List of top Chemistry Questions asked in KEAM

The number of S-S bonds and the number of lone pairs in S8 molecule,respectively,are:

Match the following columns (P) with (Q): 

 P Q
 aGrignard reagentiAICl3,
bSandmeyer's reactioniiSodium metal
cCannizzaro reactioniiiCu
dFriedel-Crafts reactionivCH3MgBr
eWurtz reactionvNaOH
Which order is correct in spectrochemical series of ligands:

Match the following complexes (P) with the geometry (Q)

 P Q
a[Cu(NH3)4]2+iTetrahedral
b[Ag(NH3)2]+ iiOctahedral
cFe(CO)5iiiSquare planar
d[Cr(H2O)6]3+ivTriagonal bipyramidal
e[NiCl4]2- vLinear 
Which of the following contains sp hybridised carbon atom?

The geometry of [NiCl4]2- and [Ni(CN)4]2- ions are:

Which of the following compounds is known as inorganic benzene?
The number of electrons in one mole of methane:
The nitrogen oxide that does not contain N-N bond is:
The chemistry teacher asked the students to prepare 20% w/w solution of urea [NH2CONH2] in water. Which one of the following solution does not conform to the required composition?
In a reaction 3A → Products, the concentration of A decreases from 0.4molL-1 to 0.1molL-1 in 20 minutes at 300K. The rate of decrease in [A] during this interval (in molL-1min-1) at 300K is
Which one of the following is the correct relation between Cp and Cv for one mole of an ideal gas? (R is molar gas constant)
A di-negative ion of the element X consists of 10 electrons and 8 neutrons. A dipositive ion of the element Y consists of 12 protons. The number of neutrons in Y is 1.5 times the number of electrons in atom X. Then the mass numbers of X and Y would be in the ratio
A fast moving particle of mass 6.63×10-28g can be located with an accuracy of 1A. The uncertainty in its velocity (in ms-1) is about (h=6.63×10-34 Js)
The vapour pressures of pure liquids X and Y at 350K are 200 mm and 300 mm of Hg respectively. Then the correct vapour pressure (in mm of Hg) of an ideal solution containing X and Y in the mole ratio 3: 2 at the same temperature is
Calculate the number of o and a bonds in 2-n-propylpent-1-ene.
Which one of the following is a polysaccharide?
Which of the following is added to commercial salt to control hypothyroidism?
The product formed, when benzene diazonium fluoroborate is heated with aqueous sodium nitrite solution in the presence of copper is
The primary precursor of photochemical smog that can be metabolised by plants such as Juniparus and Pyrus, is
Conveyor belt is manufactured from
Which one of the following is a non-narcotic analgesics?
Among methanamine, ethanamine. benzenamine, N-methylaniline and N, N-dimethylaniline, the weakest and the strongest base in aqueous phase, respectively are
Choose the correct order of acidity of the following phenols:
(I) m-nitrophenol (II) p-cresol (III) p-nitrophenol (IV) phenol
Which one of the following represents valeraldehyde?