List of top Chemistry Questions asked in NEET (UG)

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

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

PbO₂ $\rightarrow$ PbO ∆G₂₉₈< 0,

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

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

Which statement is incorrect

In BCC, the distance between two nearest atoms will be

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

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

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

Which alkene on ozonolysis gives CH₃CH₂CHO and

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 : -

When 1 mol gas is heated at constant volume temp. is raised from 298 to 308 K. Heat supplied to the gas is 500 J. Then which statement is correct : -

A human body required the 0.01 Curie activity of radioactive susbtance after 24 hours. Half life of radioactive is 6 hours. Then max. activity of radioactive sustance that can be injected will be

When a bio chemical reaction is carried out in laboratory out side the human body in the absence of enzyme, then the rate of reaction obtained is $10^–6$ times, than activation energy of reaction in the presence of enzyme is

Solubility of a $M_2S$ salt is $3.5 \times 10^{–6}$ , then find out solubility product.

When a biochemical reaction is carried out in laboratory from outside of human body in the absence of enzyme, the rate of reaction obtained is $10^{-6}$ times, then activation energy of the reaction in the presence of enzyme is