List of top Chemistry Questions

Reactions in zeolite catalyst depend on,

Main axis of a diatomic molecule is $Z$, molecular orbital $p_x $ and $ p_y$ overlaps to form, which of the following orbitals?

$HCl$ gas is covalent and $NaCl$ is an ionic compound. This is because

The carbocation formed in $ S_N1 $ reaction of alkyl halide in the slow step is:

For the reaction $2SO_2 + O_2$ (excess) $\rightarrow\, 2SO_3$ the order of reaction with respect to $O_2$ is

The value of ($\Delta H - \Delta E$) for the reaction $C_6H_6(1) + 7\frac{1}{2} O_2(g) \rightarrow 6CO_2(g) + 3H_2O(I)$ at 270C is (R = 2 cal K-1 mol-1)

The $pH$ of a solution obtained by mixing of $100\, mL$ of a $HCl$ solution of $pH = 2$ with $400\, mL$ of another $HCl$ solution of $pH = 3$ will be

The common name of $K \left[ PtCl _{3}\left(\eta^{2} \cdot C _{2} H _{4}\right)\right]$ is:

The prefix $10^{18}$ is

Polymer used in bullet proof glass is

The by product of Solvay-ammonia process is

Laughing gas is

Graphite is a

The color of $CoCl _{3} \cdot 5 NH _{3} \cdot H _{2} O$ is

Some salts containing two different metallic elements give test for only one of them in solution, such salts are

The metal present in vitamin $B_{12}$ is

Which one the following removes temporary hardness of water ?

Thomas slag is

The number of elements present in the $d$-block of the periodic table is

Cobalt $(60)$ isotope is used in the treatment of :

One of the lines in the emission spectrum of $Li ^{2+}$ has the same wavelength as that of the $2^{\text {nd }}$ line of Balmer series in hydrogen spectrum. The electronic transition corresponding to this line is $n =12 \rightarrow n = x$. Find the value of $x$.

The boiling point of alkyl halide are higher than those of corresponding alkanes because of

The carbylamine reaction is

Which of the following represents hexadentate ligand?

What is the correct increasing order of Bronsted bases?