Questions

Q:

How are the wait/signal operations for monitor different from those for semaphores?

Answer

If a process in a monitor signal and no task is waiting on the condition variable, the signal is lost. So this allows easier program design. Whereas in semaphores, every operation affects the value of the semaphore, so the wait and signal operations should be perfectly balanced in the program.

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Q:

Magma that reaches earth's surface and then solidifies is called

A) granite B) lava
C) quartz D) silicates
 
Answer & Explanation Answer: B) lava

Explanation:
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Filed Under: World Geography

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Q:

Logical puzzle

Dr.Will wants to operate for three different persons who were wounded. But he had only two surgical gloves. There is not any blood contact between the three persons. How can Dr.Will operate for the three people with two pair of surgical gloves?

Answer

First, Dr.Will wear both of the gloves, one above the other. He operate the first person. After finishing he remove the outer pair of gloves as inside out and place it in a tray. Then operate the second person. Now he will wear the first gloves as inside out above the second gloves. Operate the third person. At last he remove the gloves and dispose them.

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Subject: Logic Puzzles

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Q:

Which company has recently introduced 'Dura Technology' in building cars?

A) Ford B) Mitsubshi
C) GM D) Maruti-Suzuki
 
Answer & Explanation Answer: A) Ford

Explanation:
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Filed Under: Business Awareness

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Q:

Which battle established British supremacy in India?

A) The Battle of Buxar B) The Battle of Plassey
C) The Battle of Mysore D) The Battle of Samergarh
 
Answer & Explanation Answer: B) The Battle of Plassey

Explanation:

The Battle of Plassey in the year 1757, victory of British East India company over Nawab of Bengal established British supremacy in India. The victory came under the leadership of Robert Clive.

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Filed Under: Indian History
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Q:

There is a clock which shows false timing ie it shows 20 minutes less for each 1 hour. If the clock shows 12 noon now how many minutes will be lost when it shows 2 pm ?

A) 36 minutes B) 48 minutes
C) 35 minutes D) 60 minutes
 
Answer & Explanation Answer: D) 60 minutes

Explanation:

For 1 hour, 20 minutes is slower, then for
06 miuntes - 2 minutes is slower
30 minutes - 10 minutes
Actual time | false time
12 12
01 PM 12:40 PM (20 minutes slower)
02 PM 01:20 PM
03 PM 02:00 PM

So, when actual time is 3pm, the false time is 2 pm.
So, it loses 60 minutes when it shows 2 pm.

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Filed Under: Clock puzzles
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Q:

karl Landsteiner discovered

A) Blood corpuscles B) Blood groups
C) Blood vessels D) Proteins in Blood
 
Answer & Explanation Answer: B) Blood groups

Explanation:
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Filed Under: Biology

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Q:

The construction of world’s largest optical telescope has started in which country  ?

A) China B) Russia
C) Chile D) India
 
Answer & Explanation Answer: C) Chile

Explanation:

The construction of the world’s largest optical telescope has started in northern Chile, which is expected to begin operating in 2024. The Extremely Large Telescope (ELT) is being built by the European Southern Observatory (ESO) and will have a main mirror that is 39m in diameter. The telescope will be positioned on top of Cerro Armazones – a 3046-metre long mountain Chile. It will tackle a wide range of scientific challenges, including probing Earth-like exoplanets for signs of life, studying the nature of dark energy and dark matter, and observing the universe’s early stages to explore humans’ origins.

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Filed Under: Longest, Shortest, Deepest
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