| Question (1):
The properties of an element in the periodic table depends on its, ________. |
| 1. |
atomic size |
| 2. |
atomic mass
|
| 3. |
electronic configuration |
| 4. |
number of protons |
|
| Ans: 3 |
|
| Question (2):
An element has configuration 2, 8, 1. It belongs to, _________. |
| 1. |
1 group and 3rd period |
| 2. |
3 group and 1st period
|
| 3. |
1 group and 8th period |
| 4. |
17 group and 3rd period |
|
| Ans: 1 |
|
| Question (3):
The number of electrons in the valence shell is equal to its ________. |
| 1. |
atomic mass |
| 2. |
group number
|
| 3. |
period number |
| 4. |
atomic volume |
|
| Ans: 2 |
|
| Question (4):
The non-metallic element present in the third period other than sulphur and chlorine is _______. |
| 1. |
oxygen |
| 2. |
fluorine
|
| 3. |
nitrogen |
| 4. |
phosphorus |
|
| Ans: 4 |
|
| Question (5):
At the end of each period the valence shell is __________. |
| 1. |
incomplete |
| 2. |
half filled
|
| 3. |
singly occupied |
| 4. |
completely filled |
|
| Ans: 4 |
|
| Question (6):
The family of elements having seven electrons in the outermost shell is ______. |
| 1. |
alkali metals |
| 2. |
alkaline earth metals
|
| 3. |
halogens |
| 4. |
noble gases |
|
| Ans: 3 |
|
| Question (7):
Which of the following factors does not affect the metallic character of an element? |
| 1. |
Atomic size |
| 2. |
Ionisation potential
|
| 3. |
Electronegativity |
| 4. |
Atomic radius |
|
| Ans: 3 |
|
| Question (8):
The family of elements to which potassium belongs is _________. |
| 1. |
alkali metals |
| 2. |
alkaline earth metals
|
| 3. |
halogens |
| 4. |
noble gases |
|
| Ans: 1 |
|
| Question (9):
The modern periodic table is given by ________ |
| 1. |
Mendeleev |
| 2. |
Einstein
|
| 3. |
Bohr |
| 4. |
Mosley |
|
| Ans: 4 |
|
| Question (10):
Elements belonging to groups 1 to 17 are called __________. |
| 1. |
noble gases |
| 2. |
normal elements
|
| 3. |
transition elements |
| 4. |
inner transition elements |
|
| Ans: 2 |
|
| Question (11):
A liquid non-metal is ___________. |
| 1. |
phosphorous |
| 2. |
mercury
|
| 3. |
bromine |
| 4. |
nitrogen |
|
| Ans: 3 |
|
| Question (12):
The first alkali metal is _________. |
| 1. |
hydrogen |
| 2. |
lithium
|
| 3. |
sodium |
| 4. |
francium |
|
| Ans: 2 |
|
| Question (13):
A purple coloured solid halogen is ________. |
| 1. |
chlorine |
| 2. |
bromine
|
| 3. |
iodine |
| 4. |
astatine |
|
| Ans: 3 |
|
| Question (14):
Lanthanides and actinides are also called ___________. |
| 1. |
normal elements |
| 2. |
transition elements
|
| 3. |
noble gases |
| 4. |
inner transition elements |
|
| Ans: 4 |
|
| Question (15):
The family of elements to which calcium belongs is __________. |
| 1. |
alkali metals |
| 2. |
alkaline earth metals
|
| 3. |
halogens |
| 4. |
noble gases |
|
| Ans: 2 |
|
| Question (16):
The least reactive element in group 17 is ___________. |
| 1. |
fluorine |
| 2. |
chlorine
|
| 3. |
bromine |
| 4. |
iodine |
|
| Ans: 4 |
|
| Question (17):
The valency of chlorine with respect to oxygen is __________. |
|
|
| Ans: 4 |
|
| Question (18):
The number of shells in the elements of 3rd period is __________. |
|
|
| Ans: 3 |
|
| Question (19):
Four elements along a period have atomic number (11, 13, 16 and 17). The most metallic among these has an atomic number of __________. |
|
|
| Ans: 1 |
|
| Question (20):
Six elements A, B, C, D, E and F have the following atomic numbers
(A = 12, B = 17, C = 18, D = 7, E = 9 and F = 11).
Among these elements, the element, which belongs to the 3rd period and has the highest ionisation potential, is __________.
|
|
|
| Ans: 3 |
|
| Question (21):
A factor that affects the ionisation potential of an element is __________. |
| 1. |
atomic size |
| 2. |
electron affinity
|
| 3. |
electro-negativity |
| 4. |
neutrons |
|
| Ans: 1 |
|
| Question (22):
The element, which has the highest electron affinity in the 3rd period is _________. |
|
|
| Ans: 4 |
|
| Question (23):
The element, which has zero electron affinity in the 3rd period is __________. |
|
|
| Ans: 3 |
|
| Question (24):
The statement that is not true about electron affinity is |
| 1. |
It causes energy to be released |
| 2. |
It causes energy to be absorbed
|
| 3. |
It is expressed in electron volts |
| 4. |
It involves formation of an anion |
|
| Ans: 2 |
|
| Question (25):
Down a group, the electron affinity __________. |
| 1. |
increases |
| 2. |
decreases
|
| 3. |
remains same |
| 4. |
increases and then decreases |
|
| Ans: 2 |
|
