List of top Chemistry Questions asked in COMEDK UGET

For the equilibrium, \[ 2NOCl (g) \rightleftharpoons 2NO (g) + Cl_2 (g) \] The value of the equilibrium constant, \( K_c \), is \( 3.75 \times 10^{-6} \) at 1069 K. The value of \( K_p \) for the reaction at this temperature will be:

Rate constant \( K \) of a reaction has least value at

Which of the following pairs of ions are iso-electronic and iso-structural?

How much part of any corner atom actually belongs to a particular unit cell?

Among the following enzymes, which one is involved in the given below catalytic reaction? \[ C_6H_{12}O_6 (aq) \rightarrow 2C_2H_5OH (aq) + 2CO_2 (g) \]

In 3d-transition series, which one has the least melting point?

The reaction: \[ \text{ArN}^{+} \text{Cl}^{-} \xrightarrow{\text{Cu/HCl}} \text{ArCl} + N_2 + \text{CuCl} \] is called as:

The total number of nodes is given by:

Which of the following is used as a drug to reduce fever?

Sodium metal crystallizes in a body-centred cubic lattice with a unit cell edge of 4.29 Å. The radius of sodium atom is:

In the equilibrium, \( AB \rightleftharpoons A + B \), if the equilibrium concentration of A is double, then the equilibrium concentration of B will be:

Find the correct order of \( \text{C} - \text{O} \) bond length among \( \text{CO}, \text{CO}_3^{2-}, \text{CO}_2 \).

Which of the following amino acids \( \text{NH}_2 \text{CH} \text{RCOOH} \) contains a polar R group?

Determine the specific rate constant of the reaction. If the half-life period of a first-order reaction is 1402 s, then the rate constant is:

Under which of the following conditions, the gases does not follow Henry's law?

An aqueous solution of \( X \) on addition of hydrogen peroxide in ice-cold conditions gives blue colour to the ethereal layer. Then, \( X \) can be:

Which one of the following sets of monosaccharides forms sucrose?

Carbon monoxide is poisonous to human beings because:

An endothermic reaction is found to have $+ve$ entropy change. The reaction will be

Which of the following equations give ionic product of water? (i) $ { NH_{3(aq)} + H_2 O <=> NH^+_{4(aq)} + OH^{-}_{(aq)}}$ (ii) $ { NH^+_{4(aq)} + H_2 O <=> H_3O^+ + NH_{3(aq)}}$ (iii) $ { NH^{-}_{2(aq)} + H_2 O <=> NH_{3(aq)} + OH^-}$ (iv) $ { NH_{3(aq)} + OH^{-}_{(aq)} <=> NH^{-}_{2(aq)} + H_2O}$

Pick the incorrect statement among those given below.

A mixture of methylamine and dimethylamine is given to you. The reagents used to separate the components of the mixture are

For an adiabatic change in a system, the condition which is applicable will be

The decreasing order of stability of oxides of halogen is

The numbers of $ {H^+}$ ions present in 1 mL of a solution whose pH is 13