List of top Questions asked in KEAM

Gabriel's phthalimide synthesis can be used to prepare

Identify the combination of compounds that undergo Aldol condensation followed by dehydration to produce but-2-enal

The correct increasing order of the acid strength of benzoic acid(I), 4-nitrobenzoic acid(II), 3,4-dinitrobenzoic acid(III) and 4-methoxybenzoic acid(IV) is

The compound of molecular formula C\textsubscript{5H\textsubscript{10}O(A) reacts with Tollen's reagent to give silver mirror but does not undergo aldol condensation. The compound A is}

Which one of the following is not expected to undergo iodoform reaction?

The correct decreasing order of reactivity for a given alkyl (R) group in both S\textsubscript{N1 and S\textsubscript{N}2 reaction mechanisms is}

When n-hexane is heated with anhydrous AlCl\textsubscript{3 and HCl gas, the major product obtained is}

How many monochloro structural isomers are expected in free radical monochlorination of 2-methylbutane?

Chloroform reacts with oxygen in the presence of light to give

In a reaction 2A + B \(\rightarrow\) 3C, the concentration of A decreases from 0.5 mol L\textsuperscript{--1 to 0.3 mol L\textsuperscript{--1} in 10 minutes. The rate of production of 'C' during this period is}

Ammonium ion (NH\textsubscript{4}\textsuperscript{+}) reacts with nitrite ion (NO\textsubscript{2}\textsuperscript{--}) in aqueous solution according to the equation
NH\textsubscript{4\textsuperscript{+}(aq) + NO\textsubscript{2}\textsuperscript{--}(aq) \(\rightarrow\) N\textsubscript{2}(g) + 2H\textsubscript{2}O(l)

The products obtained by the ozonolysis of 2-ethylbut-1-ene are

When but-2-yne is treated with Na in liquid ammonia

Gold sol can be prepared by

The IUPAC name of the complex [Co(NH\textsubscript{3})\textsubscript{2}(H\textsubscript{2}O)\textsubscript{4}]Cl\textsubscript{3 is}

The change in potential of the half-cell Cu\textsuperscript{2+|Cu, when aqueous Cu\textsuperscript{2+} solution is diluted 100 times at 298 K? \(\left( \frac{2.303 RT}{F} = 0.06 \right)\)}

An aqueous solution containing 3 g of a solute of molar mass 111.6 g mol\textsuperscript{--1 in a certain mass of water freezes at --0.125 $^\circ$C. The mass of water in grams present in the solution is ($K_f = 1.86$ K kg mol\textsuperscript{--1})}

A sample of sea water contains $5 \times 10^{-3}$ g of dissolved oxygen in 1 kilogram of the sample. The concentration of O\textsubscript{2} in that sea water sample in ppm is}

Consider the following electrolytic cells
(i) M(s) | M\textsuperscript{2+(aq), 0.1M || X\textsuperscript{2+}(aq), 0.01M | X(s)
(ii) M(s) | M\textsuperscript{2+}(aq), 0.1M || X\textsuperscript{2+}(aq), 0.1M | X(s) and
(iii) M(s) | M\textsuperscript{2+}(aq), 0.01M || X\textsuperscript{2+}(aq), 0.1M | X(s)
The cell EMF of the above cells are E\textsubscript{1}, E\textsubscript{2} and E\textsubscript{3} respectively. Which one of the following is true?}

The pH of a saturated solution of a metal hydroxide of formula X(OH)\textsubscript{2 is 12.0 at 298 K. What is the solubility product of the metal hydroxide at 298 K (in mol\textsuperscript{3} L\textsuperscript{--3})?}

In a closed cylinder of capacity 24.6 L the following reaction occurs at 27$^\circ$C
$A_2(s) \rightleftharpoons B_2(s) + 2C(g)$. At equilibrium 1 g of $B_2(s)$ (molar mass = 50 g mol\textsuperscript{--1}) is present. The equilibrium constant $K_p$ for the equilibrium in atm\textsuperscript{2 unit is ($R = 0.082$ L atm K\textsuperscript{--1} mol\textsuperscript{--1})}

The calculated magnetic moment of a divalent ion of an atom with atomic number 24 in aqueous solution is

The values of limiting ionic conductance of H\textsuperscript{+ and HCOO\textsuperscript{--} ions are respectively 347 and 53 S cm\textsuperscript{2} mol\textsuperscript{--1} at 298 K. If the molar conductance of 0.025M methanoic acid at 298 K is 40 S cm\textsuperscript{2} mol\textsuperscript{--1}, the dissociation constant of methanoic acid at 298 K is}

The entropy of vaporization of a liquid is 58 JK\textsuperscript{--1mol\textsuperscript{--1}. If 100 g of its vapour condenses at its boiling point of 123$^\circ$C, the value of entropy change for the process is (Molar mass of the liquid = 58 g mol\textsuperscript{--1})}

The correct descending order of oxidizing power of the following is