Injury to the adrenal cortex is not likely to affect the secretion of which one of the following?

If the system of linear equations $x + 2ay + az = 0$,$x + 3by + bz = 0$,and $x + 4cy + cz = 0$ has a non-zero solution,then $a, b, c$:

Acid hydrolysis of $X$ yields two different organic compounds. Which one of the following is $X$?

What is the period of small oscillations of the block of mass $m$ if the springs are ideal and pulleys are massless?

Work done to increase the temperature of one mole of an ideal gas by $30^{\circ} C$,if it is expanding under the condition $V \propto T^{2/3}$ is,$(R = 8.314 \ J/mol \cdot K)$ (in $J$)

The major product of the following reaction is