Q:

In the relational model, relationships between relations or tables are created by using:

A) composite keys.	B) determinants.
C) candidate keys.	D) foreign keys.

Answer & Explanation Answer: D) foreign keys.

Explanation:

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Filed Under: Database

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Q:

Which organization created a shared economy?

A) North American Free Trade Agreements	B) Association of Southeast Asian Nations
C) World Trade Organization	D) European Union

Answer & Explanation Answer: D) European Union

Explanation:

The organization that created the shared economy is European Union.

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Filed Under: World Organisations
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Q:

Economics deals primarily with the concept of

A) Poverty	B) Money
C) Scarcity	D) Banking

Answer & Explanation Answer: C) Scarcity

Explanation:

Economics_deals_primarily_with_the_concept_of1557729122.png image

Economics deals primarily with the concept of Scarcity and choice. Scarcity is the limited availability of a commodity, which may be in demand in the market. Scarcity also includes an individual's lack of resources to buy commodities.

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Filed Under: Indian Economy
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Q:

The substances that are composed of to or more different elements in fixed proportion by mass are called

A) mixture	B) compound
C) element	D) None of these

Answer & Explanation Answer: B) compound

Explanation:

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Filed Under: Chemistry

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Q:

Who present the theory of radioactive disintegration

A) Rutherford and Soddy	B) Soddy and Fajan
C) Thomson and Rutherford	D) Hahn and strassman

Answer & Explanation Answer: A) Rutherford and Soddy

Explanation:

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Filed Under: Chemistry

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Q:

Lamarck's theory of inheritance of acquired characters was challenged by

A) August Weismann	B) Hugo de Vries
C) Herbert Spencer	D) Carl Linnaeus

Answer & Explanation Answer: C) Herbert Spencer

Explanation:

August Weismann cut off the tails of mice for 21 successive generations and still they produced generation after generation of only tailed young ones. So he concluded that acquired characters are not inherited.

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Filed Under: Biology

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Q:

Amarbel is an example of

A) parasite	B) host
C) autotroph	D) saprotroph

Answer & Explanation Answer: A) parasite

Explanation:

Amarbel is an example of parasite.

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Filed Under: Biology
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Q:

Hitendra Desai was known outstanding in which field ?

A) Literature	B) Politics
C) Journalism	D) Social Service

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