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Q:

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

Assertion (A) : Bats can fly in the night.

Reason (R) : Bats emit ultrasonics.

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:

Bats can fly in the night because they can trace the obstacle in the path by perceiving the echo of the ultrasonic sound emitted by them after it is reflected by the obstacle.

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Filed Under: Assertion and Reason

Q:

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

Assertion (A) : An atom is neutral despite the charged particles in it.

Reason (R) : The neutrons do not have any charge.

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: B) Both A and R are true but R is NOT the correct explanation of A.

Explanation:

An atom contains the positively charged protons and an equal number of negatively charged electrons So, it is neutral

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Filed Under: Assertion and Reason

Q:

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

Assertion (A) : Carbon monoxide when inhaled causes death.

Reason (R) : Carbon monoxide combines with haemoglobin.

A) Both A and R are true and R is the correct explanation of A.	B) Both A and It 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:

Carbon monoxide, when inhaled, combines with haemoglobin of blood to form carboxyhaemoglobin which inhibits the transport of oxygen.

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Filed Under: Assertion and Reason

Q:

Of the following tree structure, which is, efficient considering space and time complexities?

A) Incomplete Binary Tree	B) Complete Binary Tree
C) Full Binary Tree	D) None

Answer & Explanation Answer: B) Complete Binary Tree

Explanation:

Full binary tree loses its nature when operations of insertions and deletions are done. For incomplete binary trees, extra storage is required and overhead of NULL node checking takes place. So complete binary tree is the better one since the property of complete binary tree is maintained even after operations like additions and deletions are done on it.

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Filed Under: Software Testing

Q:

In tree construction which is the suitable efficient data structure?

A) Array	B) Linked list
C) Stack	D) Queue

Answer & Explanation Answer: B) Linked list

Explanation:

Linked list is the efficient datastructure in tree construction

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Filed Under: C++

Q:

A binary tree with 7 nodes will have how many null branches?

A) 6	B) 7
C) 8	D) 5

Answer & Explanation Answer: C) 8

Explanation:

A binary tree with n nodes has exactly n+1 null nodes

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Filed Under: C++

Q:

Which of the following methods doesn't use sorting?

A) Insertion	B) Deletion
C) Exchange	D) Selection

Answer & Explanation Answer: A) Insertion

Explanation:

Using insertion we can perform insertion sort, using selection we can perform selection sort, using exchange we can perform the bubble sort.But by using deletion we cannot perform any sort.

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Filed Under: C++

Q:

Which among the following are not access Specifiers in C++?

A) Public	B) Protected
C) Default	D) Private

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