| 1 |
Which of the following element has lowest ionization energy |
- A. Beryllium
- B. Boron
- C. Carbon
- D. Oxygen
|
| 2 |
The concept of atomic number was introduced by |
- A. Alrazi
- B. Mendeleeve
- C. Moseley
- D. Dobereiner
|
| 3 |
Who gave the law of Triads in 1829? |
- A. Dobereiner
- B. Mosely
- C. Newland
- D. Mendeleev
|
| 4 |
The oxides of metal sare generally |
- A. Acidic
- B. Basic
- C. Neutral
- D. Amphoteric
|
| 5 |
In which block of periodic table non metals are present. |
|
| 6 |
Which one of the following elements has the largest second ionization energy. |
|
| 7 |
Which property of hydrogen not resemble to alkali metals. |
- A. Electronic configuration
- B. Oxidation state
- C. Reaction with halogen
- D. Metallic nature
|
| 8 |
Majority of the elements of the periodic table are. |
- A. Semi metals
- B. Non metals
- C. Metals
- D. Noble metals
|
| 9 |
As you proceed across a period in the periodic table the first ionization energy |
- A. Decrease
- B. Increase
- C. Remains constant
- D. First increase up the middle of period and then decreases
|
| 10 |
Element of which group reacts with hydrogen and form ionic hydrides. |
- A. II A
- B. IV A
- C. V A
- D. VI A
|