List of top Chemistry Questions

Which is the best description of the behavior of bromine in the reaction given below:- H2O + Br2 \(\rightarrow\) HOBr + HBr

In a galvanic cell, the electrons flow from :
In a mixture of acetic acid and sodium acetate the ratio of concentrations of the salt to the acid is increased ten times. Then the pH of the solution :
2 - Acetoxy benzoic acid is used as an :
A nitrogen containing organic compound gave an oily liquid on heating with bromine and potassium hydroxide solution. On shaking the product with acetic anhydride, an antipyretic drug was obtained. The reactions indicate that the starting compound is :
Benzoin is :
$CN^-$ is strong field ligand. This is due to the fact that
CN– is a strong field ligand. This is due to the fact that
Which of the following coordination compounds would exhibit optical isomerism
In an octahedral structure, the pair of d orbitals involved involved in d2 sp3 hybridization is
Which one of the following statements about the zeolites is false ?
2-phenyl propene on acidic hydration, gives
The rate of first order reaction is $1.5 \times 10^{-2}$ mol $L^{-1} \, min^{-1}$ at 0.5 M concentration of the reactant. The half-life of the reaction is
Camphor is often used in molecular mass determination because
The standard e.m.f. of a galvanic cell involving cell reaction with n = 2 is found to be 0.295 V at 25ºC. The equilibrium constant of the reaction would be
The rapid change of $pH$ near the stoichiometric point of an acid base titration is the basis of indicator detection. $pH$ of the solution is related to ratio of the concentrations of the conjugate acid ($HIn$) and base $ (In^-) $ forms of the indicator given by the expression
The Ostwald dilution law is expressed as:
Which of the following is considered to be an anticancer species?
In $BrF_3$ molecule, the lone pairs occupy equatorial positions to minimise
In a regular octahedral molecule, MX6 the number of X–M–X bonds at 180º is

The radioactive isotope \(_{27}^{60}\textrm{Co}\) which is used in the treatment of cancer can be made by (n, p) reaction. For this reaction the target nucleus is

Identify the gas which is readily adsorbed by activated charcoal
In the manufacture of ammonia by the Haber's process, ${N_{2(g)} +3H_{2(g)} <=> 2NH_{3(g)} + 92.3 kJ} $, which of the following conditions is unfavourable ?
The bond order in NO is 2.5 while that in $NO^+$ is 3. Which of the following statements is true for these two species ?
The pair of compounds having metals in their highest oxidation state is