Questions

Q:

The Study of Universe is called

A) Universology B) Cosmetology
C) Petology D) Cosmology
 
Answer & Explanation Answer: D) Cosmology

Explanation:

Cosmology is the scientific study of the large scale properties of the universe as a whole. It endeavors to use the scientific method to understand the origin, evolution and ultimate fate of the entire Universe.

Depending on the outcome of the observations, the theories will need to be abandoned, revised or extended to accommodate the data. The prevailing theory about the origin and evolution of our Universe is the so-called Big Bang theory.

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Q:

'River' Brand of MP3 player has been launched in india  by Salora International. The Brand which is competing with apple's ipod is owned by which company?

A) ReignCom B) TEAc
C) Toshiba D) Panasonic
 
Answer & Explanation Answer: A) ReignCom

Explanation:
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Filed Under: Business Awareness

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Q:

Explain the concept of Reentrancy?

Answer

It is a useful, memory-saving technique for multiprogrammed timesharing systems. A Reentrant Procedure is one in which multiple users can share a single copy of a program during the same period. Reentrancy has 2 key aspects: The program code cannot modify itself, and the local data for each user process must be stored separately. Thus, the permanent part is the code, and the temporary part is the pointer back to the calling program and local variables used by that program. Each execution instance is called activation. It executes the code in the permanent part, but has its own copy of local variables/parameters. The temporary part associated with each activation is the activation record. Generally, the activation record is kept on the stack.


Note: A reentrant procedure can be interrupted and called by an interrupting program, and still execute correctly on returning to the procedure.

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Q:

Speed in a given direction is called

A) Velocity B) Torque
C) Acceleration D) Displacement
 
Answer & Explanation Answer: A) Velocity

Explanation:

Speed in a given direction is called Velocity.

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Filed Under: Physics
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Q:

Memory is made up of

A) Large number of cells B) Set of wires
C) Set of circuits D) None of the above
 
Answer & Explanation Answer: A) Large number of cells

Explanation:

In computing, memory refers to the computer hardware integrated circuits that store information for immediate use in a computer.

Most semiconductor memory is organized into memory cells or bistable flip-flops, each storing one bit (0 or 1).

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Filed Under: Computer
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Q:

Per Captain Income of a country derived from

A) National Income B) Population
C) National Income and Population both D) none of these
 
Answer & Explanation Answer: C) National Income and Population both

Explanation:
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Q:

The smallest country of the world is

A) Italy B) Vatican city
C) Brazil D) Canada
 
Answer & Explanation Answer: B) Vatican city

Explanation:
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Filed Under: World Geography

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Q:

A container contains 165 litres of milk. Some quantity of milk is taken out and half of that quantity of milk, water is added in the container. Now ratio of milk to water in the container becomes 5:3. What is the quantity of water added in it?

A) 40 litre B) 45 litre
C) 60 litre D) 30 litre
 
Answer & Explanation Answer: B) 45 litre

Explanation:

Let amount of milk removed = 2x litre
So, amount of water added = x litre
Now → (165 − 2x)/x = 5/3
x = 45 lit

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