List of top Chemistry Questions

What are the monomers of Bakelite?
What is the coordination number in a Hexagonal Close-Packed (hcp) structure?

The number of \(\pi\)-bonds present in benzoic acid is:

Which one of the lanthanoids given below is the most stable in divalent form?

The angular momentum of an electron in a stationary state of \(Li^{2+}\) (\(Z=3\)) is \( \frac{3h}{\pi} \). The radius and energy of that stationary state are respectively.

In the following scheme of reaction.
Chemical Reac
X, Y and Z respectively are:
A first order reaction is half completed in 45 minutes. How long does it need for 99.9% of the reaction to be completed?
The correct order of increasing boiling points of the following compounds is: Pentan-1-ol, n-Butane, Pentanal, Ethoxyethane
The mass of sodium acetate (CH3COONa) required to prepare 250 mL of 0.35 M aqueous solution is g. (Molar mass of CH3COONa is 82.02 g/mol)
200 g of 20\% w/w urea solution is mixed with 400 g of 40\% w/w urea solution. What is the weight percentage (w/w \%) of resultant solution?
In the contact process of manufacturing \(\text{H}_2\text{SO}_4\), the arsenic purifier used in the industrial plant contains:
In 2-chloro-3,4-dimethylhexane, how many chiral carbon atoms are present?
Trans-esterification is a reaction between
Which of the following compound(s) is/are chiral?
What is the integrated rate equation for a first-order reaction?
Find the pH if \( pK_b \), \([ \text{base} ]\), and \([ \text{salt} ]\) are given.
Find the total volume of a unit cell given the radius of the atom.
From the options given below, which one of the following is a primary amine?
Which of the following alkanes is tertiary?
Arrange the following substances in decreasing order of their boiling points:
The correct sequence of enzymes involved in the commercial production of ethanol by fermentation from sugar is:
What is X in the following reaction?
$CO + 2H_2 \xrightarrow{X} CH_3OH$

For the reaction: $A_2(g) \rightleftharpoons B_2(g)$

The equilibrium constant $K_c$ is given as 99.0. In a 1 L closed flask, two moles of $B_2(g)$ is heated to $T(K)$. What is the concentration of $B_2(g)$ (in mol L$^{-1}$) at equilibrium?

It is postulated that huge deposits of NaCl (rock salt) and CaCO3 (chalk and marble) are sites of erstwhile oceans, where the salts had been concentrated through weathering by rain and wind and leaching by rivers. Select the correct explanatory statement in this context.
Which of the following solutions, when mixed, will not form a buffer solution?