List of top Chemistry Questions asked in NEET (UG)

A device that converts energy of combustion of fuels like hydrogen and methane, directly into electrical energy is known as

Cobalt (III) chloride forms several octahedral complexes with ammonia. Which of the following will not give test for chloride ions with silver nitrate at $25^{\circ } C$?

The hybridization involved in complex $ {[Ni(CN)4]^{2-}}$ is (At.No. Ni = 28)

The sum of coordination number and oxidation number of the metal M in the complex \([M(en)_2(C_2O_4)]Cl\) (where en is ethylenediamine) is :-

Nitrogen dioxide and sulphur have some properties in common. Which property is shown by one of these compounds, but not by the other?

The rate constant of the reaction $ A \to B$ is $0.6 \times 10^{-3}$ mole per second. If the concentration of A is 5 M, then concentration of $B$ after 20 minutes is :

If the equilibrium constant for ${ N2(g) + O2(g) <=> 2NO(g)}$ is K, the equilibrium constant for ${ \frac{1}{2} N_2 (g) + \frac{1}{2} O_2 (g) <=> NO(g) }$ will be :

What is the pH of the resulting solution when equal volumes of $0.1\, M \,NaOH$ and $0.01\, M$ $HCl$ are mixed ?

Which one of the following electrolytes has the same value of van't Hoff's factor (i) as that of $ {Al_2(SO_4)_3}$ (if all are 100% ionised) ?

1.0 g of magnesium is burnt with 0.56 g O₂ in a closed vessel. Which reactant is left in excess and how much ?
(At. wt. Mg =24; O=16)

When 22.4 litres of H₂(g) is mixed with 11.2 litres of Cl₂ (g), each at S.T.P., the moles of HCl (g) formed is equal to :

Equal masses of H₂, O₂ and methane have been taken in a container of volume V at temperature 27°C in identical conditions. The ratio of the volumes of gases H₂ : O₂ : methane would be :

Acidity of diprotic acids in aqueous solutions increases in the order:

(a) \(H_2O_2 + O_3 → H_2O + 2O_2\)
(b) \(H_2O_2 + Ag_2O → 2Ag + H_2O + O_2\)
Role of hydrogen peroxide in the above reactions is respectively:

Which of the following molecules has the maximum dipole moment?

Which one of the following species has plane triangular shape?

Which one of the following is an example of a thermosetting polymer?

Reason of lanthanoid contraction is:

What products are formed when the following compound is treated with Br₂ in the presence of FeBr₃?

For the reversible reaction :
\(N_2(g) + 3H_2(g) ⇋ 2NH_3(g) + \text {Heat}\)
The equilibrium shifts in forward direction :

Which property of colloids isnot dependent on the charge on colloidal particles?

For a given exothermic reaction, K_p and K'_P are the equilibrium constants at temperatures T₁ and T₂, respectively. Assuming that heat of reaction is constant in temperature range between T₁ and T₂, it is readily observed that:

Which of the following statements is correct for the spontaneous adsorption of a gas?

\(Be^{2+}\) is isoelectronic with which of the following ions?

Which of the following organic compounds has same hybridization as its combustion product CO2 ?