List of top Chemistry Questions asked in NEET (UG)

A solution containing components A and B follows Raoult's law : -

1 M and 2.5 litre NaOH solution mixed with another 0.5 M and 3 litre NaOH solution. Then find out molarity of resultant solution

Unit of entropy is

2 mole of ideal gas at 27ºC temp. is expanded reversibly from 2 lit. to 20 lit. Find entropy change (R = 2 cal/mol K)

In $NO_3^-$ ion number of bond pair and lone pair of electrons on nitrogen atom are :-

Which of the following is iso-electronic :-

Which of the following has p$_\pi$ – d$_\pi$ bonding

In hydrogen atom, energy of first excited state is -3.4 eV. Then, KE of same orbit of hydrogen atom :-

In Hydrozen atom, energy of first excited state is – 3.4 eV. Then find out KE of same orbit of Hydrogen atom

A solution contains non volatile solute of molecular mass M₂. Which of the following can be used to calculate the molecular mass of solute in terms of osmotic pressure

Coordination number of Ni in [(C₂O₄)₃]^-4 is

PbO₂ $\rightarrow$ PbO ∆G₂₉₈< 0,

SnO₂ $\rightarrow$ SnO ∆G₂₉₈ > 0,
Most probable oxidation state of Pb & Sn will be

Which statement is incorrect

Zn convert it's melted state to its solid state, it has HCP structure, then find out nearest no. of nearest atom

In BCC, the distance between two nearest atoms will be

In HS^-,I^-,R–NH₂, NH₃ order of proton excepting tendency will be :-

Enthalpy of CH₄+$\frac{1}{2}$O₂$\rightarrow$CH₃OH is negative. If enthalpy of combustion of CH₄ and CH₃OH are x and y respectively. Then which relation is correct : -

CH₃-CH₂-CH-CH₃obtained by chlorination of n-butane will be
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CI

Which of following organometallic compound is $\sigma$ and $\pi$ bonded

Which alkene on ozonolysis gives CH₃CH₂CHO and

In X- H ----- Y, X and Y both are electronegative elements

Which rays contain (+ Ve) charged particle

Mn and Mp represet the mass of neutron and proton respectively. An element having mass M has N neutron and Z-protons, then the correct relation will be

Standard electrode potentials for Fe electrode are given as $Fe^{2+}+2e^{-} \rightarrow Fe ; E^{o}=-0.44 V$ $Fe^{3+}+e^{-} \rightarrow Fe^{2+}; E^{o}=+0.77 V$ $ Fe^{2+}, Fe^{3+}$ and Fe blocks are kept together then

Change in enthalpy for reaction 2H2O2(l) → 2H2O(l) + O2(g) If heat of formation of H2O2(l) and H2O(l) are – 188 & – 286 KJ/mol respectively : -