List of top Chemistry Questions

Consider the following hypothetical reaction. $A+B \rightleftharpoons C+D ; \,\,\,K_{c}=1 \times 10^{-4}$ Which of the following statements is true for this reaction ? In this reaction,

Which of the following carbocations will be most stable ?

In the change of $NO \, \to\, NO^+$ the electron is added to

In $Cu$-ammonia complex, the state of hybridization of $Cu^{+2}$ is

For the Paschen series the values of $n_{1}$ and $n_{2}$ in the expression $\Delta E=Rhc\left(\frac{1}{n_{1}^{2}}-\frac{1}{n_{2}^{2}}\right)$ are

For making distinction between $2$-pentanone and $3$-pentanone the reagent to be employed is

"Electron" is an alloy of

The lock and key model of enzyme action illustrates that a particular enzyme molecule

The effectiveness of an enzyme is affected least by

It is believed that atoms combine with each other such that the outermost shell acquires a stable configuration of $8$ electrons. If stability were attained with $6$ electrons rather than $8$; what would be the formula of the stable fluoride ion?

In the change of $NO \, \to\, NO^+$ the electron is added to

Which of the following reactions will not result in the formation of carbon-carbon bonds ?

The value of electronegativity of /atoms $A$ and $B$ are $1.2$ and $4.0$ respectively. The $\%$ ionic character of the $A - B$ bond is

Aldol condensation does not occur between

Electronic configuration of $ Cu^{ 2 + } $ ion is

Out of $N_2O,SO_2,I_3^+,I_3^- ,H_2O,NO_2^- \, and \, N_3^-$the linear species are

Correct order of bond angles for the following is

Find the organic acid produced from the 11bove reaction

Atoms in a $P_{4}$ molecule of white phosphorus are arranged regularly in the following way :

The oxidant which is used as an antiseptic is :

Chlorobenzene is ...... reactive than benzene towards electrophilic substitution and directs the incoming electrophile to the ...... position.

Which of the following reactions involves carbon-carbon bond formation?

Two ice cubes are pressed over each other until they unite to form one block. Which one of the following forces dominates for holding them together ?

$\left[F e(C N)_{6}\right]^{3-}-$ ion is

Which of the following hybridisations has planar geometry?