Periodic Table

Q.

The vertical columns of the periodic table are called

1. rows

2. colums

3. periods

4. groups

Q.

What does period mean in the periodic table?

Q.

___ is a tabular arrangement of elements in vertical columns and horizontal rows indicating the regular trends in the properties of elements.

1. Periodic table

2. Chemical table

3. Elements table

4. Table

Q. The number of groups in the modern periodic table is :

1. 7
2. 8
3. 16
4. 18

Q.

What will be the trend of valency on moving right to the first group of the periodic table?

1. Decreases and then Increases

2. Increases and then decreases

3. Increases

4. Decreases

Q.

Which of the following option is true for the given statements?

A) Sodium and chlorine both have valency one.

B) Sodium and chlorine both belong to the same group.

1. Statement A and B both are true. Statement B is the correct explanation for statement A.

2. Statement A and B both are true. Statement B is the correct explanation for statement A.

3. Statement A is true and Statement B is false.

4. Statement A and B both are false.

Q.

In the periodic table, groups are numbered in ___ numerals.

Q.

Which of the following option is true for the given statements, if elements A and B both are non-metals?

A) Element A and element B both have the same valency.

B) Element A and element B both belong to the same group.

1. Both Statements cannot be true simultaneously

2. For Statement A to be true Statment B has to be true

3. For Statement B to be true Statement A has to be true

4. Both the statements are true but don't depend on each other.

Q.

How many groups are there in the modern periodic table?

1. 18

2. 16

3. 15

4. 10

Q.

How many groups and periods are there in the periodic table?

Q.

Elements of the same group have

1. True

2. False

3. same valency

4. different chemical properties.

Q.

The horizontal rows of the periodic table are called

1. periods

2. groups

3. colums

4. rows

Q.

How many groups are there in the modern periodic table?

1. 18, 8

2. 8, 18

3. 18, 7

4. 7, 18

Q.

In the long form of periodic table which period is:

Shortest

Q. Metal which is used in packaging and has a valency of $+3$ is:

1. lead
2. aluminium
3. potassium
4. copper
5. iron
6. silver

Q. The valency of which of these elements is zero?

(a) iron
(b) helium
(c) hydrogen
(d) oxygen