GATE Questions

Q:

What is an error in a program called

A) Power fail B) Crash
C) Virus D) Bug
 
Answer & Explanation Answer: D) Bug

Explanation:

In computer technology, a coding error in a computer program is called a bug.

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Q:

The term hierarchy refers to

A) a team in which everyone is equal and has to pull his or her own weight B) a power structure in which each member knows his or her own place
C) a situation in which higher species such as men will always be in control of lower species such as animals D) a condition in which the weak must die so the strong can survive
 
Answer & Explanation Answer: B) a power structure in which each member knows his or her own place

Explanation:

Hierarchy is a system of ranking in which members of a particular society are ranked in an ascending order depending on various factors.

 

Hence, the term hierarchy refers to a power structure in which each member knows his or her own place.

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Q:

Solve the values?

solve_puzzle1547893377.jpg image

A) P=0, Q=8, R=1 B) P=0, Q=9, R=1
C) P=1, Q=9, R=0 D) P=0, Q=9, R=0
 
Answer & Explanation Answer: D) P=0, Q=9, R=0

Explanation:

By trial and error method,

P=0, Q=9, R=0 satisfies the values.

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Q:

What is the bond order of O2?

A) 1.5 B) 2
C) 2.5 D) 1
 
Answer & Explanation Answer: B) 2

Explanation:

The number of bonds between a pair of atoms is called the bond order.

Bond orders can be calculated from Lewis structures, which are the heart of the valence-bond model. Oxygen, for example, has a bond order of two.

Structure

When there is more than one Lewis structure for a molecule, the bond order is an average of these structures. The bond order in sulfur dioxide, for example, is 1.5  the average of an S-O single bond in one Lewis structure and an S=O double bond in the other.

Structures

In molecular orbital theory, we calculate bond orders by assuming that two electrons in a bonding molecular orbital contribute one net bond and that two electrons in an antibonding molecular orbital cancel the effect of one bond. We can calculate the bond order in the O2 molecule by noting that there are eight valence electrons in bonding molecular orbitals and four valence electrons in antibonding molecular orbitals in the electron configuration of this molecule. Thus, the bond order is two.

Equation

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Q:

Ornate is the opposite of

A) Offensive B) Elegant
C) Fancy D) Lavish
 
Answer & Explanation Answer: A) Offensive

Explanation:

Ornate means which is beautiful, lavish one. Opposite of Ornate is ugly, offensive, dull or plain.

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Q:

21% of 500 + 31% of 1100 - 30% of 790 = ? 

A) 209 B) 290
C) 309 D) 390
 
Answer & Explanation Answer: A) 209

Explanation:

Given 21% of 500 + 31% of 1100 - 30% of 790 = ?

 

? = 21 x 5 + 31 x 11 - 3 x 79

? = 105 + 341 - 237

? = 446 - 237

? = 209.

 

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Q:

(3x + 2) (2x - 5) = ax² + kx + n. What is the value of  a - n + k ?

A) 4 B) 1
C) 5 D) 3
 
Answer & Explanation Answer: C) 5

Explanation:

(3x + 2) (2x - 5) = ax2+kx+n ...............(1)

 

But (3x + 2)(2x - 5) = 6x2-11x-10........(2)

 

so by comparing (1) & (2),

 

we get a= 6, k= -11 , n= -10

 

(a - n + k) = 6 + 10 - 11 = 5.

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Q:

Solve this math logical puzzle

how_many_total_digits1560511557.jpg image

A) 192 B) 180
C) 196 D) 189
 
Answer & Explanation Answer: A) 192

Explanation:

Pages are denoted as 

1 - 9 = 09

10 - 99 = 90*2 = 180

100 = 03

 

Hence, total number of digits = 09 + 180 + 03 = 192.

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