List of top Chemistry Questions asked in NEET (UG)

Which amongst the following options is the correct relation between change in enthalpy and change in internal energy

In Lassaigne’s extract of an organic compound, both nitrogen and sulphur are present, which gives blood red colour with Fe³⁺ due to the formation of

Select the correct statements from the following :

A. Atoms of all elements are composed of two fundamental particles.
B. The mass of the electron is 9.10939 x 10^-31 kg.
C. All the isotopes of a given element same chemical properties.
D. Protons and electrons are collected known as nucleons.
E. Dalton’s atomic theory, regarded atom as an ultimate particle of matter.
Choose the correct answer from the options given below :

Consider the following reaction and identify the product (P).

Gadolinium has a low value of third ionisation enthalpy because of

What fraction of one edge centred octahedral void lies in one unit cell of fcc?

Identify the product in the following reaction:

The stability of \(Cu^{2+}\) is more than \(Cu^+\) salts in aqueous solution due to

Which one of the following statements is correct?

The correct order of energies of molecular orbitals of N2 molecule, is

Which amongst the following molecules on polymerization produces neoprene?

Some tranquilizers are listed below. Which one from the following belong barbiturates?

Which among the following option is the correct graphical representation of Boyle's Law?

Consider the following compounds/species:
i)

ii)

iii)

iv)

v)

vi)

vii)

The number of compounds/species which obey Huckel's rule is _____

Which amongst the following be most readily dehydrated under acidic conditions?

Identify the major product obtained in the following reaction:

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R:
Assertion A: Metallic sodium dissolved in liquid ammonia giving a deep blue solution which is paramagnetic.
Reasons R: The deep blue solution to the formation of amide.
In the light of the above statements, the correct answer from the options below:

Amongst the following, the total number of species NOT having eight electrons around central atom in its outer most shell, is NH₃, AICI₃, BeCl₂, CCl₄, PCI₅ :

Which one is an example of heterogenous catalysis?

Which of the following reactions will NOT give primary amine as the product

Complete the following reactions:

Which complex compound is most stable?

Given below are two statements:
Statement I: The nutrient deficient water bodies lead to eutrophication.
Statement II: Eutrophication leads to decrease in the level of oxygen in the water bodies.
In the ligth of the above statements , choose the correct answer from the options given below:

Pumice stone is an example of -

Amongst the following which one will have maximum 'lone pair- lone pair' electron repulsions?