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Q:

The first effective vaccine against polio was prepared by ?

A) Robert Edwards B) James Simpson
C) H Gibbon D) Jonas E Salk
 
Answer & Explanation Answer: D) Jonas E Salk

Explanation:
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Filed Under: Inventions
Exam Prep: AIEEE
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Q:

A data dictionary is a special file that contains

A) The width of all fields in all files B) The data type of all fields in all file
C) The name of all fields in all files D) All of the above
 
Answer & Explanation Answer: D) All of the above

Explanation:

A data dictionary is a special file that contains a set of information describing the contents, format, and structure of a database and the relationship between its elements, used to control access to and manipulation of the database.

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Filed Under: Database
Exam Prep: Bank Exams
Job Role: Analyst , Bank Clerk , Database Administration , IT Trainer

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Q:

What is difference between ARP and RARP?

Answer

The address resolution protocol (ARP) is used to associate the 32 bit IP address with the 48 bit physical address, used by a host or a router to find the physical address of another host on its network by sending a ARP query packet that includes the IP address of the receiver.


The reverse address resolution protocol (RARP) allows a host to discover its Internet address when it knows only its physical address

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Subject: Networking
Job Role: Network Engineer

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Q:

When a steel ball is placed on the surface of mercury, it does not sink because

A) of the surface tension of mercury B) mercury is a semisolid
C) of the high viscosity of mercury D) the density of mercury is greater than that of steel
 
Answer & Explanation Answer: D) the density of mercury is greater than that of steel

Explanation:

A solid sinks in a liquid if its density is greater than that of the liquid. if less, it floats

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Filed Under: Physics

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Q:

Water kept in an earthen pot is less cool on rainy days than in summer because during the rainy days 

A) the pores in the pot are closed B) rain water stops oozing out from the pores
C) the water that oozes out does not evaporate quickely because of the large percent age of moisture in the air D) surface of the pot becomes damp
 
Answer & Explanation Answer: C) the water that oozes out does not evaporate quickely because of the large percent age of moisture in the air

Explanation:

To evaporate the water that oozes out, heat is required. Part of this heat is taken from the water inside which therefore become cool. Therefore (C) is correct. Here evaporation is less, so cooling too is less.

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Filed Under: Physics

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Q:

The book ' Gullivers Travels ' was written by

A) Charles Lamb B) Charles Dickens
C) Alexander Dumas D) Jonathan Swift
 
Answer & Explanation Answer: D) Jonathan Swift

Explanation:
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Filed Under: Books and Authors

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Q:

What is the capital of china?

A) Santiago B) Beijing
C) Havana D) None
 
Answer & Explanation Answer: B) Beijing

Explanation:

 capital of china is Beiging

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Filed Under: Country Capitals

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Q:

Which compound forms a colored aqueous solution?

A) CrCl3 B) KBr
C) CaCl2 D) NaOH
 
Answer & Explanation Answer: A) CrCl3

Explanation:

Colored aqueous solutions are a characteristic of transition compounds.

The only transition compound in the above choices is CrCl3.

Cr is a transition element.

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Filed Under: Chemistry
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Job Role: Analyst

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