List of top Chemistry Questions asked in KEAM

Which among the following is not an antibiotic?
When $MnO_2$ is fused with $KOH$ and $KNO_3$, a coloured compound is formed. Choose the right compound with the appropriate colour
When potassium is reacted with water, which compound $(S)$ is are formed preferentially?
When BH is heated with NH, the final product is
When a mixture of benzaldehyde and acetophenone is treated with dilute $NaOH$ at $293\, K$, it forms
What is the IUPAC official name of element with atomic number 110?
The various types of hydrides and examples of each type are given below : Choose the correct matching from the codes given below :
The reaction, is an example of
The primary and secondary valencies of chromium in the complex ion, $dichlorodioxalatochromium \,(III)$, are respectively
The polymeric hydride is
The photochemical smog can be suppressed by
The pH of normal rain water is
The product formed in the following reaction is: $ C{{H}_{3}}CH(C{{H}_{3}})CH=C{{H}_{2}}+HBr $ $ \xrightarrow{{}}product: $
What structural feature distinguishes glycine from other natural $ \alpha $ -aminoacids?
The monomer of polystyrene is
The most stable +2 oxidation state is exhibited by:
The molecule that contains only $sp^2$ hybrid carbon atoms is
The minerals involved in photolysis of water are (a)$\quad$ Manganese$\quad$$\quad$ (b)$\quad$ Calcium (c) $\quad$Magnesium $\quad$$\quad$(d)$\quad$ Chloride.
The mass of ${CaCO_3}$ required to react completely with 20 mL of 1.0M HCl as per the reaction, ${CaCO_3 + 2HCl -> CaCl2 + CO_2 + H_2O}$ is (At. wt: Ca = 40, C = 12, O = 16).
The maximum oxidation state exhibited by actinide ions is
The efficiency of enzyme catalysis is due to its capacity to
The incorrect statement/s among the following is/are I. $ NCl_5 $ does not exist while $ PCl_5 $ does II. Lead prefers to form tetravalent compounds III. The three $ C-O $ bonds are not equal in the carbonate ion IV. Both $ O_2^+ $ and $ NO $ are paramagnetic
The dipole moment of $H_2S$ is 0.95 D. If the bond angle is $97^\circ $, the S-H bond moment would be (cos 48.5 =0.662)
The difference between the boiling point and freezing point of an aqueous solution containing sucrose (molecular mass = $342 g$ $mol^{-1}$) in $100\,g$ of water is $105 .0^\circ C$. If $K_f \,and\, K_b$ of water are $1.86$ and $0.51 \,K \,kg mol^{-1}$ respectively, the weight of sucrose in the solution is about
The decreasing order of acidic character among ethane $(I)$, ethene $(II)$, ethyne $(III)$ and propyne $(IV)$ is