| 1 |
Letter K is used to express theshell around the nucleus of an atom. |
- A. 1st
- B. 2nd
- C. 3rd
- D. 4th
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| 2 |
Positively charged particle of an atom is called. |
- A. Electron
- B. Proton
- C. Atom
- D. Neutron
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| 3 |
There are ............ groups in periodic table. |
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| 4 |
Area around nucleus where electrons are found are called. |
- A. Orbit
- B. Shell
- C. Both a and b
- D. None of these
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| 5 |
How many periods are there is the Periodic table. |
- A. Five
- B. Six
- C. Seven
- D. Eight
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| 6 |
The particle of an atom having negative charge on it. |
- A. Electron
- B. Proton
- C. Neutron
- D. Nucleus
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| 7 |
The charge present on atom is |
- A. Positive
- B. Negative
- C. Both a and b
- D. Neutral
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| 8 |
Atomic number of element presetnin period 2 and group 15 of the periodic table. |
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| 9 |
The numebr of electorns present in an atom s equal to number of. |
- A. Nucleus
- B. Neutrons
- C. Proton
- D. Atom
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| 10 |
In .... elements are arranged in order of increasing atomic numbers. |
- A. Group
- B. Period
- C. Orbit
- D. Shell
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