List of top Chemistry Questions

Which among the following is a neutral complex?
How many gram of sodium (atomic mass $23\, u$) is required to prepare one mole of ethane from methyl chloride by Wurtz reaction?
Which of the following is not a broad spectrum antibiotics ?
Which of the following sets of solutions of urea (mol. mass $60 \,g\, mol^{-1}$) and sucrose (mol. mass $342\, g \,mol^{-1}$) is isotonic?
A compound is formed by cation C and anion A. The anions form hexagonal close packed (hep) lattice and the cations occupy 75% of octahedral voids. The formula of the compound is :
The non-essential amino acid among the following is:
Among the following, the narrow spectrum antibiotic is :
The molar solubility of CaF$_2$ (K$_{sp}$ = 5.3 × 10$^{-11}$) in 0.1 M solution of NaF will be
The pH of 0.01 M NaOH (aq) solution will be
Among the following, the one that is not a green house gas is :
The most stable carbocation, among the following is :-
The oxidation state of Cr in CrO6 is :
A water sample has ppm level concentration of the following metals: $Fe = 0.2; Mn = 5.0; Cu = 3.0; Zn = 5.0.$ The metal that makes the water sample unsuitable drinking is
Propene when treated with cold conc. $H_{2}SO_{4}$ forms a compound which on heating with water gives
The correct sequence of thermal stability of the following carbonates is
The ore that contains both iron and copper is:
The amorphous form of silica is :
Two pi and half sigma bonds are present in:
Noradrenaline is a /an
The correct order of the oxidation states of nitrogen in $NO, N_2O, NO_2$ and $N_2 O_3$ is :
The increasing order of nucleophilicity of the following nucleophiles is : (a) ${CH_3CO^{\ominus}_2}$ (b) ${H_2O} $ (c) ${CH_3SO^{\ominus}_3}$ (d) ${O^{\ominus}H}$
One mole of an ideal gas passes through a process where pressure and volume obey the relation $P =P_{o} \left[1- \frac{1}{2} \left(\frac{V_{0}}{V}\right)^{2}\right] $ .Here $P_o$ and $V_o$ are constants. Calculate the change in the temperature of the gas if its volume changes from $V_o$ to $2 V_o$ .
The correct statement among the following is
The artificial sweetner stable at cooking temperature and does not provide calories is :
Diborane ${(B2H6)}$ reacts independently with ${O_2}$ and ${H2O}$ to produce, respectively