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Chemistry · Some Basic Concepts of Chemistry

हिन्दी

How many significant figures are present in the number \( 0.0025 \)?

  1. A
    1
  2. B
    4
  3. C
    3
  4. D
    2
View Answer & Solution

Correct answer · Option D

2

Explanation

Zeros preceding the first non-zero digit are not significant. Thus, only digits 2 and 5 are significant, giving 2 significant figures.

Related questions

Consider the following statements regarding the classification of matter: (A) Air is a homogeneous mixture. (B) Glucose contains carbon, hydrogen, and oxygen in a fixed ratio and is classified as a pure substance. (C) The components of a homogeneous mixture are visible distinctly with the unaided eye. (D) Pure substances can have variable composition depending on their preparation method. How many of the above statements are correct?→What defines a limiting reagent in a chemical reaction?→According to the convention for rounding off numbers, if the rightmost digit to be removed is \( 5 \), followed by no other digits, which of the following pairs are correctly rounded off to two significant figures?→Which of the following physical quantities is an SI base quantity, along with its correct standard SI unit symbol?→
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