It secretes the Oxalic acid, which effectively dissolves minerals, particularly the carbonate contained in the marble.

Which of the following organism is described in the above sentence?

Q. is particularly vulnerable to carbonation.
The above statement best describes which of the following regions?

Q. $10$ mL of a blood sample (containing calcium oxalate) is dissolved in acid. It required $20$ mL of $0.001MKMn{O}_4$ (which oxidises oxalate to carbon dioxide). Hence, $C{a}^{2+}$ ion in $10$ mL blood is :

Q. Liver is a vital organ in most organisms, particularly all vertebrates. Identify the correct combination of statements which are true about liver.
I. It secretes a hormone for controlling sugar level in the blood.
II. It converts excess glucose into glycogen and vice versa.
III. It secretes digestive enzymes.
IV. It plays a major role in the breakdown of hemoglobin.

Q. If $1.26g$ of oxalic acid is dissolved in $250mL$ of solution, find its normality. The equivalent mass of oxalic acid is $63$.

Q. It is the process in which minerals in the rocks dissolve in water.