Match List I with List II:
| LIST I (Type) | LIST II (Name) |
| (P) Antifertility drugs | (A) Norethindrone |
| (Q) Antihistamines | (B) Seldane |
| (R) Tranquilizers | (C) Meprobamate |
| (S) Antibiotics | (D) Penicillin |
Choose the correct answer from the options given below:
Match drug types with their functions:
• Antifertility drug: Contraceptive hormones.
• Tranquilizer: Reduces anxiety.
• Antihistamine: Treats allergies.
• Antibiotic: Treats bacterial infections.
P → (A), Q → (B), R → (C), S → (D)
P → (A), Q → (C), R → (B), S → (D)
P → (D), Q → (C), R → (B), S → (A)
P → (A), Q → (D), R → (B), S → (C)
The correct matches are:
• Antifertility drug: Norethindrone is a synthetic hormone used in contraceptive pills.
• Tranquilizer: Meprobamate is used as a sedative or tranquilizer.
• Antihistamine: Seldane is an antihistamine used to treat allergies.
• Antibiotic: Ampicillin is a broad-spectrum antibiotic used to treat bacterial infections.
Thus, the correct matching is:
A-I, B-II, C-III, D-IV.
What will be the equilibrium constant of the given reaction carried out in a \(5 \,L\) vessel and having equilibrium amounts of \(A_2\) and \(A\) as \(0.5\) mole and \(2 \times 10^{-6}\) mole respectively?
The reaction : \(A_2 \rightleftharpoons 2A\)

Cobalt chloride when dissolved in water forms pink colored complex $X$ which has octahedral geometry. This solution on treating with cone $HCl$ forms deep blue complex, $\underline{Y}$ which has a $\underline{Z}$ geometry $X, Y$ and $Z$, respectively, are
Given below are two statements:
Statement I: D-(+)-glucose + D-(+)-fructose $\xrightarrow{H_2O}$ sucrose sucrose $\xrightarrow{\text{Hydrolysis}}$ D-(+)-glucose + D-(+)-fructose
Statement II: Invert sugar is formed during sucrose hydrolysis.
In the light of the above statements, choose the correct answer from the options given below -
$Nd ^{2+}=$ ___________
Match items of column I and II
| Column I (Mixture of compounds) | Column II (Separation Technique) | ||
| A | H2O/CH2Cl2 | i | Crystallization |
| B | ![]() | ii | Differential solvent extraction |
| C | Kerosene/Naphthalene | iii | Column chromatography |
| D | C6H12O6/NaCl | iv | Fractional Distillation |
What will be the equilibrium constant of the given reaction carried out in a \(5 \,L\) vessel and having equilibrium amounts of \(A_2\) and \(A\) as \(0.5\) mole and \(2 \times 10^{-6}\) mole respectively?
The reaction : \(A_2 \rightleftharpoons 2A\)
The scientific study of matter’s properties and behaviour is known as chemistry. It is a natural science that studies the elements that makeup matter, as well as the compounds, made up of atoms, molecules, and ions: their composition, structure, qualities, and behaviour, as well as the changes that occur when they mix with other things.