The difference between volume and pressure coefficients of an ideal gas is

Consider the following statements $A$ and $B$ and identify the correct answer given below.
$A$. Peltier coefficient is numerically equal to the potential difference across the junctions of the thermocouple through which current is flowing.
$B$. According to Thomson,energy is neither absorbed nor evolved at the junction of a thermocouple but is absorbed or evolved only along the lengths of both the conductors.

The ratio of the lengths of two wires $A$ and $B$ of the same material is $1 : 2$ and the ratio of their diameters is $2 : 1$. If they are stretched by the same force,then the ratio of the increase in their lengths will be:

Which of the following radioactive isotopes is used in the detection of thyroid cancer?

The value of $x$ for the maximum value of $\sqrt{3} \cos x + \sin x$ is .....$^o$

Human urine is usually acidic because: