List of top Chemistry Questions asked in KEAM

Which one of the following amines forms a non-acidic and alkali insoluble product with p-toluenesulphonyl chloride?
The correct order of ease of cleavage of ether linkage by hydrogen halide follows
When methane is heated with dioxygen in the presence of $Mo_2O_3$ catalyst, the organic product obtained is
The crystal field splitting energy for octahedral $(\Delta_0)$ and tetrahedral $(\Delta_t) $complexes is related as
Which of the following pairs contain metalloid elements in the periodic table?
Dry air is passed through a solution containing $ 10\,g $ of a solute in $ 90\,g $ of water and then through pure water. The loss in weight of solution is $ 2.5\,g $ and that of pure solvent is $ 0.05 \,g $ . Calculate the molecular weight of the solute.
For a first order reaction, the time taken to reduce the initial concentration by a factor of 1/4 is 20 min. The time required to reduce initial concentration by a factor of 1/16 is
The expression for van der Waals equation for the gas law is
Benzoic acid when heated with soda ltme yields
Which one of the following has a different crystal lattice from those of the rest?
Nitrogen shows different oxidation states in the range
Arrange the following ions in the order of decreasing X-0 bond length, where X is the central atom in $SiO_4^{4-},ClO_4^- ,PO_4^{3-},SO_4^{2-}$
Match the following correctly
Detergents are known to pollute rivers and waterways. However, detergents can be made biodegradable and pollution free by taking
The increasing order of the density of alkali metals is
In neutral or faintly alkaline medium, thiosulphate is quantitatively oxidized by $KMnO_4$ to
In the preparation of potassium permanganate, pyrolusite $ (Mn{{O}_{2}}) $ is first converted to potassium manganate $ ({{K}_{2}}Mn{{O}_{4}}) $ . In this conversion, the oxidation state of manganese changes from:
When $H_2$ and $CO$ are reacted in the presence of $Cu$ catalyst, the product/s obtained is/are
How many amino acids are present in insulin?
Lassaigne?s test (with silver nitrate) is commonly used to detect halogens such as chlorine, bromine and iodine but not useful to detect fluorin because the product $AgF$ formed is
How many molecules of $CO_2$ are formed when one milligram of $100\%$ pure $CaCO_3$ is treated with excess hydrochloric acid?
Neopentyl bromide undergoes dehydrohalogenation to give alkenes even though it has no $\beta$- hydrogen. This is due to
When chlorobenzene is reacted with acetyl chloride in the presence of anhydrous AICI$_3$, the major product formed is
Which one of the following isomeric amines has the highest boiling point?
Sea weeds are an important source of