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- 1. Multiple Choice
Isotopes are having same number of _________number but different ___________number.
Atomic, mass
Mass, atomic
Electron, proton
neutron, proton
- 2. Multiple Choice
Cl-35 and Cl-37 are the pairs of ______________.
Isobars
Isotopes
Isotones
Isodiaphers
- 3. Multiple Choice
What is atomic number of phosphourous?
11
14
15
10
- 4. Multiple Choice
In neutral atom, number of electron will be equal to number of________.
proton and neutron both
neutron
none of these
proton
- 5. Multiple Choice
Number of electron present in Phosphide ion.
15
12
18
20
- 6. Multiple Choice
Number of neutron in aluminium will be ____ if mass number of Al is 27.
12
14
13
15
- 7. Multiple Choice
Number of neutrons in Phosphide ion will be _______ if the mass number of phosphorous is 31.
18
17
15
16
- 8. Multiple Choice
Molecule of sulphur contains _____ atoms of sulphur.
8
2
6
1
- 9. Multiple Choice
The colour of Bromine is _______.
Yellow
no colour
Red
Blue
- 10. Multiple Choice
Atomic number denoted by the ___________.
A
M
P
Z
- 11. Multiple Choice
How many electrons, protons present in Magnesium ion respectively.
12,10
10,12
12,12
14,12
- 12. Multiple Choice
Number of neturons will be in Cl-35 and Cl-37 respectively.
17,18
18,20
20,18
18,18
- 13. Multiple Choice
Number of neutrons will be in K-39 and Ca-40 _____ and ______ respetively.
20,20
19,20
20,19
19,19
- 14. Multiple Choice
Total number of electrons in CO2 and N2O will be ____ and ____ respectively.
22,20
22,21
22,22
20,22
- 15. Multiple Choice
Number of electrons present in CaO and KF will be _____ and _____ respectively.
28,28
29,28
20,28
20,19
- 16. Multiple Choice
_____________ having same number of neutrons.
Isotones
Isotopes
Isobars
Isodiaphers
- 17. Multiple Choice
__________ having same difference of the number of neutrons and protons or having same (A-2Z) value.
Isotones
Isobars
Isotopes
Isodiaphers
- 18. Multiple Choice
____________are the elements and ions that have the same or equal number of electrons.
Isoelectronic
Isobars
Isotopes
Isdiaphers
- 19. Multiple Choice
Isotopes having ________ physical properties and ______ chemical properties.
same, different
different, same
different, different
same, same
- 20. Multiple Choice
Isobars having ________ physical properties and ______ chemical properties.
same, different
different, same
same, same
different different
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