List of top Chemistry Questions asked in NEET (UG)

A first order reaction has a specific reaction rate of $10^{-2} \, sec^{-1}$. How much time will it take for $20\, g$ of the reactant to reduce to $5\, g$ ?

Which of the following is dependent on temperature?

The correct increasing order of basic strength for the following compounds is :

The number of geometrical isomers of $CH_{3} CH=CH-CH=CH-CH=CHCl$ is

Correct increasing order for the wavelengths of absorption in the visible region the complexes of $Co^{3+}$ is :

A gas is allowed to expand in a well insulated container against a constant external pressure of $2.5\, atm$ from an initial volume of $2.50\, L$ to a final volume of $4.50\, L$. The change in internal energy $\Delta U$ of the gas in joules will be

Mixture of chloroxylenol and terpineol acts as

Name the gas that can readily decolourise acidified $KMnO_4$ solution :

The species, having bond angles of $120^{\circ}$ is :-

The process of separation and purification of expressed protein before marketing is called :

Extraction of gold and silver involes leaching with $CN^-$ ion. Silver is later recovered by :-

The IUPAC name of the compound

The correct statement regarding electrophile is :

The element $Z = 114$ has been discovered recently. It will belong to which of the following family/group and electronic configuration ?

Mechanism of a hypothetical reaction $X _{2}+ Y _{2} \rightarrow 2 XY$ is given below: (i) $X_{2} \rightarrow X+X$ (fast) (ii) $X + Y _{2} \rightleftharpoons XY + Y$ ( slow ) (iii) $X + Y \rightarrow XY$ (fast) The overall order of the reaction will be

Predict the correct intermediate and product in the following reaction :
$H_{3}C-C\equiv CH\underset{HgS{O}_4}{\overset{H_{2}O,H_{2}S{O}_4}{\to }}\underset{\text{(A)}}{\mathrm{Intermediate}}\to \underset{\text{(B)}}{\mathrm{product}}$

The e.m.f. of a Daniell cell at $298\, K$ is $E _{1}$. $Zn / SO _{4}(0.01 M ) \| CuSO _{4}(1.0 M ) / Cu$ When the concentration of $ZnSO _{4}$ is $1.0\, M$ and that of $CuSO _{4}$ is $0.01\, M$, the e.m.f. is changed to $E _{2}$. What is the relationship between $E _{1}$ and $E _{2}$ :

Concentration of the Ag⁺ ions in a saturated solution of Ag₂C₂O₄ is 2.2 × 10^–4 mol L^–1. Solubility product of Ag₂C₂O₄ is

Which is the incorrect statement?

HgCl₂ and I₂ both when dissolved in water containing I^– ions the pair of species formed is

Mixture of chloroxylenol and terpineol acts as

With respect to the conformers of ethane, which of the following statements is true?

Which of the following pairs of compounds is isoelectronic and isostructural ?

$A\, 20$ litre container at $400\, K$ contains $CO _{2}( g )$ at pressure $0.4\, atm$ and an excess of SrO (neglect the volume of solid SrO). The volume of the containers is now decreased by moving the movable piston fitted in the container. The maximum volume of the container, when pressure of $CO _{2}$ attains its maximum value, will be (Given that $: SrCO _{3}( s ) \rightleftharpoons SrO ( s )+ CO _{2}( g )$ $\left. K _{ p }=1.6\, atm \right)$

Ionic mobility of which of the following alkali metal ions is lowest when aqueous solution of their salts are put under an electric field ?