Question

Which of the following relationships are wrong?

• A. $1atm\approx 0.1bar$
• B. $1J=0.239cal$
• C. $1eV=9.11\times {10}^{-4}J$
• D. $1liter=1d{m}^3$

Answer 1

Answer: (A), (C)

The correct options are
A $1atm\approx 0.1bar$
D $1eV=9.11\times {10}^{-4}J$
$1atm=1.01325bar\approx 1bar\ne 0.1bar$

$1litre={10}^{-3}{m}^3=1{dm}^3$

$1cal=4.18J\Rightarrow 1J=0.239cal1ev=1.6\times {10}^{-19}J\ne 9.11\times {10}^{-4}J$

Therefore, $\left(A\right).\left(D\right)$ are the correct answer.