List of top Chemistry Questions asked in NEET (UG)

Some meta-directing substituents in aromatic substitution are given. Which one is most deactivating?

Nylon is an example of :

On the basis of thermochemical equations (a), (b) and (c), find out which of the algebric relationships given in options (i) to (iv) is correct. (1) $ {C (graphite) + O_2(g) -> CO_2(g); \Delta_rH = x \, kJ \, mol^{-1}}$ (2) $ {C(graphite) + \frac{1}{2} O_2(g) -> CO (g); \Delta_rH = y \, kJ \, mol^{-1}}$ (3) $ {CO (g) + \frac{1}{2} O_2 (g) -> CO_2 (g); }$

The dissociation constant of a weak acid is $1 \times 10^{-4}$ in order to prepare a buffer solution with a $pH = 5$ the [salt] / [Acid] ratio should be :

The basic structural unit of silicates is :-

Nitrogen detection in an organic compound is carried out by Lassaigne's test. The blue colour formed corresponds to which of the following formulae ?

The value of Planck's constant is $6.63 \times 10^{-34} Js$. The speed of light is $3 \times 10^{17} nm \, s^{-1}$. Which value is closest to the wavelength in nanometer of a quantum of light with frequency of $6 \times 10^{15} \, s^{-1}$ ?

Dipole induced dipoloe interactions are present in which of the following pairs :-

Identify the correct order of solubility in aqueous medium :

The number of carbon atoms per unit cell of diamond unit cell is :

An excess of $AgNO_3$ is added to 100 mL of a 0.01 M solution of dichlorotetraaquachromium(III) chloride. The number of moles of $AgCl$ precipitated would be :

Which of the following statements about the interstitial compounds is incorrect ?

The structure of isobutyl group in an organic compound is

Antiseptics and disinfectants either kill or prevent growth of microorganisms. Identify which of the following statements is not true

Among the following ethers, which one will produce methyl alcohol on treatment with hot concentrated HI?

Which of these is not a monomer for a high molecular mass silicone polymer ?

Which one of the following molecules contains no π bond ?

Nylon is an example of

Identify the correct order of solubility in aqueous medium

KMnO₄ can be prepared from K₂MnO₄ as per the reaction:
\(3MnO^{2-}_4+2H_2O⇌2MnO^-_4+MnO_2+4OH^-\)
The reaction can go to completion by removing OH^- ions by adding

An excess of AgNO₃ is added to 100 mL of a 0.01 M solution of dichlorotetraaquachromium(III) chloride. The number of moles of AgCl precipitated would be

XeF₂ is isostructural with

Which of the following is electron-deficient?

Which of these is least likely to act as a Lewis base ?