List of top Chemistry Questions

$2.76\, g$ of silver carbonate on being strongly heated yields a residue weighing

For the reaction, 3A + 2B $\to$ C + D, the differential rate law can be written as :

A gaseous reaction $X_2(g) \to Y + \frac{1}{2} Z(g)$ There is increase in pressure from $100 \,mm$ to $120 \,mm$ in $5$ minutes. The rate of disappearance of $X_2$ is

Which of the following hormones is produced under the condition of stress which stimulates glycogenolysis in the liver of human beings?

The reaction of aqueous $KMnO_4$ with $ H_2O_2 $ in acidic conditions gives

The correct order of bond dissociation energy among $N_2, O_2, O_2^-$ is shown in which of the following arrangements ?

The metal that cannot be obtained by electrolysis of an aqueous solution of its salts is

Reason of lanthanoid contraction is

For the reaction, $ SO_2 ( g) + \frac{1}{2} O_2 \, ( g) \rightleftharpoons SO_3 \, ( g) $ if $ K_P = K_C \, ( RT)^x $ X where, the symbols have usual meaning, then the value of x is (assuming ideality)

The octahedral complex of a metal ion $M^{3+} $ with four monodentate ligands $L_1,L_2,L_3 \, and \, L_4 $ absorb wavelengths in the region of red, green, yellow and blue, respectively. The increasing order of ligand strength of the four ligands is

In a monoclinic unit cell, the relation of sides and angles are respectively :

Among the following complexes, the one which shows zero crystal field stabilisation energy (CFSE) is

Which of the following series correctly represents relations between the elements from X to Y?
\(X\to Y\)

In a face centered cubic lattice atoms $A$ are at the corner points and atoms $B$ at the face centered points. If atom $B$ is missing from one of the face centered points, the formula of the ionic compound is :

Which one of the following has largest ionic radius?

The amount of oxygen in $3.6$ moles of water is :

Aminoglycosides are usually used as :

The conjugate base of hydrazoic acid is :

The appearance of colour in solid alkali metal halides is generally due to :

The ratio mass of oxygen and nitrogen of a particular gaseous mixture is $1 : 4$ The ratio of number of their molecule is

$CsCl$ crystallises in body centred cubic lattice. If 'a' is its edge length, then which of the following expressions is correct?

The rate coefficient $(k)$ for a particular reactions is $1.3 \times 10^{-4}\, M^{-1}\, s^{-1}$ at $100^{\circ}C$, and $1.3 \times 10^{-3}\,M^{-1}s^{-1}$ at $150^{\circ}C$ What is the energy of activation $(E_{a})$ (in $kJ$) for this reaction ? ($R =$ molar gas constant $= 8.314 \,JK^{-1}\,mol^{-1})$

Artificial sweetener which is stable under cold conditions only is

A metal has bcc structure and the edge length of its unit cell is $3.04\, ?$. The volume of the unit cell in $cm^3$ will be

According to Bohr?s theory, the angular momentum for an electron of $3rd$ orbit is