Question : Which blood group is the universal donor?

Option 1: O+

Option 2: O-

Option 3: AB-

Option 4: AB+

Question : Which blood group is universal acceptor ?

Option 1: O⁺

Option 2: O^-

Option 3: AB^-

Option 4: AB⁺

Question : If the blood group of one parent is AB and that of the other O, the possible blood group of their child would be

Option 1: A or B

Option 2: A or B or O

Option 3: A or AB or O

Option 4: A or B or AB or O

Question : The following pie chart shows the data regarding the donors of A, B, O, and AB blood groups.

The ratio of the number of donors of blood group ' $O$ ' to the average of the number of donors of blood groups ' $\mathrm{A}$ ' and ' $\mathrm{AB}$ ' together is:

Option 1: 2 : 3

Option 2: 1 : 1

Option 3: 2 : 1

Option 4: 1 : 2

Question : Blood group AB has

Option 1: no antigen

Option 2: no antibody

Option 3: neither antigen nor antibody

Option 4: both antigen and antibody