List of top Chemistry Questions

The non-existant metal carbonyl among the following is

How much volume of oxygen at $STP$, in litre is required to burn $4\,g$ of methane gas completely?

Which one of the following aqueous solutions of salts has the lowest, pH value?

If the de-Broglie wavelength of a particle of mass $m$ is $100$ times its velocity then its value in terms of its mass $ (m) $ and Plants constant $ (h) $ is

The catalyst used for olefin polymerization is

Of the following compounds the most acidic is

The monomer used to produce orlon is

Which one of the following formulae does not represent an organic compound?

$Al _{2} O _{3}$ is reduced by electrolysis at low potentials and high currents. If $4.0 \times 10^{4}$ amperes of current is passed through molten $Al _{2} O _{3}$ for 6 hours, what mass of aluminium is produced ? (Assume $100 \%$ current efficiency, at. mass of $Al =27\, g\, mol ^{-1}$ ) -

An organic compound on heating with $CuO$ produces $CO_2$, but no water. The organic compound may be

Which of the following does not show optical isomerism? (en = ethylenediamine)

Decreasing order of stability of ions is (i) $\quad$$CH_3 - C^+H - CH_3$ (ii) $\quad$$CH_3-C^+H-OCH_3$ (iii) $\quad$$CH_3 - C^+H - COCH_3$

In the balanced chemical reaction $IO^{-}_{3}+aI^{-}+bH^{+}\to cH_{2}O+ dI_{2}$ $a, b, c$ and $d$ respectively corresponds to

Ribose sugar is present in

IUPAC name of $(CH_3)_3CCl$

The rate equation for a reaction : $A \rightarrow B$ is $r = K[A]^\circ$. If the initial concentration of the reactant is a mol $dm^{-3}$, the half life period of the reaction is

What is the $ [OH^-] $ in the final solution prepared by mixing $20.0\, mL$ of $0.050\, M\, HCl$ with $30.0\, mL$ of $0.10\, M Ba(OH)_2 $ ?

The equivalent conductance of $\frac{ M }{32}$ solution of a weak monobasic acid is $8.0\, mho\, cm ^{2}$ and at infinite dilution is $400\, mho\, cm ^{2}$, The dissociation constant of this acid is -

The oxidation state of $Fe$ in the brown ring complex : $[Fe(H_2O)_5 NO]SO_4$ is

The incorrect statement in respect of Chromyl chloride test is

The reaction involved in the oil of winter green test is salicylic acid ${->[{\Delta}][{\text { Conc. } H _{2} SO _{4}}]}$ product. The product is treated with $Na _{2} CO _{3}$ solution. The missing reagent in the above reaction is

The carbon-carbon bond length in Benzene is

$ {CH_3COOH ->[LiA/H_4] X ->[Cu][300 ^{\circ}C] Y ->[dilute][NaOH] Z}$ In the above reaction $Z$ is

A compound of $'A'$ and $'B'$ crystallises in a cubic lattice in which the $'A'$ atoms occupy the lattice points at the corners of the cube. The $'B'$ atoms occupy the centre of each face of the cube. The probable empirical formula of the compound is