Learn and practice Problems on Assertion and Reason with easy explaination and shortcut tricks. All questions and answers on Assertion and Reason covered for various Competitive Exams.

This type of reasoning questions consists of two statements; an assertion (statement of fact) and a reason (explanation for the assertion). You have to determine whether each statement is correct. If both the statements are correct, you have to determine whether the reason supports the assertion. There will be four answer choices for the possible outcomes and you have to select the correct one.

1) Assertion (A): James Watt invented the steam engine.

Reason (R): It was invented to pump out the water from the flooded mines.

1. Both A and R are true and R is the correct explanation of A.
2. Both A and R are true, but R is not the correct explanation of A.
3. A is true, but R is false.
4. A is false, but R is true.
5. Both A and R are false.

2) Assertion (A): Increased levels of carbon dioxide in the atmosphere would melt the polar ice.

Reason (R): Increased levels of carbon dioxide would increase the temperature.

1. Both A and R are true and R is the correct explanation of A.
2. Both A and R are true, but R is not the correct explanation of A.
3. A is true, but R is false.
4. A is false, but R is true.
5. Both A and R are false.

3) Assertion (A): Uranium can undergo a nuclear fusion reaction.

Reason (R): Uranium has a big unstable nucleus.

1. Both A and R are true and R is the correct explanation of A.
2. Both A and R are true, but R is not the correct explanation of A.
3. A is true, but R is false.
4. A is false, but R is true.
5. Both A and R are false.

4) Assertion (A): Baking soda helps reduce stomach acidity.

Reason (R): It is a powerful natural cleaner.

1. Both A and R are true and R is the correct explanation of A.
2. Both A and R are true, but R is not the correct explanation of A.
3. A is true, but R is false.
4. A is false, but R is true.
5. Both A and R are false.

5) Assertion (A): Plants have green leaves.

Reason (R): Plants contain phycoerythrin, the green pigment.

1. Both A and R are true and R is the correct explanation of A.
2. Both A and R are true, but R is not the correct explanation of A.
3. A is true, but R is false.
4. A is false, but R is true.
5. Both A and R are false.

6) Assertion (A): Copper is more expensive than silver.

Reason (R): Copper is a good conductor of electricity.

1. Both A and R are true and R is the correct explanation of A.
2. Both A and R are true, but R is not the correct explanation of A.
3. A is true, but R is false.
4. A is false, but R is true.
5. Both A and R are false.

7) Assertion (A): We sweat less in hot and humid climate.

Reason (R): Sweat evaporates quickly in hot and humid climate.

1. Both A and R are true and R is the correct explanation of A.
2. Both A and R are true, but R is not the correct explanation of A.
3. A is true, but R is false.
4. A is false, but R is true.
5. Both A and R are false.

8) Assertion (A): We should stop weeds from growing in the crop fields.

Reason (R): Weeds leave no space for crops to grow.

1. Both A and R are true, and R is the correct explanation of A.

9) Assertion (A): Diamond is used for cutting the glass.

Reason (R): The refractive index of diamond is high.

1. Both A and R are true, and R is the correct explanation of A.
2. Both A and R are true, but R is not the correct explanation of A.
3. A is true, but R is false.
4. A is false, but R is true.
5. Both A and R are false.

10) Assertion (A): The water kept in the earthen pot cools down in summers.

Reason (R): The water evaporates through the pores, which causes cooling.

1. Both A and R are true, and R is the correct explanation of A.
2. Both A and R are true, but R is not the correct explanation of A.
3. A is true, but R is false.
4. A is false, but R is true.
5. Both A and R are false.