Questions

Q:

What is context switching?

Answer

Transferring the control from one process to other process requires saving the state of the old process and loading the saved state for new process. This task is known as context switching.

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Q:

Processor's speed of a computer is measured in

A) Hertz B) Baud
C) MIPS D) BPS
 
Answer & Explanation Answer: A) Hertz

Explanation:

CPU speed is the central factor in a computer's performance. And this CPU speed depends on the processor in the CPU chip. In a computer, clock speed refers to the number of pulses per second generated by an oscillator that sets the tempo for the processor. Clock speed is usually measured in Hertz (Hz).

 

But now-a-days, a pure processor's performance is measured in MIPS (Millions of Instructions Per Second). As here in the question, how a processor's speed is measured is asked and it is Hertz. 

 

Hence, Processor's speed of a computer is measured in Hertz(Hz) [MHz, GHz].

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Q:

In a certain city, 5% of all the persons in town have unlisted phone numbers. If you select 100 names at random from that city's phone directory, how many people selected will have unlisted phone numbers?

Answer

  Zero. You are selecting names from the list, so they are all listed.

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Subject: Math Puzzles

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Q:

Why is Golden Rice pale yellow in color?

A) Rich in Beta-Carotene B) Rich in Phycobilins
C) Rich in Chlorophyll D) None
 
Answer & Explanation Answer: A) Rich in Beta-Carotene

Explanation:

Golden Rice (Oryza sativa) denotes a genetically modified rice capable of biosynthesizing and accumulating β-carotene (provitamin A) in the endosperm, yielding a characteristic yellow color in the polished grains. Golden rice was developed to help cope with vitamin A deficiency, a problem that prevails in developing countries, affecting millions (Underwood, 2000; UNICEF, 2000). Vitamin A deficiency causes mortality and growth retardation in children and frequently impairs vision, leading to blindness. It also contributes indirectly to anemia by interfering with iron bioavailability.

 

The endosperm of Golden Rice (Oryza sativa) is yellow due to the accumulation of β-carotene (provitamin A) and xanthophylls. The product of the two carotenoid biosynthesis transgenes used in Golden Rice results in Pale Yellow color.

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Filed Under: General Science
Exam Prep: AIEEE , Bank Exams
Job Role: Bank PO

13 7482
Q:

A device used for the measurement of radioactivity is

A) mass spectrometer B) cyclotron
C) nuclear reactor D) G.M.counter
 
Answer & Explanation Answer: D) G.M.counter

Explanation:
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Filed Under: Chemistry

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Q:

Classical dance 'Mohiniattam' belongs to which state ?

A) Tamilnadu B) Andhra Pradesh
C) Manipur D) Kerala
 
Answer & Explanation Answer: D) Kerala

Explanation:
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Filed Under: Indian Culture
Exam Prep: AIEEE , Bank Exams , CAT
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76 7480
Q:

Who Invented Worldwide Standard Time Zones ?

A) Charles Richard Drew B) Henry W. Seely
C) Jesse Wilford Reno D) Sir Sandford Fleming
 
Answer & Explanation Answer: D) Sir Sandford Fleming

Explanation:
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Filed Under: Inventions

4 7478
Q:

Who prepares the topographical maps of India?

A) Defence Ministry B) Geological Survey of India
C) Survey of India D) Geographical Survey of India
 
Answer & Explanation Answer: C) Survey of India

Explanation:

Survey of India publishes maps and the unrestricted category maps can be obtained at very affordable prices from its several Geospatial data centers. Restricted category maps require due approval from government authorities. Many other rules govern the sale and use of Survey of India maps. Only an Indian citizen may purchase topographic maps and these may not be exported from India for any reason.

 

The Survey of India is India's central engineering agency in charge of mapping and surveying, set up in 1767. Its members are from Survey of India Service cadre of Civil Services of India. It is headed by the Surveyor General of India.

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

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