We are given some diseases in Column II. Column-I contains name of some vitamins and their deficiencies will cause:
Column-I | Column-II | ||
| (A) | Vitamin A | (p) | Scurvy |
| (B) | Vitamin B2 | (q) | Xerophthalmia |
| (C) | Vitamin B1 (Thiamine) | (r) | Cheilosis |
| (D) | Vitamin C | (s) | Beri Beri |
A(q); B(r); C(s); D(p)
A(r); B(q); C(p); D(s)
A(q); B(r); C(p); D(s)
A(p); B(r); C(s); D(q)
The correct answer is option (A) : A(q); B(r); C(s); D(p)

MX is a sparingly soluble salt that follows the given solubility equilibrium at 298 K.
MX(s) $\rightleftharpoons M^{+(aq) }+ X^{-}(aq)$; $K_{sp} = 10^{-10}$
If the standard reduction potential for $M^{+}(aq) + e^{-} \rightarrow M(s)$ is $(E^{\circ}_{M^{+}/M}) = 0.79$ V, then the value of the standard reduction potential for the metal/metal insoluble salt electrode $E^{\circ}_{X^{-}/MX(s)/M}$ is ____________ mV. (nearest integer)
[Given : $\frac{2.303 RT}{F} = 0.059$ V]
An infinitely long straight wire carrying current $I$ is bent in a planar shape as shown in the diagram. The radius of the circular part is $r$. The magnetic field at the centre $O$ of the circular loop is :

Biomolecules are the most essential organic molecules, which are involved in the maintenance and metabolic processes of living organisms. These non-living molecules are the actual foot-soldiers of the battle of sustenance of life.
There are four major classes of Biomolecules – Carbohydrates, Proteins, Nucleic acids and Lipids.