List of top Chemistry Questions

Purple of cassius is
Pure nascent hydrogen is best obtained by
Pure methane can be produced by
Pure water does not conduct electricity because it
Protonic acid is
Propanoyl chloride is subjected to reduction with $ {H_2}$ in boiling xylene in the presence of Pd supported on $ {BaSO_4}$. The product formed is
Propan-2-ol on treatment with copper at $300^{\circ} C $ forms
Primary nitro compounds react with nitrous acid to form nitrolic acid which dissolve in NaOH giving
Primary, secondary and tertiary amines may be separated by using
Pressure of $1 \,g$ of an ideal gas $A$ at $27 \, ^{\circ}C$ is found to be $2$ bar. When $2 \,g$ of another ideal gas $B$ is introduced in the same flask at same temperature the pressure becomes $3$ bar. What would be the ratio of their molecular masses?
Pressure versus temperature graph of an ideal gas of equal number of moles of different volumes are plotted as shown in figure. Choose the correct alternative.
Pressure deviation from ideal behaviour takes place because of
Pressure exerted by a perfect gas is equal to
Powdered substances are more effective adsorbents than their crystalline form because
Potential difference across resting membrane is negatively charged This is due to differential distribution of the following ions
Potassium fluoride $KF$ has $NaCl$ structure. Its density is $248 \,g\, cm^{-3}$ and its molar mass is $58 \,g\, mol^{-1}$. The distance between K+ and F ions in KF is
Potassium crystallizes with a
Position of double bond in alkene can be identified by
Polyvinyl alcohol can be prepared by
Polymerisation of propene using Ziegler-Natta catalyst is advantageous over free radical polymerisation because
Polystyrene is an example of
Polyethylene is obtained from calcium carbide. $CaC_{2} + 2H_{2}O \to Ca(OH)_{2} + C_{2}H_{2}$ $C_{2}H_{2} +H_{2} \to C_{2}H_{4}$ $ nC_{2}H_{4} \to $
Therefore, the amount of polyethylene obtained for $64 \,kg \,CaC_{2}$ is
Polyacrylonitrile is an example of
Polyblend is
Point out the false statement