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Solution
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Q.21 Correct
Q.21 In-correct
Q.21 Unattempt
S1: Although all sources of energy commonly come from natural processes, non-renewable resources, are being rapidly depleted and at the rate they are being used.
S6: The sustainable use of natural resources in a manner that provides for resource needs for current resources for humans over a period of time can be termed as con- servation.
P: This will increase the time and cost of mining and once these resources are used up they cannot be replaced.
Q: Hence, we must remember that though our country is rich in natural deposits these resources are not.
R: Extraction of these ores through the process of mining will soon become difficult and also expensive because these minerals are often located deep from greater depths over time.
S: Mineral resources can be said to be finite and non-renewable.
S1: Although all sources of energy commonly come from natural processes, non-renewable resources, are being rapidly depleted and at the rate they are being used.
S6: The sustainable use of natural resources in a manner that provides for resource needs for current resources for humans over a period of time can be termed as con- servation.
P: This will increase the time and cost of mining and once these resources are used up they cannot be replaced.
Q: Hence, we must remember that though our country is rich in natural deposits these resources are not.
R: Extraction of these ores through the process of mining will soon become difficult and also expensive because these minerals are often located deep from greater depths over time.
S: Mineral resources can be said to be finite and non-renewable.
Q.23 Correct
Q.23 In-correct
Q.23 Unattempt

S1: National highways connect one state will another and are of national importance.
S6: These road systems are also known as primary road systems and are laid and operated under the National Highway Authority of India.
P: There are important because while others are built to connect 75 per cent of the total road networks, they carry 40 per cent of the total road traffic.
Q: The infrastructure of the country is therefore crucial, and the development and maintenance is of critical importance.
R: This is due to the traffic because these roads connect long distances and pass through many cities and towns.
S: Since they cover the length and breadth of the country and link cities and towns, these highways are the primary facilitators of trade and connectivity.

S1: National highways connect one state will another and are of national importance.
S6: These road systems are also known as primary road systems and are laid and operated under the National Highway Authority of India.
P: There are important because while others are built to connect 75 per cent of the total road networks, they carry 40 per cent of the total road traffic.
Q: The infrastructure of the country is therefore crucial, and the development and maintenance is of critical importance.
R: This is due to the traffic because these roads connect long distances and pass through many cities and towns.
S: Since they cover the length and breadth of the country and link cities and towns, these highways are the primary facilitators of trade and connectivity.

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