Unit 6 Structure of Atoms – General Science online quiz class 7

Unit-6-Structure-of-Atoms-General-Science-MCQs-class-7

Class 7 General Science, Chapter # 6, online quiz, test with answers

Click here to prepare for Quiz

0%
0 votes, 0 avg
8

Unit 6 Structure of Atoms

Class 7 General Science, Chapter # 6, Online Quiz

1 / 67

Category: General Science

1. With the help of chemical formula we can find:

2 / 67

Category: General Science

2. Chlorine has seven electrons in its outermost shell, so the valency of chlorine is:

3 / 67

Category: General Science

3. ______ have a positive (+) charge

4 / 67

Category: General Science

4. Sub-atomic or fundamental particles of atom have ____ types:

5 / 67

Category: General Science

5. The first orbit near the nucleus is:

6 / 67

Category: General Science

6. An isotope of ____ is used to determine the age of old material like trees.

7 / 67

Category: General Science

7. The sum of the number of protons and number of neutrons

8 / 67

Category: General Science

8. If the outermost shell has more than four electrons, its valency will be equal to 8 minus the number of:

9 / 67

Category: General Science

9. _____ is the number of protons or electrons

10 / 67

Category: General Science

10. Some isotopes are radioactive i.e they “radiate”:

11 / 67

Category: General Science

11. ____ isotopes are used to detect the leakage of pipelines.

12 / 67

Category: General Science

12. ____ have a negative charge.

13 / 67

Category: General Science

13. Law of constant composition was presented by:

14 / 67

Category: General Science

14. Electron revolve around the nucleus in particular paths called

15 / 67

Category: General Science

15. ____ revolve in orbits around the nucleus.

16 / 67

Category: General Science

16. Ions have ____ types:

17 / 67

Category: General Science

17. Sodium has one electron in its outermost shell, so the valency of sodium is:

18 / 67

Category: General Science

18. Atoms of same element having same number of protons but different number of neutrons are called:

19 / 67

Category: General Science

19. The representation of a molecule of a compound in the form of symbols is called:

20 / 67

Category: General Science

20. The maximum number of electrons in first orbit K=

21 / 67

Category: General Science

21. Every simple of pure substance always contains same elements in fixed proportion regardless of:

22 / 67

Category: General Science

22. An element has seven electrons in its valence shell. Its valency is:

23 / 67

Category: General Science

23. These have same number of protons in each atom but the neutron number can vary:

24 / 67

Category: General Science

24. The number of protons and the number of electrons are ___

25 / 67

Category: General Science

25. ______ no charge.

 

 

 

 

26 / 67

Category: General Science

26. ____ is a charged particle that is formed by the removal or addition of one or more electrons from an atom or molecule.

27 / 67

Category: General Science

27. Protium hydrogen has one proton, ____ neutron and one electron.

28 / 67

Category: General Science

28. Heavy hydrogen is:

29 / 67

Category: General Science

29. The outermost orbit cannot have more than _____ electrons

30 / 67

Category: General Science

30. Protons and neutrons reside in the nucleus, thus they are also known as:

31 / 67

Category: General Science

31. Physical properties of some isotopes may be:

32 / 67

Category: General Science

32. _____ reside in the nucleus.

33 / 67

Category: General Science

33. Atom is electrically ____

34 / 67

Category: General Science

34. Water always contain:

35 / 67

Category: General Science

35. ____ depends upon the number of electrons present in the outermost shell.

36 / 67

Category: General Science

36. An isotope of ____ is used as fuel in a nuclear reactor.

37 / 67

Category: General Science

37. Atoms containing less than four electrons in its outermost shell, its valency is equal to the number of:

38 / 67

Category: General Science

38. The chemical properties of isotopes are the:

39 / 67

Category: General Science

39. The maximum number of electrons in second orbit L=

40 / 67

Category: General Science

40. The word atom is derived from the Greek word “atomos” which means:

41 / 67

Category: General Science

41. The combining capacity of the atoms to form molecules either with same or different elements is known as

42 / 67

Category: General Science

42. Hydrogen has ____ isotopes:

43 / 67

Category: General Science

43. An isotope of ____ is used in the treatment of cancer.

44 / 67

Category: General Science

44. An atom of carbon contains 6 protons and 6 neutrons, its mass number will be

45 / 67

Category: General Science

45. Ordinary naturally occurring hydrogen contains the largest percentage of:

46 / 67

Category: General Science

46. The idea of atoms was first proposed by the Greek philosopher Democritus in

47 / 67

Category: General Science

47. ____ are the basic building block of matter and can take part in a chemical reaction.

48 / 67

Category: General Science

48. The maximum number of electrons in third orbit M=

49 / 67

Category: General Science

49. ____ has mass and occupies space

50 / 67

Category: General Science

50. The atoms of same elements which have same atomic number but different mass number are called:

51 / 67

Category: General Science

51. Mass number is nearly equal to atomic mass of an atom and is denoted by:

52 / 67

Category: General Science

52. Tritium isotope has one proton, ____ neutron and one electron.

53 / 67

Category: General Science

53. For treatment of goiter, an isotope of ____ is used:

54 / 67

Category: General Science

54. The maximum number of electrons in fourth orbit N=

55 / 67

Category: General Science

55. If an electron or more than one electrons are removed from an atom, it become a positive ion which is also known as:

56 / 67

Category: General Science

56. Atoms of different elements with different atomic numbers but have the same mass number are called:

57 / 67

Category: General Science

57. Each sample of carbon dioxide contains:

58 / 67

Category: General Science

58. If an electron or more than one electrons are added to an atom, it becomes a negative ion which is also known as:

59 / 67

Category: General Science

59. The number of tritium isotope is one in ____ millions.

60 / 67

Category: General Science

60. Deuterium “D” has one proton, ____ neutron and one electron

61 / 67

Category: General Science

61. Radioactive isotope of hydrogen is:

62 / 67

Category: General Science

62. Atomic number is denoted by  _____ 

 

 

 

 

63 / 67

Category: General Science

63. The particle that carries a negative electrical charge.

64 / 67

Category: General Science

64. The idea that all matter is made up of atoms was first proposed by the ____ philosopher.

65 / 67

Category: General Science

65. Protons and neutrons are responsible for most of the _____

66 / 67

Category: General Science

66. The general formula for electrons distribution is:

67 / 67

Category: General Science

67. The center or core of an atom is called:

Your score is

The average score is 56%

0%

Leave a Comment

Your email address will not be published.