Classification MCQ Quiz - Objective Question with Answer for Classification - Download Free PDF

Prime Number→ It is a number divisible by 1 and itself.

Option 1 → 281 is a prime number.

Option 2 → 311 is a prime number.

Option 3 → 571 is a prime number.

Option 4 → 629 is not a prime number; it is divisible by 17

The Logic here is as follows:

Mean, Range, Variance, Standard deviation, and mode are part of Statistics.

Whereas, Refraction is a topic related to Physics.

Hence, the correct answer is "Refraction".

Additional Information

Mean: In mathematics and statistics, the arithmetic mean, or simply the mean or the average, is the sum of a collection of numbers divided by the count of numbers in the collection.

Range: In statistics, the Range is the difference between the lowest and highest values.

Variance: In probability theory and statistics, variance is the expectation of the squared deviation of a random variable from its mean. In other words, it measures how far a set of numbers is spread out from their average value.

Standard Deviation: In statistics, the standard deviation is a measure of the amount of variation or dispersion of a set of values.

Mode: The mode is a statistical term that refers to the most frequently occurring number found in a set of numbers.

Refraction: In physics, refraction is the change in direction of a wave passing from one medium to another or from a gradual change in the medium. Refraction of light is the most commonly observed phenomenon, but other waves such as sound waves and water waves also experience refraction.

The logic follows here is:-

Square root of each number gives a prime number, except 9.

Let's check each option:-

1) 121 = (11)² . Here 11 is prime number.

2) 81 = (9)2 . Here 9 is not prime number.

3) 169 = (13)2 . Here 13 is prime number.

4) 49 = (7)2 . Here 7 is prime number.

Hence, '81' is odd number among given alternatives.

Here the logic is:

All options are cube of a perfect number but option 3 is not a cube of perfect number.

1) 125 → ∛125 → 5

2) 729 → ∛729 → 9

3) 1321 → ∛1321 → 10.96

4) 343 → ∛343 → 7

Hence, ‘1321’ is the correct answer

The pattern followed here is:

1.  - 4 aeroplanes: 1 red, 1 blue, 1 yellow and 1 green.
2.  - 4 aeroplanes: 1 red, 1 blue, 1 yellow and 1 green.
3.  - 4 aeroplanes: red, blue, yellow and green.
4. - 4 aeroplanes: 1 red, 2 blue, and 1 green

Hence, figure D is the correct answer.

As Goggles, spectacles and Bifocals are worn by human beings but Optical reader is not worn , It is a device found within most computer scanners that captures visual information and translates the image into digital information the computer is capable of understanding and displaying. 

Hence, option 4 is the correct answer.

Here all the polygon are of odd number of sides except hexagone.

Hendecagon is a polygon of 11 sides, Heptagon is a polygon of 7 sides and Pentagon is a polygon of 5 sides.

Only Hexagon is an odd one here as it has even number of sides i.e. 6 sides.

Hence, option 2 is the correct answer.

The logic followed here is:

All the numbers except option (3), the given numbers are the multiple of 11. 

Option1: 2321 → Multiple of 11

Option2: 825 → Multiple of 11

Option3: 1521 → Not a multiple of 11

Option4: 968 → Multiple of 11

Therefore, 1521 is the odd one option.

Important Points

• The priority will always be the prime number in the exams.
• There are some standard rules which need to be followed while selecting the priority.
• priority lists to be followed in exams according to their preferences are:

1. Prime number.
2. Square.
3. Cube.
4. Multiplication and divisions
5. Addition and subtraction.

• A prime number can be divided, without a remainder, only by itself and by 1.
• Some facts about the Prime numbers:

1. The only even prime number is 2. All other even numbers can be divided by 2.
2. If the sum of a number's digits is a multiple of 3, that number can be divided by 3.
3. No prime number greater than 5 ends in a 5. Any number greater than 5 that ends in a 5 can be divided by 5.
4. Zero and 1 are not considered prime numbers.
5. Except for 0 and 1, a number is either a prime number or a composite number. A composite number is defined as any number, greater than 1, that is not prime.

The odd one out is Spinach. As onion, radish and turnip grow underground but spinach doesn't grow underground.

Hence, option 1 is the correct answer.

Logic: For all the other option sum of place value is 40 e×cept “EKO”

Logic: In the options the adding the number and place value of letter is 20.

1) P4 → 16 + 4 = 20

2) S2 → 19 + 2 = 21

3) O5 → 15 + 5 = 20

4) I11 → 09 + 11 = 20.

The logic followed is:

All the others are correctly matched except Bharatanatyam which is the classical dance of Tamil Nadu, not Andhra Pradesh. 

Hence, the correct answer is "Bharatanatyam : Andhra Pradesh".

Additional Information

 List of all Classical Dances of India:

1. Bharatanatyam, from Tamil Nadu.

2. Kathak, from Uttar Pradesh.

3. Kathakali, from Kerala.

4. Kuchipudi, from Andhra Pradesh.

5. Odissi, from Odisha.

6. Sattriya, from Assam.

7. Manipuri, from Manipur.

8. Mohiniyattam, from Kerala.

By checking options:

(1) Sky : Cloud → Cloud is not a type of Sky. 

(2) Purse : Wallet → Wallet is a type of Purse.

(3) Cupboard : Almirah → Almirah is a type of Cupboard.

(4) Chair : Stool → Stool is a type of Chair.

Hence, Sky : Cloud is the odd one out.

The pattern followed here is:

According to the alphabetical positions of the letters,

1) SUWY → S + 2 = U; U + 2 = W; W + 2 = Y

2) YACF → Y + 2 = A; A + 2 = C; C + 2 = E ≠ F

3) LNPR → L + 2 = N; N + 2 = P; P + 2 = R

4) ZBDF → Z + 2 = B; B + 2 = D; D + 2 = F

Hence, 'YACF' is the odd one out.

All options except 'herd' are names of different types of construction made by humans so that they can stay/live under them, while 'herd' refers to a large number of animals that live and feed together.

Hence, 'herd' is the odd one out.