List of top Chemistry Questions asked in KEAM

Glucose on oxidation with bromine water gives

Which one of the following has a different crystal lattice from those of the rest?

The crystal field splitting energy for octahedral $(\Delta_0)$ and tetrahedral $(\Delta_t) $complexes is related as

In the estimation of sulphur by Carius method, $0.480\, g$ of an organic compound gives $0.699 \,g$ of barium sulphate. The percentage of sulphur in this compound is (Atomic masses: $Ba\, = 137, S = 32, 0 = 16)$

The reaction of $ CHC{{l}_{3}} $ and alcoholic $ KOH $ with $ p $ -toluidine gives

Consider the following statements concerning $N_2H_4$ 1. It is an exothermic compound 2. It burns in air with the evolution of heat 3. It has kinetic stability 4. In reduces $Fe^{3+}$ to $Fe^{2+}$ in acidic medium Which of the following combination is correct?

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

Which of the following pairs contain metalloid elements in the periodic table?

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

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 zero order reaction, the plot of concentration of reactant $vs$ time is (intercept refers to concentration axis)

Two vessels of volumes $16.4\, L$ and $5\,L$ contain two ideal gases of molecular existence at the respective temperature of $27^?C$ and $227^?C$ and exert $1.5$ and $4.1$ atmospheres respectively. The ratio of the number of molecules of the former to that of the latter is

The major product of the reaction between tert-butyl chloride and sodium ethoxide is

When $H_2$ and $CO$ are reacted in the presence of $Cu$ catalyst, the product/s obtained is/are

The metal that produces red-violet colour in the non-luminous flame is

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:

How many amino acids are present in insulin?

The rate of forward reaction is two times that of the reverse reaction at a given temperature and identical concentration, K equilibrium is

The donor atom in EDTA are

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