List of top Chemistry Questions asked in KEAM

The angular momentum and the energy of the electron in the second Bohr’s orbit are respectively
If the de Broglie wavelengths of proton p and alpha particle \(\alpha\) are same, then
Which of the following amine has the highest boiling point?
Aniline reacts with acetic anhydride in pyridine to give a product which reacts with Br2 in CH3COOH to get
When benzene diazonium chloride is treated with Cu and HBr, bromobenzene, N2 and CuCl are obtained. This reaction is called
Reimer-Tiemann reaction using CHCl3 and aq.NaOH involves the conversion of phenol into
When a mixture of CO and H2 is heated at 573 K-673 K under 200-300 atmospheric pressure in the presence of a catalyst, methanol is produced. The catalyst used is
2-Methylpropene is obtained when sodium methoxide reacts with
The aldehyde that does not respond to Fehling’s test is
When benzoyl chloride is treated with \(H_2\) in the presence of \(Pd-BaSO_4\), benzaldehyde is formed. This reaction is called
Which of the following compound undergoes aldol condensation?
One mole of an alkene on ozonolysis gives two moles of propanone. What is the alkene?
Which of the following is a gas at 300K?
An organic compound is heated with \(Na_2O_2\) then boiled with \(HNO_3\). The solution is then treated with ammonium molybdate. The yellow precipitate obtained is due to the presence of the element
Choose the Swarts reaction in the following:
CH3I cannot be prepared by direct iodination of methane as the reaction is slow and reversible. However, it can be prepared by carrying out the reaction in the presence of
The IUPAC name of the following alkane is \(CH_3-CH_2-CH(C_2H_5)-CH_2-CH(CH_3)-CH_2-CH_3\)
The substance used to convert sodium chromate to sodium dichromate in one of the stages of preparation of potassium dichromate is
The first transition series metal that exhibits only +2, +3, +4 and +6 oxidation states is
\([Ag(NCS)_2]^-\) and \([Ag(SCN)_2]^-\) are
The calculated magnetic moment of two dipositive ions of 3d series element is 4.9 BM. The ions are
The type of hybridisation of Co in \([CoF_6]^{3-}\) complex ion is
A first order reaction is 75% completed in 1000 s at 300 K. What is its half-life period at 300 K?
Which of the following is a first order reaction?
The limiting molar conductance for aqueous solution of CaCl\(_2\) at 298K is 271.6 S cm\(^2\) mol\(^{-1}\). If the limiting ionic conductance of Ca\(^{2+}\) ion at the same temperature is 119 S cm\(^2\) mol\(^{-1}\) what is the limiting ionic conductance of Cl\(^-\) ion?