List of top Questions asked in AIIMS BSc Nursing

\([Co(H_{2}O)_{6}]^{2+}\) (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?
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 substance that contains chemically similar atoms, and the atoms always exist in pairs. What is that substance called?
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:
Which of the following groups increases the acidic strength of carboxylic acid?
What is the structure of Tetrahydrofuran (THF)?
What happens when an ideal gas undergoes isothermal expansion into vacuum?
Which is the correct pair of chelating and ambidentate ligands?
Match Column-I with Column-II: \[ \begin{array}{ll} \textbf{Column-I} & \textbf{Column-II}\\ A.\ \text{Homoleptic} & I.\ \text{Complex containing different ligands}\\ B.\ \text{Heteroleptic} & II.\ \text{Ligand having two donor atoms}\\ C.\ \text{Hexadentate} & III.\ \text{Complex containing only one type of ligand}\\ D.\ \text{Bidentate} & IV.\ \text{Ligand having six donor atoms} \end{array} \]
What type of nitrogenous base is Uracil and what is its structure?
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): \[ \begin{array}{ll} \textbf{Column-I} & \textbf{Column-II} \\ A.\ \text{Linkage isomerism} & 1.\ [Co(NH_3)_5SO_4]Br/[Co(NH_3)_5Br]SO_4 \\ B.\ \text{Ionisation isomerism} & 2.\ [Co(NH_3)_5(NO_2)]Cl_2/[Co(NH_3)_5(ONO)]Cl_2 \\ C.\ \text{Coordination isomerism} & 3.\ [Co(NH_3)_6][Cr(CN)_6]/[Cr(NH_3)_6][Co(CN)_6] \end{array} \]
An unknown element 'E' forms two compounds: \(EO_{2}\) and \(EX_{4}\). To which group does element 'E' belong?
What is the hybridisation of carbon atoms in \(CH_{2}=CH-CN\) (Acrylonitrile)?
What is the structure of Cyclohexyl methanol?
What is the oxidation state of oxygen in \(O_{2}F_{2}\) and \(O_{3}\)?
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.
Which colligative property is most suitable for determining molar mass?
Why do aryl halides not show nucleophilic substitution reaction?
Assertion (A): The first ionization enthalpy of nitrogen is higher than that of oxygen.
Reason (R): Nitrogen has a half-filled \(2p\) orbital, which is extra stable.
What will be formed when \(CH_{3}-CH=CH_{2}+HBr\) reacts in the presence of peroxide?
What is formed when benzene diazonium chloride (BDC) reacts with phenol?