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331.

Workers in the tertiary economic activities are called:

A.	Pink-collar work force	B.	Blue-collar work force
C.	Red-collar work force	D.	None of these

332.

Workers in quaternary services are called:

A.	Blue-collar work force	B.	Gold-collar work force
C.	White-collar work force	D.	None of these

333.

High order Research, Analysis and Management services comi under title of:

A.	White-collar work jobs	B.	Gold-collar work jobs
C.	Pink-collar work jobs	D.	None of these

334.

The main area of Primitive subsistence agriculture:

A.	North America	B.	South America
C.	Middle East	D.	Central Africa

335.

Number of the people attached to primitive subsistence agriculture around the world:

A.	200 million	B.	300 million
C.	400 million	D.	None of these

336.

The process of wind erosion in which loose particles are lifted up in the air is called:

A.	Attrition	B.	Abrasion
C.	Deflation	D.	None of these

337.

When wind carrying small particles strikes against an exposed rock, it is worn away. This is known as:

A.	Deflation	B.	Abrasion
C.	Attrition	D.	None of these

338.

When wind lifts a big mass of sand from a particular area and desposits it somewhere else creating a depression in sandy areas/those depressions are called:

A.	Hamada	B.	Deflation hollow
C.	Loess	D.	None of these

339.

Breaking of coarse hard particles into smaller pieces through collision with one another:

A.	Abrasion	B.	Deflation
C.	Attrition	D.	None of these

340.

Mushroom rock feature is example of:

A.	Erosional feature of wind	B.	Depositional feature of wind
C.	None of these