List of top Chemistry Questions asked in COMEDK UGET

Which of these represents the correct order of decreasing bond order?
In a 0.2 M aqueous solution, lactic acid is 6.9% dissociated. The value of dissociation constant is
Pick up the correct statement.
Total number of $\sigma$ and $\pi$ bonds in ethene molecule is
A buffer solution has equal volumes of 0.1 M NH$_3$OH and 0.01 M NH$_4$Cl. The pK$_b$ of the base is 5. The pH is
Assuming no change in volume, the time required to obtain solution of pH = 4 by electrolysis of 100 mL of 0.1 M NaOH (using current 0.5 A) will be

Which of the following compounds would not be expected to decarboxylate when heated?

Which of these molecules have non-bonding electron pairs on the central atom?

For a cell reaction, $ A(s) + B^{2+}(aq) \rightarrow A^{2+}(aq) + B(s) $; the standard emf of the cell is 0.295 V at 25°C. The equilibrium constant at 25°C will be
Which of the following shows negative deviation from Raoult's law?
5 g of non-volatile water soluble compound X is dissolved in 100 g of water. The elevation in boiling point is found to be 0.25. The molecular mass of compound X is
The correct decreasing order of negative electron gain enthalpy for C, Ca, Al, F and O is

I and II are

Ti$^2+$ is purple while Ti$^4+$ is colourless because
In Friedel-Crafts alkylation reaction of phenol with chloromethane, the product formed will be
Which among the following is diamagnetic?
Which one of the following is an important component of chlorophyll?
A volatile compound is formed by carbon monoxide and
The complex $ [PtCl_2(en)_2]^{2+} $ ion shows
15 g of $ \text{CaCO}_3 $ completely reacts with
Bohr's radius of 2nd orbit of $ \text{Be}^{3+} $ is equal to that of
How much faster would a reaction proceed at $ 25^\circ C $ than at $ 0^\circ C $ if the activation energy is 65 kJ?
The blue colouration obtained from the Lassaigne's test of nitrogen is due to the formation of
The ion that is isoelectronic with CO is
At 300 K, the half-life period of a gaseous reaction at an initial pressure of 40 kPa is 350 s. When pressure is 20 kPa, the half-life period is 175 s. What is the order of the reaction?