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Question

Select the correct option that indicates the arrangement of the
following words in a logical and meaningful order.
1. Micro
2. Hecto
3. Nano
4. Kilo
5. Mili

This question was previously asked in
SSC Selection Post 2024 Question Paper (26-Jun-2024) (Shift-4)
The correct answer is
3, 1, 5, 2, 4

Understanding the Logical Order of SI Prefixes

The question asks us to arrange a list of SI prefixes in a logical and meaningful order. Typically, this means ordering them by their magnitude, usually from smallest to largest.

Analyzing the SI Prefixes

Let's identify the SI prefixes given and their corresponding values:

  • 1. Micro: Represents $ 10^{-6} $ (one millionth)
  • 2. Hecto: Represents $ 10^{2} $ (one hundred)
  • 3. Nano: Represents $ 10^{-9} $ (one billionth)
  • 4. Kilo: Represents $ 10^{3} $ (one thousand)
  • 5. Mili: Represents $ 10^{-3} $ (one thousandth)

Table of SI Prefixes and Values

Word SI Symbol Value Number
Micro $ \mu $ $ 10^{-6} $ 1
Hecto h $ 10^{2} $ 2
Nano n $ 10^{-9} $ 3
Kilo k $ 10^{3} $ 4
Mili m $ 10^{-3} $ 5

Ordering the Prefixes by Magnitude

To find the logical order, we compare the values (powers of 10). Ordering from the smallest value to the largest value:

  1. Nano ($ 10^{-9} $) - This is the smallest value. Corresponds to number 3.
  2. Micro ($ 10^{-6} $) - This is the next smallest. Corresponds to number 1.
  3. Mili ($ 10^{-3} $) - This is the next value. Corresponds to number 5.
  4. Hecto ($ 10^{2} $) - This is positive power, smaller than Kilo. Corresponds to number 2.
  5. Kilo ($ 10^{3} $) - This is the largest value. Corresponds to number 4.

Determining the Correct Sequence

Based on the ordering from smallest to largest magnitude, the sequence of the original numbers is:

3 (Nano), 1 (Micro), 5 (Mili), 2 (Hecto), 4 (Kilo)

This sequence is 3, 1, 5, 2, 4.

Selecting the Correct Option

Comparing this sequence to the given options, we find that it matches the first option.

  • Option 1: 3, 1, 5, 2, 4
  • Option 2: 1, 3, 5, 2, 4
  • Option 3: 3, 1, 5, 4, 2
  • Option 4: 3, 1, 2, 5, 4

Therefore, the correct arrangement is 3, 1, 5, 2, 4.

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Similar Questions

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