List of top Chemistry Questions asked in NEET (UG)

Copper sulphate dissolves in excess of KCN to give

Identify the correct statement for change of Gibbs energy for a system ($\Delta G_{system}$) at constant temperature and pressure :

The orientation of an atomic orbital is governed by

Ethylene oxide when treated with Grignard reagent yields :

Which of the following is not chiral:-

A solution containing $10\,g$ per $dm^{ 3}$ of urea (molecular mass = $60\,g\, mol^{-1})$ is isotonic with a $5\%$ solution of a non-volatile solute. The molecular mass of this non-volatile solute is :

A solution of acetone in ethanol

During the process of digestion, the proteins present in food materials are hydrolysed to amino acids. The two enzymes involved in the process $ { Proteins ->[{\text{Enzyme(A)}}] Polypeptides }$ $ { ->[{\text{Enzyme(B)}}] Amino acids,}$ are respectively

Which one of the following is a peptide hormone:-

The human body does not produce

Which of the following is more basic than aniline ?

$CsBr$ crystallises in a body centred cubic lattice. The unit cell length is $436.6\, pm$. Given that the atomic mass of $Cs = 133\, u$ and that of $Br \,= \,80\, u$ and Avogadro number being $6.023 \times 10^{23} mol^{-1}$, the density of $CsBr$ is :

$[Co(NH)_3)_4(NO_2)_2]Cl$ exhibits :-

$ Al_2O_3$ can be converted into anhydrous $AlCl_3$ by heating

The hydrogen ion concentration of a $ 10^{-8}M HCl $ aqueous solution at 298 K $ ( K_w = 10^{-14} ) $ is :-

The appearance of colour in solid alkali metal halides is generally due to :

The enthalpy and entropy change for the reaction : $ {Br2(\ell) + Cl2(g) -> 2BrCl(g)}$ are $30 \,kJmol^{-1}$ and $105\,JK^{-1} mol^{-1}$ respectively. The temperature at which the reaction will be in equilibrium is :

Which of the following species has a linear shape?

Given, the mass of electron is $9.11 \times 10^{-31}\, kg$, Planck's constant is $6.626 \times 10^{-34}\, Js$, the uncertainty involved in the measurement of velocity within a distance of $0.1 \mathring{A}$ is

The IUPAC name of   is :

Which of the following is the most basic oxide ?

Which of the following is not a correct statement ?

The number of unpaired electrons in a paramagnetic diatomic molecule of an element with atomic number 16 is :

Which of the following is not isostructural with \(\text{SiCl}_4\) ?

A solution has a 1:4 mole ratio of pentane to hexane. The vapour pressure of the pure hydrocarbons at 20°C are 440 mm of Hg for pentane and 120 mm of Hg for hexane. The mole fraction of pentane in the vapour phase would be