List of top Chemistry Questions asked in NEET (UG)

The concentration units independent of temperature would be
The correct order of the $O - O$ bond length in $O_2,H_2 O_2 $ and $O_3 $ is
The loss of electron is termed as
The normal boiling point of water is 373 K(at 760 mm). Vapour pressure of water at 298 K is 23 mm. If enthalpy of vaporisation is 40.656 kJ the boiling point of water at 23 mm atmospheric pressure will be
The number of geometrical isomers for [Pt(NH3)2Cl2] is
The number of moles of oxygen in 1 L of air containing 21% oxygen by volume, under standard conditions, is
The oxidation number of chromium in potassium dichromate is
The percentage weight of Zn in white vitriol $[ZnSO_4 . 7H_2O]$ is approximately equal to $(at. \, mass\, of \, Zn= 65, S=32, 0=16 \, and \, H= 1)$
Which of the following statements about enzymes are true?
Sodium is made by the electrolysis of a molten mixture of about 40% NaCl and 60% $CaCl_2$ because
On heating one end of a piece of a metal, the other end becomes hot because of
Phenol, p-Methylphenol, m-Nitrophenol and p-Nitrophenol follows order of increasing acidic strength
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?
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
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
At 25$^\circ$C, the highest osmotic pressure is exhibited by 0.1 M solution of
Which one of the following salt will have the same value of vant Hoff's factor (i) as that of $K_4[Fe(CN)_6]$ ?

Which among the following is paramagnetic?

The temperature of the gas is raised from $27^\circ C\, to\, 927^\circ C$ the root mean square velocity is
Phosphorus has the oxidation state of + 3 in
In which of the following reactions, there is no change in valency ?
Sounds above what level are considered hazardous noise pollution?
At certain temperature, 50% of HI is dissociated into $H_2$ and $I_2$, the equilibrium constant is
Zerevitinov�s determination of active hydrogen in a compound is based upon its reaction with