SATHEE: Some Basic Concepts Of Chemistry Question 144

Some Basic Concepts Of Chemistry Question 144

Question: How many years it would take to spend Avogadro’s number of rupees at the rate of 1 million rupees in one second?

Options:

A) $19.098 \times 10^{19}$ years

B) $19.098$ years

C) $19.098 \times 10^{9}$ years

D) None of these

Show Answer

Answer:

Correct Answer: C

Solution:

[c] $∵$ $10^{6}$ rupees are spent in 1 sec.

$∴$ $6.023 \times 10^{23}$ rupees are spent in $\frac{1 \times 6.023 \times 10^{23}}{10^{6}}$

$\sec = \frac{1 \times 6.023 \times 10^{23}}{10^{6} \times 60 \times 60 \times 24 \times 365}$ years $= 19.098 \times 10^{9}$ years

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