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:

Which of the following is not an aerobic outdoor sport?

A) Hiking B) Swimming
C) Skydiving D) Cycling
 
Answer & Explanation Answer: C) Skydiving

Explanation:

Except skydiving all other given options swimming, hiking and cycling are aerobic outdoor sports.

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Filed Under: Sports
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Q:

What movement tried to end racial discrimination?

A) The Negro movement B) The Chipko movement
C) The Civil Rights movement D) The Feminist movement
 
Answer & Explanation Answer: C) The Civil Rights movement

Explanation:

The Civil Rights Movement :

 

The Civil Rights Movement in the United States was a struggle by black Americans to gain full citizenship rights and achieve racial equality.

Individuals and organizations challenged discrimination with a variety of activities, including protest marches, boycotts, and refusal to abide by segregation laws.

Many believe that the movement began with the bus boycott in Montgomery, Alabama, in 1955 and ended with the Voting Rights Act of 1965.

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Filed Under: World History
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Q:

Project Procurement Management - Processes

Describe the Inputs, Tools and Techniques , Outputs included in the Contract Closure?

Answer

I. Inputs



  • Procurement management plan

  • Contract management plan

  • Contract documentation

  • Contract closure procedure


II. Tools and Techniques



  • Procurement audits

  • Records management system


III. Outputs



  • Closed contracts

  • Organizational process assets (updates)

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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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Q:

Which alternative energy source is exhaustible?

A) tidal energy B) wind energy
C) solar energy D) geothermal energy
 
Answer & Explanation Answer: D) geothermal energy

Explanation:

Based on conventionality in deriving energy, energy sources could be classified as

 

Conventional ::

coal, oil, hydro, nuclear, etc... sources which can be used up or exhaustible.

(and)

Non - conventional ::

solar, wind, tidal, geothermal, biogas, etc... sources which are not exhausted.

 

Among the given options, Geothermal energy is the alternative energy source among all the choices that are given in the question, that is exhaustible.

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Filed Under: Physics
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Q:

What molecule is indicated by the letter D?

A) ATP B) Water
C) Glucose D) Oxygen
 
Answer & Explanation Answer: D) Oxygen

Explanation:

Oxygen is the final electron acceptor of cellular respiration.

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Filed Under: Chemistry
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Q:

Visible light has a higher frequency than

A) Radio waves B) X rays
C) Ultra violet D) All the above
 
Answer & Explanation Answer: A) Radio waves

Explanation:

Radio waves have much longer wavelengths and lower frequencies than do visible light waves. In contrast, X-rays have much shorter wavelengths and higher frequencies. 

Ultraviolet Light (UV). part of the electromagnetic spectrum that consists of waves with frequencies higher than those of visible light and lower than those of x-rays.

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Filed Under: Physics
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