GATE Questions

Q:

What is the IUPAC name for the following compound?

 

H3C-CC-H

A) Acetylene B) Methyl acetylene
C) Butanol D) Decanoic Acid
 
Answer & Explanation Answer: B) Methyl acetylene

Explanation:

The IUPAC name of the compound is Methyl Acetylene or Propyne.

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Q:

Find the next number in the given number sequence?

101, 98, 93, 86, 75, ?

A) 62 B) 68
C) 71 D) 73
 
Answer & Explanation Answer: A) 62

Explanation:

The given number sequence is 101, 98, 93, 86, 75, ?

101

101 - 3 = 98

98 - 5 = 93

93 - 7 = 86

86 - 11 = 75

75 - 13 = 62

 

Here the series follows a pattern that consecutive subtraction of prime numbers.

 

Hence, the next number in the sequence is 62.

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9 121975
Q:

Antonym of the given word

abet 

A) Risk B) Pacify
C) Aid D) Prevent
 
Answer & Explanation Answer: D) Prevent

Explanation:
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8 121930
Q:

Give the common name for the following compound

CH32CH CH2 - Br

A) Isobutyl bromide B) Methyl bromide
C) Propyl bromide D) Butyl bromide
 
Answer & Explanation Answer: A) Isobutyl bromide

Explanation:
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7 120206
Q:

What is the next letter of the following sequence.


N , O , M , P , L , Q , K , R , ?

A) S B) I
C) J D) T
 
Answer & Explanation Answer: C) J

Explanation:

Here the series has mixed two series.
n m l k...! reverse alphabet
o p q r ...! forward alphabet
So the letter before k is j and after that letter after r is s and so on...

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Filed Under: Alphabet Test
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16 119637
Q:

What is the output of this program ?

class main_arguments {
            public static void main(String [ ] args)
            {
                String [][] argument = new String[2][2];
                int x;
                argument[0] = args;
                x = argument[0].length;
                for (int y = 0; y < x; y++)
                    System.out.print(" " + argument[0][y]);           
            }
        }

A) 1 1 B) 1 0
C) 1 0 3 D) 1 2 3
 
Answer & Explanation Answer: D) 1 2 3

Explanation:

In argument[0] = args;, the reference variable arg[0], which was referring to an array with two elements, is reassigned to an array (args) with three elements.
Output:
$ javac main_arguments.java
$ java main_arguments
1 2 3

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31 119388
Q:

Find the missing number in the given number series?

625, 625, 600, ?, 475, 875

A) 545 B) 700
C) 675 D) 725
 
Answer & Explanation Answer: B) 700

Explanation:

Here the given number series 625, 625, 600, ?, 475, 875 follows a pattern that

625

625 + (0 x 0) = 625

625 - (5 x 5) = 625 - 25 = 600

600 + (10 x 10) = 600 + 100 = 700

700 - (15 x 15) = 700 - 225 = 475

475 + (20 x 20) = 475 + 400 = 875

 

Hence, the missing number in the given number series is 700.

 

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15 119372
Q:

Find the odd one out?

6, 3, 3, 4.5, 10

A) 3 B) 4.5
C) 6 D) 10
 
Answer & Explanation Answer: D) 10

Explanation:

Here the given number series is 6, 3, 3, 4.5, 10

The odd one in the given series is 10

The pattern it follows is

6

6 x 0.5 = 3

3 x  1  = 3

3 x 1.5 = 4.5

4.5 x 2 = 9

 

Hence, the odd number is 10.

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7 118975