In the final answer of the expression (29.2 – 20.2) (1.79 x 10⁵) / 1.37. The number

⇦

⇨

In the final answer of the expression (29.2 – 20.2) (1.79 x 10⁵) / 1.37. The number of significant figures is

Options

(a) 1
(b) 2
(c) 3
(d) 4

Correct Answer:

3

Explanation:

$(29-20.2)$
It consists of two numbers, $29\to$ has two significant figures and  $20.2\to$ has three significant figures.  The final result of this expression should have Two Significant Figures

$\mathrm{1.79\; x}{\mathrm{10⁵}}^{}$

In scientific notation, the number of significant figures is taken from the non-exponent part of the number. 1.79 has three significant figures.

The Least of all is 2. So, the final result must be stated in scientific notation with two significant figures.

Related Questions:

1. Benzenediazonium chloride on treated with water gives
2. Aromatic hydrocarbon shows mostly
3. At 400K sodium phenoxide reacts with CO₂ to produce
4. Which one of the following is a chain growth polymer
5. The values of heat of formation of SO₂ and SO₃ are -298.2 kJ and -98.2 kJ.

Question Type: Memory (964)
Difficulty Level: Easy (1008)
Topics: Basic Concepts of Chemistry (94)
Subject: Chemistry (2512)

---

Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score

18000+ students are using NEETLab to improve their score. What about you?

Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.

---

Share this page with your friends