List of top Chemistry Questions

Which of the following has the highest dipole moment?

When $KMnO_4 $acts as an oxidising agent and ultimately forms $MnO^{2-}_4, MnO_2, Mn_2O_3 \, and \, Mn^{2+}$. Then the number of electrons transferred in each case respectively

Teflon is a polymer of

The normality of mixture obtained by mixing $100\, mL$ of $0.2\, M H _{2} SO _{4}$ and $200\, mL$ of $0.2 \,M\,HCl$ is :

When a graph is plotted between log K and $ \left( \frac{1}{T} \right), $ the slope of line obtained represents: (K = rate constant, T = temperature)

Consider the chemical reaction, $N_2(g)+3H_2(g)\rightarrow 2NH_3(g)$ .The rate of this reaction can be expressed in terms of time derivatives of concentration of $N_2(g), H_2(g) or NH_3(g)$. Identify the correct relationship amongst the rate expressions

For the reaction : $ {H2 + Cl2 ->[{\text{sunlight}}] 2HCl}$ the order of reaction is

How many moles of electron weighs 1 kg?

Atoms can neither be created nor destroyed. Under similar condition of temperature and pressure, equal volume of gases does not contain equal number of atoms.

Which of the following molecular species has unpaired electron (s)?

A similarity between optical and geometrical isomerism is that

A solution of an acid has pH = 4.70. Find out the number of $OH^-$ ions $(pK_w = 14)$

How do we differentiate between $Fe^{3+}$ and $Cr^{3+}$ in group III ?

Consider the following equilibrium in a closed container $ N_2 O_4 \, (g) \rightleftharpoons 2NO_2 \, ( g) $ At a fixed temperature, the volume of the reaction container is halved. For this change, which of the following statements hold true regarding the equilibrium constant $ ( K_p ) $ and degree of dissociation $( \alpha)$ ?

The $pH$ of solution containing $0.10\, M$ sodium acetate and $0.03\, M$ acetic acid is $ \left( pK _{a} \text { for } CH _{3} COOH =4.57\right) $

The ionic product of water increases if:

Geometrical isomerism is not shown by :

Which of the following is a redox reaction?

Compressibility factor for $1$ mole of a van der Waals' gas at $0^{\circ} C$ and $100$ atmospheric pressure is found to be $0.5$ the volume of gas molecules is :

To which block of the periodic table does element with atomic number 56 belong

Thermite is a mixture of iron oxide and

The most stable complex among the following is

Methyl orange is the example of which type of dye?

Number of atoms in the unit cell of $Na ( BCC$ type crystal) and Mg (FCC type crystal) are respectively :