| 1 |
D-block consists of: |
- A. 4th,5th & 6th periods
- B. 2nd, 3rd & 4th periods
- C. 1st, 2nd, & 3rd periods
|
| 2 |
4<sup>th</sup> and 5<sup>th</sup> period of the long form of periodic table are called<br> |
- A. short periods<br>
- B. Normal periods<br>
- C. Long periods<br>
- D. Very long periods<br>
|
| 3 |
The repetition of a property after a certain interval is: |
- A. Periodicity
- B. Properties
- C. Periodicity of properties
- D. None
|
| 4 |
The 2nd and third periods are called |
- A. short period
- B. Normal period
- C. Long period
- D. Very long period
|
| 5 |
The elements of group 3 to 12 are called |
- A. Normal elements
- B. Transition elements
- C. Radioactive elements
- D. None of these
|
| 6 |
The vertical columns in the periodic table are called:<br> |
- A. perlods<br>
- B. groups <br>
- C. rows <br>
- D. blocks<br>
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| 7 |
The periodic table consist of ________________ columns. |
- A. Periods
- B. Rows
- C. Column
- D. Nil
|
| 8 |
Which one of the following halogen has lowest electronegative?<br> |
- A. fluorine <br>
- B. chlorine <br>
- C. bromine <br>
- D. iodine<br>
|
| 9 |
The no.of elements in the first period is |
|
| 10 |
________________ elements were discovered in year 1800. |
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