List of top Chemistry Questions

The complex used as an anticancer agent is

Glycosides are hydrolysed in acidic conditions. Glycosides are acetals.

Among the following the strongest acid is

Which one of the following is an amphoteric oxide?

Which of the following pair of compounds are enantiomers ?

Which one of the following is a free- radical substitution reaction

IUPAC name of

The correct order of stability of carbocations, is:

Acrilan is a hard, horny and a high melting material. Which of the following represents its structure ?

Hesss law states that

A gas can expand from 100 mL to 250 mL undera constant pressure of 2 atm. The work done by the gas is

Ethyl isocyanide on hydrolysis in acidic medium generates

Bottles containing $ {C6H5I}$ and $ {C6H5CH2I}$ lost their original labels. They were labelled A and B for testing. A and B were separately taken in test tubes and boiled with $ {NaOH }$ solution. The end solution in each tube was made acidic with dilute $ {HNO3}$ and then some $ {AgNO3}$ solution was added. Substance B gave a yellow precipitate. Which one of the following statements is true for this experiment ?

Several blocks of magnesium are fixed to the bottom of a ship to

When rain is accompanied by a thunderstorm, the collected rain water will have a pH value

The atomic number of V, Cr, Mn and Fe are respectively 23, 24, 25 and 26.Which one of these may be expected to have the highest second ionisation enthalpy ?

For making good quality mirrors, plates of float glass are used. These are obtained by floating molten glass over a liquid metal which does not solidify before glass. The metal used can be

According to the kinetic theory of gases, in an ideal gas, between two successive collisions, a gas molecule travels

The solubilities of carbonates decrease down the magnesium group due to a decrease in :

Which one of the following processes will produce hard water ?

The substance not likely to contain $CaCO _{3}$ is:

In curing cement plasters water is sprinkled from time to time. This helps in :

In an irreversible process taking place at constant $T$ and $P$ and in which only pressure-volume work is being done, the change in Gibbs free energy (dG) and change in entropy (dS), satisfy the criteria:

The internal energy change when a system goes from state $A$ to $B$ is $40 \,k J / mol$. If the system goes from $A$ to $B$ by a reversible path and returns to state $A$ by an irreversible path, what would be the net change in internal energy?

The de-Broglie wavelength of a tennis ball of mass $60\, g$ moving with a velocity of $10 m / s$ is approximately : (Planck's constant, $h=6.63 \times 10^{-34} \,Js$ )