Please select a subject first
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What are the features of perfect competition.
Concept: Forms of Market
Distinguish between:
Price Index and Quantity Index.
Concept: Types of Index Numbers
Define or explain the following concept:
National income
Concept: Concept of National Income
Distinguish between Surplus budget and Deficit budget.
Concept: Types of Budget
Explain various reasons for the growth of public expenditure.
Concept: Public Expenditure > Reasons for Growth in Public Expenditure
Distinguish between internal debt and external debt.
Concept: Structure of Public Finance > Public Debt
State and explain the ‘law of demand’ with its exceptions.
Concept: Demand Curve and Its Slope
What is the elasticity of demand?
Concept: Elasticity of Demand
Distinguish between Desire and Demand.
Concept: Demand
What are the features of perfect competition.
Concept: Forms of Market
Define or explain the following concept:
National income
Concept: Concept of National Income
Distinguish between the following.
Standard coins and Token coins.
Concept: Money - Store of Value
Distinguish between Surplus budget and Deficit budget.
Concept: Types of Budget
(A) Read the following extract and answer the questions given below :
Oil is one of the world's major sources of energy. We depend on it as fuel for heating, transport, and generation of power.
For centuries, animal and vegetable oils have been used for cooking and as a source of artificial light. But it is mineral oil which meets most of the world's needs today.
Crude mineral oil comes out of the earth as a thick brown or black liquid with a strong smell. It is a complex mixture of many different substances, each with its own individual qualities. Most of them are combinations of hydrogen and carbon in varying proportions. Such hydrocarbons are also found in other forms such as bitumen, asphalt and natural gas. Mineral oil originates from the carcasses of tiny animals and from plants that live in the sea. Over millions of years, these dead creatures form large deposits under the sea bed and ocean currents cover them with a blanket of sand and silt. As this material hardens, it becomes sedimentary rock and effectively shuts out the oxygen so preventing the complete decomposition of the marine deposits underneath. The layers of sedimentary rock become thicker and heavier. Their pressure produces heat, which transforms the tiny carcasses into crude oil in a process that is still going on today.
The earth's crust is split into a few hu·ge continental plates which move continuously rather like rafts on a sluggish tide. Geologists call this rnoven1ent as 'continental drift'.
(1) What does the extract ·tell us about?
(2) In which form does crude mineral oil come out of the earth and from what does it originate?
(3) How is 'continental drift' formed?
(4) According to you, how can we stop the excessive use of energy?
(5) Rewrite the following sentences in the ways instructed :
(i) Oil is one of the world's major sources of energy.
(Rewrite it as a negative sentence without changing its meaning.)
(ii) As this material hardens, it becomes sedimentary rock.
(Make it a compound sentence.)
(iii) Geologists call this movement 'con·tinental drift'.
(Frame a 'Wh-question' to get the underlined part as an answer.)
(6) Give the antonyms from the extract for :
(i) artificial
(ii) lighter
(B) Write·a brief summary of the above extract with the help of the points given below and suggest a suitable title.
Oil as a source of energy - our dependence - types of oil -mineral oil origin of crude oil formation of crude oil-farming of sedimentary rocks - continental drift
Concept: Summary Writing
Do as directed :
He wanted to become _____ artist and live in ____ Himalayas.
(Fill in the blanks with the appropriate articles.)
Concept: Articles - A, An, The
Do as directed :
She was able to talk ____ the group______ her experience.
(Fill in the blanks with suitable prepositions.)
Concept: Parts of Speech > Preposition
Do as directed:
"Why are you crying?" said the woman to a little boy.
"I want a balloon," he said.
(Change it into Indirect Speech.)
Concept: Direct-Indirect Speech
Fill in the blank with appropriate article
J.R.D. Tata was an amazing personality. He always helped _______ poor in the country.
Concept: Articles - A, An, The
Do as directed :
They stood_______ silence as a mark honour to her._______
(Fill in the blanks with suitable prepositions.)
Concept: Parts of Speech > Preposition
Do as directed :
''Where are you going?'' he asked. ''Pune, Sir, my husband is starting a company called Infosys and I'm shifting to Pune.''
(Change it into Indirect speech.)
Concept: Direct-Indirect Speech
