List of top Chemistry Questions asked in KEAM

Which pair of the following 4d series of elements has the same number of electrons in 4d subwell?
Thermal decomposition of ammonium dichromate gives
The value of ($\Delta H - \Delta E$) for the reaction $C_6H_6(1) + 7\frac{1}{2} O_2(g) \rightarrow 6CO_2(g) + 3H_2O(I)$ at 270C is (R = 2 cal K-1 mol-1)
Acid catalysed hydration of alkene is an example for
How does the electron gain enthalpies vary across a period and down a group?
n-hexane on heating to $773 \,K$ at $10-20$ atmospheric pressure in the presence of oxides of vanadium supported over alumina, yields
Which one of the following monomers form biodegradable polymer?
Which one of the following is an allylic halide ?
Which one of the following compounds shows cis-trans isomerism?
The equilibrium constant for the equilibrium $PCl _{5}(g) \rightleftharpoons PCl _{3}(g)+ Cl _{2}(g)$ at a particular temperature is $2 \times 10^{-2}\, mol L ^{-1}$. The number of moles of $PCl _{5}$ that must be taken in a one litre flask at the same temperature to obtain a concentration of $0.20$ mole of chlorine at equilibrium is
Which one of the following is not an isomer of $3-methylbut-1-yne$?
The total number of optical isomers possible for 2,3-dibromobutane is
The entropy of vaporization of a liquid is $58 \, JK^{-1} \,mol^{-1}$. 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 = $58 \,g \,mol^{-1})$
Green chemistry deals with
According to MO theory,
The sugar moiety present in $RNA$ molecule is
Novlac, the linear polymer used in paints is
The hybridization of central metal ion in $K_2[Ni(CN)_4]\, and\, K_2[NiCl_4]$ are respectively
Which one of the following is not explained by adsorption?
Which one of the following data has only four significant figures?
Match the following and choose the correct combination from the options given.
The $t_{\frac{1}{2}}$ for a zero order reaction at the initial concentration of 6x 10M is one minute at $27^{\circ}C$. The rate constant at $27^{\circ}C$ in mol $dm^{-3}s^{-1}$ is
Which one of the following is an example for biodegradable polyester?
Williamson?? synthesis of preparing dimethyl ether is a/an
According to Freundlich adsorption isotherm, the amount of gas adsorbed at very high pressure