Class 9 Geography Chapter 1 Assertion and Reason Questions - Contemporary India - I

Q1: Direction: In the questions given below, there are two statements marked as Assertion (A) and Reason (R). Read the statements and choose the correct  option:
Assertion (A): The monsoon type of climate is characterized by a distinct seasonal pattern. 
Reason (R): The weather conditions greatly change from one season to the other.
(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.
Ans: (a)

• The assertion (A) is true. The monsoon type of climate does indeed exhibit a distinct seasonal pattern, characterized by alternating wet and dry seasons.
• The reason (R) is also true. Monsoon climates are known for experiencing significant changes in weather conditions from one season to another. For example, during the wet monsoon season, there is heavy rainfall, while the dry season is marked by reduced precipitation. The reason correctly explains why the monsoon climate has distinct seasonal patterns.

Since both the assertion and the reason are true, and the reason explains the assertion, the correct answer is (a).

Q2: Direction: In the questions given below, there are two statements marked as Assertion (A) and Reason (R). Read the statements and choose the correct  option:
Assertion (A): Although only the southern part of India lies in the tropical region, the whole of India has a tropical climate.
Reason (R): Himalaya mountain ranges protect it from the northerly cold winds.
(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.
Ans: (a)

The assertion is true and the reason is the correct explanation of the assertion. The Himalayas are the main mountain range of our country and they are situated in the northern part of our country. This mountain range manipulates our country’s climate in various ways. Due to its humongous size, it blocks the cold winds coming from the north and thus protects our country from having harsh winters.

Q3: Direction: In the questions given below, there are two statements marked as Assertion (A) and Reason (R). Read the statements and choose the correct  option:
Assertion (A): The world is divided into a number of climatic regions. 
Reason (R): The climate of India is described as the ‘monsoon’ type.
(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.
Ans: (b)

Climate reflects the cumulative amount of conditions (including variations) for a long period over wide areas (more than thirty years)

Q4: Direction: In the questions given below, there are two statements marked as Assertion (A) and Reason (R). Read the statements and chose the correct  option:
Assertion (A): Indian sub-continent experiences comparatively milder winters as compared to central Asia. 
Reason (R): The Himalayas prevent the cold winds from Central Asia from entering the subcontinent.
(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.
Ans: (a)

The Northern Indian mountains average about 6000 meters in height. In comparison, India’s huge coastal region is just about 30 meters high. The Himalayas block the cold winds from penetrating the subcontinent in Indian soils, in contrast with Central Asia.

Q5: Direction: In the questions given below, there are two statements marked as Assertion (A) and Reason (R). Read the statements and choose the correct  option:
Assertion (A): The Peninsular region does not have a well-defined cold season. 
Reason (R): The temperature pattern of the region remains more or less the same due to the moderating influence of the sea.
(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.
Ans: (a)

There is water on three sides of the peninsula. During day and night, the temperature is moderate, and the atmosphere is not severe. There is an exchange between sea breezes and ground breezes. Hope the reaction was helpful.

Q6: Direction: In the questions given below, there are two statements marked as Assertion (A) and Reason (R). Read the statements and choose the correct  option:
Assertion (A): The climate of India is strongly influenced by monsoon winds. 
Reason (R): The pressure and winds over India are unique.
(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.
Ans: (b)

Monsoon winds over the warm Tropical Seas are influenced by various atmospheric conditions. The monsoon continues from the beginning of June to mid-September for 100-120 days. The rainfall unexpectedly rises as the monsoon arrives. It lasts many days endlessly. This is considered the monsoon burst. It’s different from the rain before the monsoon. 

Q7: Direction: In the questions given below, there are two statements marked as Assertion (A) and Reason (R). Read the statements and choose the correct option:
Assertion (A): The Earth's climate is influenced by both natural and human factors.
Reason (R): Human activities, such as deforestation and industrialization, contribute significantly to climate change.
(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.

Answer: (a)

Both statements are correct. The Earth's climate is indeed influenced by natural factors (like volcanic eruptions and solar radiation) as well as human activities. The reason accurately explains how human activities significantly impact climate change.

Q8: Direction: In the questions given below, there are two statements marked as Assertion (A) and Reason (R). Read the statements and choose the correct option:
Assertion (A): The greenhouse effect is essential for life on Earth.
Reason (R): It helps to maintain the Earth's temperature by trapping heat in the atmosphere.
(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.

Answer: (a)

The greenhouse effect is crucial for life as it keeps the Earth warm enough to support life. The reason correctly explains that this effect maintains a stable temperature by trapping heat, making both statements true and directly related.

Q9: Direction: In the questions given below, there are two statements marked as Assertion (A) and Reason (R). Read the statements and choose the correct option:
Assertion (A): The amount of carbon dioxide in the atmosphere has decreased significantly over the past century.
Reason (R): The increased use of fossil fuels has led to a reduction in carbon dioxide levels.
(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.

Answer: (d)

The assertion is false because the concentration of carbon dioxide in the atmosphere has actually increased significantly due to the burning of fossil fuels. The reason is true; however, it describes the opposite effect, as fossil fuel use leads to an increase, not a decrease, in carbon dioxide levels.

Q10: Direction: In the questions given below, there are two statements marked as Assertion (A) and Reason (R). Read the statements and choose the correct option:
Assertion (A): The polar regions experience very little precipitation throughout the year.
Reason (R): The cold temperatures in these regions lead to high humidity.
(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.

Answer: (c)

The assertion is true; polar regions do receive very little precipitation, typically classifying them as deserts. However, the reason is false because cold temperatures actually lead to low humidity levels, not high humidity, which is why these areas are so dry.