Questions

Q:

When a piece of pure silicon is doped with aluminium, then

A) the conductivity of the doped silicon piece will remain the same B) the doped silicon piece will become n-type
C) the doped silicon piece will become p-type D) the resistivity of the doped silicon piece will increase
 
Answer & Explanation Answer: C) the doped silicon piece will become p-type

Explanation:

p type of semiconductor is obtained when Silicon is doped with a trivalent impurity like Aluminium. Aluminium is a p-type dopant, which means that when a semiconductor i.e. silicon is doped with aluminium, it creates a hole (positively charged carrier) by accepting an electron from the silicon atom. Electrical conductivity of semiconductors increasesand resistivity remains the same

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Filed Under: Physics
Exam Prep: Bank Exams

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Q:

Dry ice is an example of which process

A) Condensation B) Evaporation
C) Sublimation D) Freezing
 
Answer & Explanation Answer: C) Sublimation

Explanation:

Sublimation is a process when a solid changes directly into gas instead changing into liquid first. Dry ice is an example of Sublimation process because it doesn't change into liquid CO2 and directly change into gaseous CO2 when heated.

 

Hence, Dry ice is an example of Sublimation process. 

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Filed Under: General Awareness
Exam Prep: AIEEE , Bank Exams , CAT , GATE
Job Role: Analyst , Bank Clerk , Bank PO , IT Trainer

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Q:

Which among the following migratory bird species migrates from Arctic to Antarctica every year, making it longest migratory route on nearth?

A) Arctic Tern B) Black necked swan
C) Bobolink D) American Robin
 
Answer & Explanation Answer: A) Arctic Tern

Explanation:
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Filed Under: World Geography

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Q:

The largest herbarium of India is located at

A) Kolkata B) Lucknow
C) Mumbai D) Coimbatore
 
Answer & Explanation Answer: A) Kolkata

Explanation:
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Filed Under: Indian Geography

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Q:

Which of the following events of World History marked the beginning of the Second World War?

A) Invasion of Poland by German armies B) Occupation of Latvia , Estonia and Lithuania by the soviet Union
C) War against Finland declared by the USSR D) The period of 'Phoney war"
 
Answer & Explanation Answer: A) Invasion of Poland by German armies

Explanation:

On 1 september 1939 German armies marched into poland. On 3 September Britain and France declared war on Germany.Thus the invasion of poland marked the beginning of the Second World War. The German armies completed the conquest of poland in less than three weeks as no aid reached poland. In spite of the declaration of war, however, there was little actual fighting for many months. Therefore, the war during the period from  september 1939 to April 1940 when germany invaded Narway and Denmark is known as the "Phoney War"

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Filed Under: World History

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Q:

Which is India's Largest BPO (Business Process Outsourcing) Company?

A) Piogeon B) Spectramind
C) Technovate D) None of these
 
Answer & Explanation Answer: B) Spectramind

Explanation:
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Filed Under: Business Awareness

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Q:

What word in the English language is always spelled incorrectly?

A) Schezwan B) Yorker
C) Incorrectly D) Psycologically
 
Answer & Explanation Answer: C) Incorrectly

Explanation:

INCORRECTLY is the only English word which is always spelled incorrectly.

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Q:

Where can an advertiser change the location targeting of an ad?

Answer

Location targeting is set at the campaign level.

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