An Assertion is an affirmation, a declaration or a strong statement. Normally assertions have reasons. In this question type, an assertion is first given followed by a reason. You are supposed to first judge whether the assertion (A) is true and then decide on whether the reason (R) is true and in case both A and R are true then we need to see whether the reason is the correct explanation of the Assertion. The following solved examples will help you get a clearer understanding of this question type.
Directions: For the Assertions (A) and Reasons (R), choose the correct alternative from the following.
(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.
(e) If both A and R are false
Reason It is the main raw material for all automobiles.
Solution Both Assertion and Reason are true but the Reason does not explain the Assertion. Hence, (b) is the answer
Reason In spite of being India`s best spinner he was considered to be too old for ODIs.
Solution Both Assertion and Reason are right and the reason correctly explains the assertion. Hence (a) is the right answer.
Reason The push for economic development has increased to dangerous proportions the emission of greenhouse gases into the atmosphere.
Solution Green house gases are the root cause of global warming. Hence both A and R are true and R explains A. Hence, option (a) is correct.
Reason Some of the leading car manufacturing companies of the world are Japanese
Solution The Assertion is false because Kerala is not the largest state in India. R is true but it is not related to Assertion. Hence, option (d) is correct.
Reason Usually there is vacuum in the bulb
Solution A is false because a bulb filament is made of Tungsten and not copper. R is also false because inert gases or nitrogen are filled inside the bulb and there is no vacuum in the bulb. Hence, option (e) is correct.
Directions: : For the Assertion (A) and Reason (R) below, choose the correct alternative from the following.
(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.
Reason A person with the 'AB' blood group can accept blood of all types, i.e., A, B, AB and O.
Ans .
(b) Both A and R are true but R is not the correct explanation of A.
Both A and R are true, but R is not the reason for A. Hence, option (b) is correct
Reason The Ozone layer blocks the harmful ultraviolet rays from the Sun and thus protects life on earth
Ans .
(a) Both A and R are true and R is the correct explanation of A.
Both A and R are true, and R is the reason for A. Hence, option (a) is correct.
Reason The name India was coined by Mahatma Gandhi.
Ans .
(c) A is true but R is false.
A is true but R is false. Hence, option (c) is correct.
Reason It is also used in diesel cars
Ans .
(d) A is false but R is true.
A is false but R is true. Hence, option (d) is correct
Reason It is formed using three parts of hydrogen and one part of oxygen
Ans .
(c) A is true but R is false.
A is true but R is false. Hence, option (c) is correct.
Reason The process in which a nucleus is broken into two parts is called nuclear fission
Ans .
(b) Both A and R are true but R is not the correct explanation of A.
Both A and R are true, but R is not the reason for A. Hence, option (b) is correct.
Reason Its parliament is based in Delhi.
Ans .
(b) Both A and R are true but R is not the correct explanation of A.
Both A and R are true, but R is not the reason for A. Hence, option (b) is correct.
Reason Velocity = frequency ¥ wavelength
Ans .
(a) Both A and R are true and R is the correct explanation of A.
Both A and R are true, and R is the reason for A. Hence, option (a) is correct.
Reason It is because of refraction
Ans .
(a) Both A and R are true and R is the correct explanation of A.
Both A and R are true, and R is the reason for A. Hence, option (a) is correct.
Reason Four stroke engines have lower wastage of petrol in their operation
Ans .
(a) Both A and R are true and R is the correct explanation of A.
Both A and R are true, and R is the reason for A. Hence, option (a) is correct.
Reason Taking medicines without prescription is dangerous because only the doctor knows the actual components in a medicine and the possible side effects due to taking the medicine
Ans .
(a) Both A and R are true and R is the correct explanation of A.
Both A and R are true, and R is the reason for A. Hence, option (a) is correct.
Reason Harshad Mehta was known as the "big bull".
Ans .
(b) Both A and R are true but R is not the correct explanation of A.
Both A and R are true, but R is not the reason for A. Hence, option (b) is correct
Reason Contact with water cools the body in the summer.
Ans .
(a) Both A and R are true and R is the correct explanation of A.
Both A and R are true, and R is the reason for A. Hence, option (a) is correct.
Reason If you touch an iron rod which is exposed to electric current, you will get an electric shock.
Ans .
(b) Both A and R are true but R is not the correct explanation of A
Both A and R are true, but R is not the reason for A. Hence, option (b) is correct.
Reason Iron is a good conductor of electricity.
Ans .
(a) Both A and R are true and R is the correct explanation of A.
Both A and R are true, and R is the reason for A. Hence, option (a) is correct.
Reason The value of the sensex increases whenever there is a heavy demand for the stocks which form the Sensex.
Ans .
(b) Both A and R are true but R is not the correct explanation of A.
Both A and R are true, but R is not the reason for A. Hence, option (b) is correct.
Reason The Prime minister plays an advisory role
Ans .
(b) Both A and R are true but R is not the correct explanation of A.
Both A and R are true, but R is not the reason for A. Hence, option (b) is correct.
Reason What we now call India is the modern version of Bharat.
Ans .
(b) Both A and R are true but R is not the correct explanation of A.
Both A and R are true, but R is not the reason for A. Hence, option (b) is correct.
Reason Pratibha Patil was appointed as India`s first woman president in 2007.
Ans .
(b) Both A and R are true but R is not the correct explanation of A.
Both A and R are true, but R is not the reason for A. Hence, option (b) is correct.
Reason Ever since its formation, it has played a major role in disbursing aid and support to economies across the world.
Ans .
(a) Both A and R are true and R is the correct explanation of A.
Both A and R are true, and R is the reason for A. Hence, option (a) is correct.
Reason A young team played fearless and brilliant cricket to win the inaugural T20 world cup.
Ans .
(a) Both A and R are true and R is the correct explanation of A.
Both A and R are true, and R is the reason for A. Hence, option (a) is correct.
Reason When temperature is constant, pressure and volume are inversely proportional to each other
Ans .
(a) Both A and R are true and R is the correct explanation of A.
Both A and R are true, and R is the reason for A. Hence, option (a) is correct.
Reason The Y2k problem emerged due to the fact that the date field in computers had only two digits
Ans .
(a) Both A and R are true and R is the correct explanation of A.
Both A and R are true, and R is the reason for A. Hence, option (a) is correct.
Reason Amartya Sen has made an invaluable contribution in the field of developmental economics.
Ans .
(a) Both A and R are true and R is the correct explanation of A.
Both A and R are true, and R is the reason for A. Hence, option (a) is correct.
Reason Manmohan Singh was the finance minister who first started opening up the Indian economy in 1991.
Ans .
(a) Both A and R are true and R is the correct explanation of A.
Both A and R are true, and R is the reason for A. Hence, option (a) is correct.