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Q:

What is a binary semaphore?

Answer

A binary semaphore is one, which takes only 0 and 1 as values. They are used to implement mutual exclusion and synchronize concurrent processes.


 

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Subject: Operating Systems

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Q:

Southerners who were for redemption wanted which of the following?

A) remove blacks from politics B) remove republicans from politics
C) hold political power D) All of the above
 
Answer & Explanation Answer: D) All of the above

Explanation:
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Filed Under: World History
Exam Prep: AIEEE , Bank Exams
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Q:

Zoroastrianism started in what country?

Answer

Iran

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Subject: World Geography

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Q:

Groundwater is found underground in the zone of

A) Penetration B) Aeration
C) Saturation D) Both B & C
 
Answer & Explanation Answer: D) Both B & C

Explanation:

Groundwater is all the water that has penetrated the earth's surface and is found in one of two soil layers. The one nearest the surface is the "zone of aeration", where gaps between soil are filled with both air and water. Below this layer is the "zone of saturation", where the gaps are filled with water.

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Filed Under: World Geography
Exam Prep: AIEEE , Bank Exams , CAT , GATE
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Q:

In the following question, out of the four alternatives, select the alternative which is the best substitute of the phrase.


Average in amount, intensity, quality, or degree.

A) moderate B) supernatant
C) hobble D) hum
 
Answer & Explanation Answer: A) moderate

Explanation:
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Filed Under: English
Exam Prep: AIEEE , Bank Exams , CAT

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Q:

The hormone that stimulates heart beat is

A) Thyroxine B) Gastrin
C) Glycogen D) Dopamine
 
Answer & Explanation Answer: A) Thyroxine

Explanation:
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Filed Under: Biology
Exam Prep: Bank Exams

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Q:

The complexity and variety of organic molecules is due to

A) their interaction with water B) their tremendously large sizes
C) the chemical versatility of carbon atoms D) the variety of rare elements in organic molecules
 
Answer & Explanation Answer: C) the chemical versatility of carbon atoms

Explanation:

The complexity and variety of organic molecules is due to the chemical versatility of carbon atoms.

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Filed Under: Chemistry
Exam Prep: AIEEE , Bank Exams , GATE
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Q:

Which  one  of  the  following  statements  is not correct?

A) The    cathode    rays    originate    from cathode   and   proceed   towards   the anode   in   a   cathode-ray   discharge tube. B) The television picture tubes are nothing but cathode ray tubes.
C) The  cathode  rays  themselves  are  not visible. D) The   characteristics   of   cathode   rays depend  upon  the  nature  of  the  gas present in the cathode-ray tube.
 
Answer & Explanation Answer: D) The   characteristics   of   cathode   rays depend  upon  the  nature  of  the  gas present in the cathode-ray tube.

Explanation:

Cathode ray is a beam of electrons emitted   from   the   cathode   of   a vacuum    tube.    It    is    invisible. Cathode  ray  tubes  are  also  found in     televisions     and     computer monitors.  Since  cathode  ray  is  a beam of electrons and all electrons are  identical,  charge  to  mass  ratio is same for all the gases and does not depend on the nature of gas.

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Filed Under: Chemistry
Exam Prep: Bank Exams

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