List of top Questions asked in KEAM

Two forms of D-glucopyranose, are called
Match the following:
An organic compound A with the molecular formula C$_6$H$_4$NO$_2$Br is treated with magnesium in dry ether gives an organometallic compound which on treatment with CO$_2$ (dry ice) gives compound B. B on hydrolysis gives C. The name of the products A and C are
The decreasing order of acid strength of the following is} \[ \text{FCH}_2\text{COOH,\ \ NCCH}_2\text{COOH,\ \ NO}_2\text{CH}_2\text{COOH,\ \ ClCH}_2\text{COOH} \]
Which is the reagent used for the following conversion?
An organic liquid A containing C, H and O with p$K_a$ value 15.9, used in polishing woods, on heating with concentrated sulphuric acid gives a gaseous product B with the empirical formula CH$_2$. B decolourises bromine water as well as dilute permanganate solution. The compound A and B are respectively
Which of the following is used in the production of freon refrigerant R-22?
When phenol is treated with excess of bromine water, it gives
Which of the following statement is incorrect with Williamson synthesis?
Which of the following compound is aromatic?
The ligand which is used in the treatment of lead poisoning is
The highest possible oxidation states of uranium and plutonium, respectively, are
The type of isomerism exhibited by the complexes [Co(NH$_3$)$_5$(SO$_4$)]Br and [Co(NH$_3$)$_5$Br]SO$_4$ is
The compound which gives the most stable carbocation in elimination reaction is
Which of the following statement is incorrect?
Chlorine has oxidation number $+7$ in
Which of the following statement is incorrect about the standard electrode potential?
The compound which has the highest freezing point (in K) is
The acid which has the highest ionization constant ($K_a$) at $298,K$ is
The rate constants of a reaction at $300,K$ and $400,K$ are $1.5,s^{-1}$ and $3,s^{-1}$ respectively. The $E_a$ value is [$\log 2 = 0.3010,\ 2.303R=19,J,K^{-1}mol^{-1}$]
Which of the following reaction has the positive value of standard enthalpy of reaction?
The correct increasing order of average bond length for C=C, N=O, C-C, N-O is
Which of the following set of molecules are having zero dipole moment?
Which of the following statement is incorrect about the periodic trend?
5 moles of an ideal gas at $100,K$ are allowed to undergo reversible adiabatic compression till its temperature becomes $200,K$. If $C_v=30,J,K^{-1}mol^{-1}$, calculate $\Delta U$ and $\Delta (pV)$ for this process. $(R=8.0,J,K^{-1}mol^{-1})$