List of top Chemistry Questions asked in NEET (UG)

Which of the following is an amphoteric hydroxide?

The manganate and permanganate ions are tetrahedral, due to:

Under isothermal condition, a gas at 300 K expands from 0.1 L. to 0.25 L against a constant external pressure of 2 bar. The work done by the gas is: [Given that 1 L bar=100J]

Conjugate base for Brönsted acids \(H_2O\) and \( HF\) are

Which is the correct thermal stability order for\( H_2E\) (E=O, S, Se, Te and Po)? 

Match the Xenon compounds in Column-I with its structure in Column II and assign the correct code:

Column I		Column II
A	\(XeF_4\)	I	pyramidall
B	\(XeFe_6 \)	II	square planar
C	\(XeOF_4  \)	III	distorted octahedral
D	\(XeO_3\)	IV	square pyramidal

Code:

Which will make basic buffer?

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

Enzymes that utilize ATP in phosphate transfer require an alkaline earth metal (M) as the cofactor. M is:

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

4d, 5p, 5f and 6p orbitals are arranged in the order of decreasing energy. The correct option is:

Which of the following reactions are disproportionation reaction?
a)\(2Cu^{+}\rightarrow Cu^{2+}+Cu^{0}\)
\(b)3MnO_4^{2-}+4H^{+} \rightarrow2MnO_4^{-}+MnO_2+2H_2O\)
\(c)2KMnO_4\frac{\Delta}{\rightarrow}K_2MnO_4+MnO_2+O_2\)
\(d)2MnO_4^{-}+3Mn^{2+}+2H_2O \rightarrow 5MnO_2+4H^\oplus\)
Select the correct option from the following:

Among the following, the one that is not a green house gas is

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:

For an ideal solution, the correct option is:

For a cell involving one electron \(E^\ominus cell=0.59V\) at 298 K, the equilibrium constant for the cell reaction is: [Given that \(\frac{ 2.303 RT }{F}\) \(=0.059 V\) at\( T 298 K \)] 

Match LIST I with LIST II

LIST I		LIST II
A	Pure nitrogen	I	Chlorine
B	Haber process	II	Sulphuric acid
C	Contact process	III	Ammonia
D	Deacon's process	IV	Sodium azide or Barium azide

Which of the following is the correct option?

The most suitable reagent for the following conversion, is:

The structure of intermediate A in the following reaction, is;

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

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

Which mixture of the solutions will lead to the formation of negatively charged colloidal [Agl]I- Sol.? (

Which of the following is incorrect statement?

The major product of the following reaction is:

4d, 5p, 5f and 6p orbitals are arranged in the order of decreasing energy. The correct option is :