Solution:

Explanation:  

• Sustainable development is the idea that human beings should sustain themselves by meeting their basic needs and ensuring that future generations can meet their basic needs.
• Sustainable development is essential because it balances countries' economic growth and humanity.
• Today is fear of overuse or complete exhaustion of these limited natural resources. 
• In an economic growth, the damage is being caused to the environment and ecology, which ultimately will create insecurity for human beings.
• Careful use of resources needed by the present generation and a reserve for future generations.
• Humans are overusing renewable resources like groundwater.
• The problem of soil degradation is because of overusing chemical fertilizers.
• Coal, petrol, and natural gas are non-renewable resources limited in stock.
• It can take thousands of years to be replenished.

Final Answer:

• Sustainable development is essential because stocks of natural resources are limited.
• Natural resources are exhausted by humans for economic development.
• In an economic growth, the damage is being caused to the environment and ecology, which ultimately will create insecurity for human beings.
• Careful use of resources needed by the present generation and a reserve for future generations.

A: ATM cards

B: plastic - coated currency notes

C: foreign currency notes

D: traveler's cheque

Solution:

Correct Option is: (A)

ATM cards

Explanation: 

• Plastic money is a term that is used principally to desribe the thick plastic cards we use every day in place of actual cash amounts. 
• The first kind of plastic money was credit cards and debit cards. 
• These two types of cards are both considered to be plastic money because they are made from plastic and can be used to buy things without having actual cash on hand. 
• These are also made out of hard plastic and can be used to purchase products or services instead of having cash on hand.
• The hard plastic cards can be used in place of printed paper notes.
• For example, Automated teller machine (ATM) cards like credit cards and debit cards are electronic-generated cards that are used for buying goods and services.

Solution:

Explanation:

A price line is a graphical representation of the various combinations of two commodities that an individual can purchase within a particular income level. 

At each level on the price line, the total cost of the two commodities equals the income earned by the individual. 

The price line is also known as the budget line.

The slope of the budget line  or the price line is equal to the ratio of the prices of the commodities taken on each of the axis.

Final Answer:

A price line is a graphical representation of the various combinations of two commodities that an individual can purchase within a particular income level.

HDI stands for ?

A: Human Resource Depreciation Index

B: Human Development Index

C: Human Resources Development Index

D: None of these.

Solution:

Correct Answer is B. 

Explanation:

Human Development Index is published by United Nations Development Programme every year since 1990.

It is a composite statistic of life expectancy, education, and income per capita indicators, which are used to rank countries into four tiers of human developmen 

 Hence HDI stands for Human Development Index.

of  conc H₂S0₄   Also  write  chemical  equation for  the reaction  stating the role of cone. H₂S0₄ in it

Solution:

Conc. H₂SO₄ acts as a dehydrating agent.