bottles mainly as plastics are non-reactive *
True
False
50. The metal which is a liquid at room temperature is bromine *
True
False​

Answer 1

32. True

33. True

34. False

35. False

36. True

37. False

38. False

39. False

40. False

41. False

42. False

43. True

44. False

45. False

46. True

47. True

48. True

49. True

50. False