Question

In which of the following pairs of temperature scales, the size of a degree is identical?
$\left(i\right)$ mercury scale and ideal gas scale
$\left(ii\right)$ Celsius scale and mercury scale
$\left(iii\right)$Celsius scale and ideal gas scale
$\left(iv\right)$ ideal gas scale and absolute scale

• A. $\left(iii\right),\left(iv\right)$
• B. $\left(ii\right),\left(iii\right)$
• C. $\left(i\right),\left(iv\right)$
• D. $\left(i\right),\left(iii\right)$

Answer 1

The correct option is A $\left(iii\right),\left(iv\right)$

On ideal gas scale, temperature has been defined as proportional to the product of $PV$ for a fixed mass of gas
Absolute scale is Kelvin scale only Change in $1^{\circ }C$ corresponds to change of $1K$
Temperature scales having same size of degree are

$\left(iii\right)$ 𝐶elsius and ideal gas scale, and

$\left(iv\right)$ Ideal gas and absolute scale.
Final answer (c)