List of top Chemistry Questions asked in NEET (UG)

The number of Faradays(F) required to produce 20g of calcium from molten $CaCl_2$ (Atomic mass of $CaCl_2$ g $mol^{-1}$) is :

A tertiary butyl carbocation is more stable than a secondary butyl carbocation because of which of the following ?

Which of the following is cationic detergent?

A liquid compound (x) can be purified by steam distillation only if it is

Identify a molecule which does not exist.

For the chemical reaction \(N_2(g)+ 3H_2(g)= 2NH_3(g)\) the correct option is :

For the second period elements the correct increasing order of first ionisation enthalpy is :

The number of \(\sigma \)and \(\pi\) bonds in pent-2-en-4-yne is: 

The method used to remove temporary hardness of water is : (1) (2) (3) (4)

An alkene \("A"\) on reaction with \(O_3\) and \(Zn - H_2{0}\) given propanone and ethanol in equimolar ratio. Addition of \(HCI\) to alkene \("A"\) gives. \("B"\)as the major product. The structure of product \("B"\) is : 

The correct structure of tribromooctaoxide is:

Which of the following species is not stable ?

The manganate and permanganate ions are tetrahedral, due to:

The non-essential amino acid among the following is:

What is the correct electronic configuration of the central atom in \(K_4[Fe(CN)_6]\) based on crystal field theory?

Which will make basic buffer?

If the rate constant for a first order reaction is k the time (t) required for the completion of 99% of the reaction is given by:

The compound that is most difficult to protonate is:

The number of moles of hydrogen molecules required to produce 20 moles of ammonia through Haber's process is

Which of the following diatomic molecular species has only bonds according to Molecular Orbital Theory?

In which case change in entropy is negative? (1)(2) (3 (4)

For the cell reaction
\(2Fe^{3+}+2I^{-}_{(aq)}\rightarrow2Fe^{2+}+I_2{(aq)}\)
\(E^{\ominus}_{cell}=0.24\ V \ at \ 298 k.\)The standard Gibbs energy \((\Delta_rG^{\ominus})\) of the cell reaction is:
[Given that Faraday constant \( F=96500 \ C\ mol^{-1}]\)  

A gas at 350 K and 15 bar has molar volume 20 percent smaller than that for an ideal gas under the same conditions. The correct option about the gas and its compressibility factor (Z) is:

Among the following, the reaction that proceeds through an electrophilic substitution, is:

Which of the following series of transitions in the spectrum of hydrogen atom falls in visible region?