| 1 |
Number of elements in the first period of the periodic table is |
|
| 2 |
Electron affinity is measure of energy |
- A. Required to remover the electron
- B. Released by adding an electron
- C. Required to excite an electron
- D. Released by removing an electron
|
| 3 |
In a period, from left to right in the periodic table, the size of atom generally. |
- A. Increases
- B. decreases
- C. Remains constant
- D. First increase upto the middle of period and then decreases
|
| 4 |
In which group, melting point and boiling point increase downward in a group |
- A. IA
- B. II A
- C. VII A
- D. Both a and b
|
| 5 |
In which group of periodic table is the element which has atomic number 14. |
|
| 6 |
Mark the incorrect statement |
- A. Metallic character increase down the group
- B. Metallic character increase from left to right along a period
- C. Metallic character decrease from left to right along a period
- D. Metallic character remains the same down the group
|
| 7 |
<div>Which hydride is intermediate in nature.</div> |
- A. NaH
- B. BeH2
- C. NH3
- D. HCl
|
| 8 |
Which one of the following elements burns in air to form an oxide which, when shaken with water, give a solution with a pH greater than 7. |
- A. Carbon
- B. Magnesium
- C. sulphur
- D. Hydrogen
|
| 9 |
Which oxide is more basic in nature. |
- A. Beo
- B. MgO
- C. CaO
- D. BaO
|
| 10 |
Which one of the following is a metalloid. |
- A. sulphur
- B. Antimony
- C. Mercury
- D. Zinc
|