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Q:

Directions : For the Assertion (A) and Reason (R) below, choose the correct alternative 

Assertion (A)   :   Most of the Himalayan rivers are perennial. 

Reason (R)      :   They are fed by melting snow. 

A) Both A and R are true and R is the correct explanation of A. B) Both A and R are true but R is NOT the correct explanation of A.
C) A is true but R is false. D) A is false but R is true.
 
Answer & Explanation Answer: A) Both A and R are true and R is the correct explanation of A.

Explanation:

Most Himalayan rivers originating in Himalayan peaks are perennial because they are fed by the melting snow throughout the year. 

 

 

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Filed Under: Assertion and Reason

Q:

The keyword which indicates that a method can be accessed by only one thread at a time is

A) Strictfp B) Synchronized
C) New D) None
 
Answer & Explanation Answer: B) Synchronized

Explanation:

The synchronized keyword indicates that a method can be accessed by only one thread at a time

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Filed Under: Java

Q:

In a single virtual machine, the Java programming language passes arguments by

A) Refference B) Value
C) Both A and B D) None
 
Answer & Explanation Answer: B) Value

Explanation:

In single virtual machine,JVM passes arguments only by value.

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Filed Under: Java

Q:

Directions : For the Assertion (A) and Reason (R) below, choose the correct alternative 

Assertion(A) :  The steam engine was invented by James Watt. 

Reason (R)   :  There was a problem of taking out water from flooded mines

A) Both A and R are true and R is the correct explanation of A. B) Both A and R are true but R is NOT the correct explanation of A.
C) A is true but R is false. D) A is false but R is true.
 
Answer & Explanation Answer: A) Both A and R are true and R is the correct explanation of A.

Explanation:

The problem of pumping out water from the flooded mines provided the need of a self working engine, which led James Watt to invent the same. 

 

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Filed Under: Assertion and Reason

Q:

By whom will the unallocated memory that is no longer needed will be cleared in java?

A) Java Virtual Machine B) Garebage collector
C) Both A and B D) None
 
Answer & Explanation Answer: B) Garebage collector

Explanation:

The Java programming language provides a system-level thread to track memory allocation.

Garbage collection has the following characteristics:

• Checks for and frees memory no longer needed

• Is done automatically

• Can vary dramatically across JVM implementations

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Filed Under: Java

Q:

The M.K.S. system was first introduced by

A) archimedes B) Eienstein
C) Newton D) Giorgi
 
Answer & Explanation Answer: D) Giorgi

Explanation:
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Filed Under: Chemistry

Q:

The substances that are composed of to or more different elements in fixed proportion by mass are called

A) mixture B) compound
C) element D) None of these
 
Answer & Explanation Answer: B) compound

Explanation:
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Filed Under: Chemistry

Q:

The law of constant proportions was enunciated by

A) Dalton B) Berthelot
C) Avogadro D) Proust
 
Answer & Explanation Answer: D) Proust

Explanation:
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Filed Under: Chemistry