RRB GROUP D Chemistry Quiz - 22

Attempt now to get your rank among 5 students!

Question 1:

Which science is sometimes called ‘central science’?

Question 2:

Consider the following statements

In 13Al27

  1. Mass number is 27
  2. Number of neutrons is 27
  3. Atomic number is 13
  4. Number of electrons is 14

Which of the above statement is/are correct?

Question 3:

The process of cleaning grease by soap is called?

Question 4:

The PH of a solution changes from 3 to 6. The H+ ion concentration –

Question 5:

Non metals can form negative ion by 

serach-testwale
x