List of top Chemistry Questions asked in NEET (UG)

The right option for the mass of CO₂ produced by heating 20g of 20% pure limestone is
(Atomic mass of Ca= 40)

	List-I (Oxoacids of Sulphur)		List-II (Bonds)
A	Peroxodisulphuric acid	I	Two S–OH, Four S=O, One S–O–S
B	Sulphuric acid	II	Two S–OH, One S=O
C	Pyrosulphuric acid	III	Two S–OH, Four S=O, One S–O–O–S
D	Sulphurous acid	IV	Two S–OH, Two S=O

Choose the correct answer from the options given below.

Taking stability as the factor, which one of the following represents correct relationship?

Given below are two statements:

Statement I: A unit formed by the attachment of a base to 1' position of sugar is known as nucleoside.

Statement II: When nucleoside is linked to phosphorous acid at 5 -position of sugar moiety, we get neucleotide.

In the light of the above statements, choose the correct answer from the options given below:

Given below are two statements labeled Assertion A and the labeled as Reason R :
Assertion A: In the equation \(\Delta_rG=-nFE_{cell}\) value of \(\Delta_rG\) depends on n.
Reasons R: \(E_{cell}\) is an intensive property and \(\Delta_rG\) is an extensive property.
In the light of the above statements, choose the correct answer from the options below :

The number of σ bonds, π bonds and having pair of electrons in pyridine respectively.

The element expected to form largest in achieve the nearest noble gas configuration.

Consider the following reaction:

Identify the product A and B.

Homoleptic complex from the following complexes is:

The relation between n_m (n_m = the number of permissible values of magnetic quantum number (m)) for a given value of azimuthal quantum number (l), is

which of the following statements are incorrect?
A. All the transition metals except scandium form MO oxides which are iconic
B. The highest oxidation number corresponding to the group number in transition metal oxides is attained in Sc₂O₃ to Mn₂O₇
C. Basic character increases from V₂O₃ to V₂O₄ to V₂O₅
D. V₂O₄ dissolves in acids to give VO salts
E. CrO is basic but Cr₂O₃ is amphoteric
Choose the correct answer from the options given below:

Identify product (A) in the following reaction:

Amongst the given options which of the following molecules/ion acts as a Lewis acid?

The reaction that does NOT take place in a blast furnace between 900 K to 1500 K temperature range during extraction of iron is?

Identify the final product [D] obtained in the following sequence of reactions.

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R:
Assertion A: A reaction can have zero activation energy.
Reasons R: The minimum extra amount of energy absorbed by reactant molecules so that their energy becomes equal to threshold value, is called activation energy.
In the light of the above statements, choose the correct answer from the options given below:

Weight (g) of two moles of the organic compound, which is obtained by heating sodium ethanoate with sodium hydroxide in the presence of calcium oxide is :

For a certain reaction, the rate=\(k[A]^2[B]\) when the initial concentration of A is tripled keeping concentration of B constant, the initial rate would

The given compound

is an example of ___________.

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

Intermolecular forces are forces of attraction and repulsion between interacting paiticles that will include :

A. dipole - dipole forces.

B. dipole - induced dipole forces.

C. hydrogen bonding.

D. covalent bonding.

E. dispersion forces.

Choose the most appropriate answer from the options given below :

The conductivity of centimolar solution of KCI at 25°C is 0.0210 ohm^-1cm^-1 and the resistance of the cell containing the solution at 25°C is 60 ohm. The value of the cell constant is :

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

Which of the following statements are NOT correct?
A. Hydrogen is used to reduce heavy metal oxides to metals.
B. Heavy water is used to study reaction mechanism.
C. Hydrogen is used to make saturated fats from oils.
D. The H-H bond dissociation enthalpy is lowest as compared to a single bond between two atoms of any element.
E. Hydrogen reduces oxides of metals that are more active than iron.
Choose the most appropriate answer from the options given below :

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 :

List of top Chemistry Questions asked in NEET (UG)

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