List of top Chemistry Questions asked in AIIMS BSc Nursing

Which transition element of the 3d series does not show variable oxidation state?
A substance that contains chemically similar atoms, and the atoms always exist in pairs. What is that substance called?
In the presence of Grignard reagent (RMgX), which of the following is used to prepare a carboxylic acid?
A nucleoside differs from a nucleotide because it lacks:
A molecule has two bonds of equal length, but its Lewis structure shows one single bond and one double bond. This is best explained by:
\([Co(H_{2}O)_{6}]^{2+}\) (Pink) \(+4Cl^{-}\rightleftharpoons[CoCl_{4}]^{2-}\) (Blue) \(+6H_{2}O\) (Endothermic reaction). If the mixture is transferred from room temperature to a freezing ice bath, what is expected to happen?
A cell has a standard electrode potential of \(0.354\,V\) at \(298\,K\). If 2 electrons are transferred in the cell reaction, what is the equilibrium constant (\(K\)) of the reaction at \(298\,K\)?
What is the structure of Tetrahydrofuran (THF)?
Match Column-I with Column-II: \[ \begin{array}{ll} \textbf{Column-I} & \textbf{Column-II}\\ A.\ \text{Homoleptic} & I.\ \text{Complex containing different ligands}\\ B.\ \text{Heteroleptic} & II.\ \text{Ligand having two donor atoms}\\ C.\ \text{Hexadentate} & III.\ \text{Complex containing only one type of ligand}\\ D.\ \text{Bidentate} & IV.\ \text{Ligand having six donor atoms} \end{array} \]
Which of the following groups increases the acidic strength of carboxylic acid?
What happens when an ideal gas undergoes isothermal expansion into vacuum?
Which is the correct pair of chelating and ambidentate ligands?
What type of nitrogenous base is Uracil and what is its structure?
An unknown element 'E' forms two compounds: \(EO_{2}\) and \(EX_{4}\). To which group does element 'E' belong?
What is formed on aromatisation of heptane?
Hinsberg reaction is used to test which compound and what is the reagent?
What is present in a racemic mixture?
Match Column-I (Type of isomerism) with Column-II (Examples): \[ \begin{array}{ll} \textbf{Column-I} & \textbf{Column-II} \\ A.\ \text{Linkage isomerism} & 1.\ [Co(NH_3)_5SO_4]Br/[Co(NH_3)_5Br]SO_4 \\ B.\ \text{Ionisation isomerism} & 2.\ [Co(NH_3)_5(NO_2)]Cl_2/[Co(NH_3)_5(ONO)]Cl_2 \\ C.\ \text{Coordination isomerism} & 3.\ [Co(NH_3)_6][Cr(CN)_6]/[Cr(NH_3)_6][Co(CN)_6] \end{array} \]
What is the structure of Cyclohexyl methanol?
Which colligative property is most suitable for determining molar mass?
Why do aryl halides not show nucleophilic substitution reaction?
What is the hybridisation of carbon atoms in \(CH_{2}=CH-CN\) (Acrylonitrile)?
Match the Column-I (Ligands) with Column-II (Ligand type):
Column-I: (I) \(NO_{2}^{-}\), (II) \(OH^{-}\), (III) \(C_{2}O_{4}^{2-}\), (IV) EDTA.
Column-II: (A) Hexadentate, (B) Bidentate, (C) Monodentate, (D) Ambidentate.
What is the oxidation state of oxygen in \(O_{2}F_{2}\) and \(O_{3}\)?
\(R-CONH_{2}+Br_{2}+4NaOH \rightarrow R-NH_{2}+Na_{2}CO_{3}+2NaBr+2H_{2}O\); this reaction is: