1. Assertion
In medical parlance with respect to blood groups, a person with a blood group of
‘O’ is called Universal Donor.
Reason
A person with the ‘AB’ blood group can accept blood of all types, i.e., A, B, AB
and O.
a) Both A and R are true and R is the correct explanation of A.
b) Both A and R are true but R is not the correct explanation of A.
c) A is true but R is false.
d) A is false but R is true.
Explanation: Both A and R are true, but R is not the reason for A. Hence, option (b) is correct.
2. Assertion
The Ozone layer present in the upper atmosphere of earth is beneficial for
sustaining life on earth.
Reason
The Ozone layer blocks the harmful ultraviolet rays from the Sun and thus protects
life on earth.
a) Both A and R are true and R is the correct explanation of A.
b) Both A and R are true but R is not the correct explanation of A.
c) A is true but R is false.
d) A is false but R is true.
Explanation: Both A and R are true, and R is the reason for A. Hence, option (a) is correct.
3. Assertion
Mahatma Gandhi is considered to be the father of the Indian Nation.
Reason
The name ‘India’ was coined by Mahatma Gandhi.
a) Both A and R are true and R is the correct explanation of A.
b) Both A and R are true but R is not the correct explanation of A.
c) A is true but R is false.
d) A is false but R is true.
Explanation: A is true but R is false. Hence, option (c) is correct.
4. Assertion
Diesel oil is cooking medium.
Reason
It is also used in diesel cars.
a) Both A and R are true and R is the correct explanation of A.
b) Both A and R are true but R is not the correct explanation of A.
c) A is true but R is false.
d) A is false but R is true.
Explanation: A is false but R is true. Hence, option (d) is correct.
5. Assertion
Water is essential for life.
Reason
It is formed using three parts of hydrogen and one part of oxygen.
a) Both A and R are true and R is the correct explanation of A.
b) Both A and R are true but R is not the correct explanation of A.
c) A is true but R is false.
d) A is false but R is true.
Explanation: A is true but R is false. Hence, option (c) is correct.
6. Assertion
The phenomena of nuclear fission generates great energy.
Reason
The process in which a nucleus is broken into two parts is called nuclear fission.
a) Both A and R are true and R is the correct explanation of A.
b) Both A and R are true but R is not the correct explanation of A.
c) A is true but R is false.
d) A is false but R is true.
Explanation: Both A and R are true, but R is not the reason for A. Hence, option (b) is correct.
7. Assertion
India is a sovereign country.
Reason
Its parliament is based in Delhi.
a) Both A and R are true and R is the correct explanation of A.
b) Both A and R are true but R is not the correct explanation of A.
c) A is true but R is false.
d) A is false but R is true.
Explanation: Both A and R are true, but R is not the reason for A. Hence, option (b) is correct
8. Assertion
When velocity is kept constant and wavelength is halved, then the frequency is
doubled.
Reason
Velocity = frequency ¥ wavelength
a) Both A and R are true and R is the correct explanation of A.
b) Both A and R are true but R is not the correct explanation of A.
c) A is true but R is false.
d) A is false but R is true.
Explanation: Both A and R are true, and R is the reason for A. Hence, option (a) is correct.
9. Assertion
An object immersed in a bottle of water appears larger than it actually is.
Reason
It is because of refraction.
a) Both A and R are true and R is the correct explanation of A.
b) Both A and R are true but R is not the correct explanation of A.
c) A is true but R is false.
d) A is false but R is true.
Explanation: Both A and R are true, and R is the reason for A. Hence, option (a) is correct.
10. Assertion
Four stroke engines are more efficient than two stroke engines as far as fuel
consumption is concerned.
Reason
Four stroke engines have lower wastage of petrol in their operation.
a) Both A and R are true and R is the correct explanation of A.
b) Both A and R are true but R is not the correct explanation of A.
c) A is true but R is false.
d) A is false but R is true.
Explanation: Both A and R are true, and R is the reason for A. Hence, option (a) is correct