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- 1. Multiple Choice
WHO DISCOVERED ELECTRONS
J.J.THOMSON
E.GOLDSTEIN
RUTHERFORD
CHADWIK
- 2. Multiple Choice
WHO DISCOVERED PROTONS?
E.GOLDSTEIN
J.J.THOMSON
RUTHERFORD
CHADWIK
- 3. Multiple Choice
ATOM HAS A POSITIVELY CHARGED NUCLEUS
THIS WAS PROPOSED BY SCIENTIST:
J.J.THOMSON
E.GOLDSTEIN
RUTHERFORD
NEILS BOHR
- 4. Multiple Choice
ELECTRONS REVOLVE IN DISCRETE ENERGY SHELLS
THIS WAS PROPOSED BY
NEIL BOHR
ANTOINNE LAVOISIER
ROBERT BOYLE
RUTHERFORD
- 5. Multiple Choice
K SHELL-2, L SHELL- 7, M SHELL-2 IS ELECTRONIC CONFIGURATION OF:
HYDROGEN
SODIUM
MAGNESIUM
NONE
- 6. Multiple Choice
AN ATOM HAS MASS NUMBER 37 AND ATOMIC NO 17.FIND THE NO OF PROTONS
21
22
17
20
- 7. Multiple Choice
WHICH OF THE FOLLOWING IS RESPONSIBLE FOR MASS OF AN ATOM
NO OF PROTONS
NO OF ELECTRONS
NO OF PROTONS AND NEUTRONS
NO OF NEUTRONS
- 8. Multiple Choice
FIND OUT THE ATOMIC NO OF ELEMENT IF ITS BOTH K AND L SHELLS ARE COMPLETELY FULL:
11
20
12
10
- 9. Multiple Choice
WHICH OF THE FOLLOWING DECIDE THE CHEMICAL PROPERTIES OF ELEMENTS?
NO OF PROTONS
NO OF VALENCE ELECTRONS
NO OF ELECTRONS IN L SHELL
NO OF NEUTRONS
- 10. Multiple Choice
WHAT HAPPENS TO THE ATOMIC NO DURING A CHEMICAL REACTION?
IT INCREASES
IT DECREASES
REMAINS SAME
CHANGES ALTERNATIVELY
- 11. Multiple Choice
ELECTRONIC CONFIGURATION OF CALCIUM IS
2,8,8,2
2,8,9
2,8,7,3,
2,7,7,4,
- 12. Multiple Choice
ATOMS THAT HAVE SAME MASS NO AND DIFFERENT ATOMIC NO ARE CALLED:
ISOTOPES
ISOBARS
ISOTONES
ISOMERS
- 13. Multiple Choice
AN ATOM DIFFERS FROM ION WITH RESPECT TO :
NO OF PROTONS
NO OF NEUTRONS
NO OF ELECTRONS
MASS NO
- 14. Multiple Choice
ISOTOPES OF ELEMENTS HAVE SAME
PHYSICAL PROPERTIES
CHEMICAL PROPERTIES
MASS NO
NO OF NEUTRONS
- 15. Multiple Choice
TYPE OF ION FORMED BY ALUMINIUM IS:
AL3+
AL2+
AL3-
AL2-
- 16. Multiple Choice
ARGON AND CALCIUM ARE PAIR OF
ISOTOPES
ISOBARS
ISOMERS
ISOTONES
- 17. Multiple Choice
ISOTOPE OF FOLLOWING ELEMENT IS USED IN TREATMENT OF GOITRE
COBALT
IODINE
URANIUM
MAGNESIUM
- 18. Multiple Choice
HOW MANY ELECTRONS ARE PRESENT IN OXIDE ION?
8
9
10
11
- 19. Multiple Choice
NO OF PROTONS PRESENT IN CHLORIDE ION ARE :
17
18
16
20
- 20. Multiple Choice
Atomic models have been improved over the years. Arrange the following atomic models in the order of their chronological order
(i) Rutherford’s atomic model
(ii) Thomson’s atomic model
(iii) Bohr’s atomic model
(i), (ii) and (iii)
(ii), (iii) and (i)
(ii), (i) and (iii)
(iii), (ii) and (i)
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