List of top Chemistry Questions asked in KEAM

Which one of the following can be prepared by Gabriel phthalimide synthesis?

Which one of the following polymer is a copolymer formed by condensation polymerisation?

Choose the correct statement of the following.

Which one of the following is a benzenoid aromatic compound?

Which one of the following is not an isomer of 3-methylbut-1-yne?

The products obtained by the ozonolysis of 2-methylbut-1-ene are

An organic compound \(A\) with molecular formula \(C_7H_6O\) forms 2,4-DNP derivative and reduces Tollens' reagent. When \(A\) is heated with conc. KOH, it gives sodium benzoate and compound \(B\). The compound \(B\) is

The compound that does not undergo hydrolysis by \(S_N1\) mechanism is

Which one of the following is a secondary alcohol?

Which one of the following is an ambidentate ligand?

Which one is not correctly matched?

Which one of the following actinoid has no electron in 6d orbital?

The catalyst used in the Wacker process of oxidation of ethyne to ethanal is

The correct formula of dichlorobis(triphenylphosphine) nickel(II) is

Choose the correct statements about diborane. I. It is prepared by the oxidation of sodium borohydride with iodine. II. It undergoes cleavage reactions with Lewis bases to give borane adducts. III. It is produced on an industrial scale by the reaction of \(BF_3\) with \(LiAlH_4\). IV. It is readily hydrolysed by water to give borazine. V. It burns in oxygen and gives boron trioxide.

Which one of the following nitrates does not give the corresponding metallic oxide, nitrogen dioxide and oxygen on heating?

The oxyacid of phosphorus that contains one \(P-OH\), two \(P-H\) and one \(P=O\) bonds is

In the coagulation of a positive sol, the flocculating power of the ions \(PO_4^{3-}\), \(SO_4^{2-}\) and \(Cl^-\) decreases in the order

Adsorption is accompanied by

Which of the following statement is incorrect about beryllium?

An endothermic reaction \(A\rightarrow B\) has an activation energy of 13 kJ mol\(^{-1}\) and the enthalpy change for the reaction is 2 kJ mol\(^{-1}\). The activation energy of the reaction \(B\rightarrow A\) is

\(CH_4(g)+4Cl_2(g)\rightarrow CCl_4(l)+4HCl(g)\). In the above reaction, the change of oxidation state of carbon is

When the same amount of the solute \(P\) and \(Q\) are separately dissolved in 500 g water, the \(\Delta T_f\) values are 0.15 K and 0.30 K respectively. If the molecular weight of \(P\) is 80 g mol\(^{-1}\), then the molecular weight of \(Q\) is

How many moles of platinum will be deposited on the cathode when 0.40 F of electricity is passed through a 1.0 M solution of \(Pt^{4+}\)?

The rate constant of a first order reaction is \(231\times10^{-5}\ s^{-1}\). How long will 4 g of this reactant reduce to 2 g?