List of top Chemistry Questions asked in NEET (UG)

Which of the following statements about enzymes are true?
The electronic configuration of an element is $1s^2,2s^2 2p^6,3s^2 3p^3$. What is the atomic number of the element, which is present just below the above element in the periodic table?
The figure indicates the energy level diagram of an atom and the origin of six spectral lines in emission (e.g. line no. 5 arises from the transition from level B to A). Which of the following spectral lines will occur in the absorption spectrum?
In which of the following reactions, there is no change in valency ?
Brown ring test is used to detect
A certain compound X when treated with copper sulphate solution yields a brown precipitate. On adding hypo solution, the precipitate turns white. The compoundXis
Lassaigne's test for the detection of nitrogen fails in
The weakest among the following types of bond is

The O-O-H bond angle in \(H_2O_2\) is

Schotten-Baumann reaction is a reaction of phenols with
The temperature of the gas is raised from $27^\circ C\, to\, 927^\circ C$ the root mean square velocity is
The distance between two adjacent carbon atoms is largest in
50 mL of hydrogen diffuses out through a small hole of a vessel, in 20 minutes. The time taken by 40 mL of oxygen to diffuse out is
Phosphorus has the oxidation state of + 3 in
The common oxidation states of Ti are
Peptide bond is a key feature in
The boiling point of p-nitrophenol is higher than that of o-nitrophenol because
Correct the increasing order of acidity is as
The process of separation of a racemic modification into d and l-enantiomers is called
Sounds above what level are considered hazardous noise pollution?
Among the following, the one which is most basic is
1.1 mol of A is mixed with 2.2 mol of B and the mixture is kept in one litre flask till the equilibrium is reached. At equilibrium, 0.2 mol of C is formed. If the equilibrium reaction is $A + 2B \rightarrow 2C + D,$ the value of equilibrium constant is

Which among the following is paramagnetic?

Which of the following is never true for cathode rays?
Which one of the following salt will have the same value of vant Hoff's factor (i) as that of $K_4[Fe(CN)_6]$ ?