List of top Chemistry Questions asked in NEET (UG)

Green chemistry means such reactions which
The relative reactivities of acyl compounds towards nucleophilic substitution are in the order of
The correct order of decreasing second ionisation enthalpy of Ti(22), V(23), Cr(24) and Mn(25) is
Base strength of (i) $h_3C \, {C} ^{\ominus} H_2$ (ii) $H_2 C= {C}^{\ominus} H$ (iii) $H-C \equiv C^{\ominus} $ is in the order of
Equimolar solutions of the following were prepared in water separately. Which one of the solutions will record the highest pH ?
Number of moles of $MnO^{-}_4$ required to oxidise one mole of ferrous oxalate completely in acidic medium will be
On the basis of the following $E^0 $ values, the strongest oxidising agent is $[Fe(CN)_6]^{4-} \rightarrow [Fe(CN)_6]^{3-}+e^-; $ $\hspace15mm E^0=-0.35 V $ $Fe^{2+} \rightarrow Fe^{3+} + e^-;E^0=-0.77 V $
The angular shape of ozone molecule $ (O_3 )$ consists of
-The stability of carbanions in the following (i) $RC \equiv {C}^{\ominus}$ (iii) $R_2C = {CH}^{\ominus}$ (iv) $R_3C = {CH_2}^{\ominus}$ , is in the order of
The value of equilibrium constant of the reaction, $ HI(g) \rightleftharpoons \frac{1}{2} H_2 (g) + \frac{1}{2} I_2 (g)\, \, is\, \, 8.0 $ . The equilibrium constant of the reaction, $ H_2 (g) + I_2 (g) \rightleftharpoons 2HI(g) $ Will be
Trans esterification is the process of
The number of moles of $KMnO_4$ that will be needed to react with one mole of sulphite ion in acidic solution is
The two polynucleotide chain in $DNA$ are :
$RNA$ and $DNA$ are chiral molecules, their chirality is due to
If there is no rotation of plane polarised light by a compound in a specific solvent, though to be chiral, it may mean that
Sulphide ores of metals are usually concentrated by froth floatation process. Which one of the following sulphide ores offers an exception and is concentrated by chemical leaching?
The correct order of $C-O $ bond length among $CO,CO_3^{2-}$, $CO_2$ is
The correct order of increasing thermal stability of $K_2CO_3, MgCO_3, CaCO_3 $ and $ BeCO_3$ is
The efficiency of a fuel cell is given by
The Langmuir adsorption isotherm is deduced by using the assumption :
The product formed in Aldol condensation is
With which of the following electronic configuration of an atom has the lowest ionisation enthalpy?
Identify the correct order of the size of the following.
Consider the following compounds: (i) $C_6H_5COCl$ The correct decreasing order of their reactivity towards hydrolysis is:
For the following: (a) $I^-$ (b) $Cl^-$ (c) $Br^-$ The increasing order of nucleophilicity would be: