RRB JE Mock Test 2019

1.  Modern periodic law had been given by          (1)

1. 1. Moseley
2. 2. Mendeleev
3. 3. Lother-Mayer
4. 4. Lavoisier

2.  Which one is known as father of periodic table             (3)

1. 1. Lavoisier
2. 2. Rutherford
3. 3. Mendeleev
4. 4. Bohr

3.  Helogens belong to the –            (2)

1. 1. s-block
2. 2. p-block
3. 3. d-block
4. 4. f-block

4.  In modern periodic table, the number of period is               (3)

1. 1. 2
2. 2. 6
3. 3. 7
4. 4. 8

5.  In modern periodic table, the group number is            (4)

1. 1. 15
2. 2. 16
3. 3. 17
4. 4. 18