List of top Chemistry Questions asked in NEET (UG)

Using anhydrous AlCl3 as catalyst, which one of the following reactions produces ethylbenzene (PhEt)

Which of the following coordination compounds would exhibit optical isomerism
You are required to draw blood from a patient and to keep it in a test tube for analysis of blood corpuscles and plasma. You are also provided with the following four types of test tubes. Which of them will you not use for the purpose?
In an octahedral structure, the pair of d orbitals involved involved in d2 sp3 hybridization is
CN– is a strong field ligand. This is due to the fact that

The radioactive isotope \(_{27}^{60}\textrm{Co}\) which is used in the treatment of cancer can be made by (n, p) reaction. For this reaction the target nucleus is

Considering entropy (S) as a thermodynamic parameter, the criterion for the spontaneity of any process is
The rate of first order reaction is $1.5 \times 10^{-2}$ mol $L^{-1} \, min^{-1}$ at 0.5 M concentration of the reactant. The half-life of the reaction is
The rapid change of $pH$ near the stoichiometric point of an acid base titration is the basis of indicator detection. $pH$ of the solution is related to ratio of the concentrations of the conjugate acid ($HIn$) and base $ (In^-) $ forms of the indicator given by the expression
The following equilibria are given : $N _{2}+3 H _{2} \rightleftharpoons 2 NH _{3}\, K _{1}$ $N2 + O2 \rightleftharpoons 2NO\, K_2$ $H_2 + \frac{1}{2} O_2 \rightleftharpoons H_2 O \, K_3$ The equilibrium constant of the reaction $2NH_3 + \frac{5}{2} O_2 \rightleftharpoons 2NO + 3H_2 O$ in terms of $K_1,\, K_2$ and $K_3$ is
The method of zone refining of metals is based on the principle of:
Which of the following pairs of compounds are enantiomers:
According to IUPAC nomenclature sodium nitroprusside is named as
Chargaff's rule states that in an organism
Glycolysis is
Phospholipids are esters of glycerol with
Vitamin $B_{12}$ contains
The value of Planck's constant is $ 6.63 \times 10^{-34} \,Js.$ The velocity of light is $3.0 \times 10^8\, ms^{-1}$. Which value is closest to the wavelength in nanometers of a quantum of light with frequency of $8 \times 10^{15}\, s^{-1}$?
The activation energy for a simple chemical reaction, $A\longrightarrow$ B is $E_{a}$ in forward direction. The activation energy for reverse reaction
Among the following which is not the $\pi$-bonded organometallic compound
Formation of a solution from two components can be considered as : (i) Pure solvent $\rightarrow$ separated solvent molecules, $\Delta H _{1}$ (ii) Pure solvent $\rightarrow$ separated solvent molecules, $\Delta H _{2}$ (iii) Separated solvent and solute molecules $\rightarrow$ solution, $\Delta H _{3}$ Solution so formed will be ideal if
If the rate of a reaction is equal to the rate constant, the order of the reaction is
In Haber process $30\,L$ of dihydrogen and $30\,L$ of dinitrogen were taken for reaction which yielded only $50\%$ of the expected product. What will be the composition of gaseous mixture under the aforesaid condition in the end?

The basic character of the transition metal monoxides follows the order: (Atomic no. - Ti = 22, V = 23, Cr = 24, Fe = 26)

The correct order of ionic radii of $Y ^{3+}, La ^{3+}$ $Eu ^{3+}$, and $Lu ^{3+}$ is : - Atomic nos. $Y =39,\, La =57,\, Eu =63,\, Lu =71$.