Browse and search thousands of solved questions for your preparation.
Free questions with full explanations — locked behind signup to protect quality.
Which of the following molecule does not possess a $\pi$ bond?
Match the compounds of Xe in Column I with the molecular structure in Column II. Column-I (a) $XeF_{2}$ (b) $XeF_{4}$ (c) $XeO_{3}$ (d) $XeOF_{4}$ Column-II (i) Square planar (ii) Linear (iii) Square pyramidal (iv) Pyramidal
To produce $20 \text{ moles}$ of ammonia via Haber's process, how many moles of hydrogen molecules are required?
A mixture of gases contains $\text{H}_2$ and $\text{O}_2$ gases in the ratio of $1:4$ (w/w). The molar ratio of the two gases in the mixture will be:
Consider the given compound: In the given options, the following for the above compound are, respectively: (i) $sp^{2}$ hybridised carbon atoms and (ii) $\pi$ bonds.
A paramagnetic molecule among the following is:
A mixture of gases contains $\text{H}_2$ and $\text{O}_2$ gases in the ratio of $1:4$ (w/w). What is the molar ratio of the two gases in the mixture?
The correct order of increasing bond angles in the following species is:
Consider the following List-I and List-II: **List-I (Molecule)** (a) $PCl_{5}$ (b) $SF_{6}$ (c) $BeCl_{2}$ (d) $NH_{3}$ **List-II (Shape or geometry)** (i) Trigonal planar (ii) Octahedral (iii) Linear (iv) Trigonal pyramidal Identify the **wrong** match from the given pairs:
Which one of the following bonds produces a solid that reflects light in the visible region and whose electrical conductivity decreases with temperature and has a high melting point?
Match the coordination number and type of hybridisation with the distribution of hybrid orbitals in space based on Valence Bond Theory. **List I (Coordination number and type of hybridisation):** (a) 4, $sp^{3}$ (b) 4, $dsp^{2}$ (c) 5, $sp^{3}d$ (d) 6, $d^{2}sp^{3}$ **List II (Distribution of hybrid orbitals in space):** (i) Trigonal bipyramidal (ii) Octahedral (iii) Tetrahedral (iv) Square planar
The pairs of species of oxygen and their magnetic behaviours are given below. Which of the following represents the correct description?
Concentrated aqueous sulphuric acid is $98\% \text{ H}_2\text{SO}_4$ by mass and has a density of $1.80 \text{ g mL}^{-1}$. The volume of acid required to make one litre of $0.1 \text{ M}$ $\text{H}_2\text{SO}_4$ solution is:
$d\pi - p\pi$ bond is present in:
Which of the following set of molecules will have zero dipole moment?
Which of the following species contains an equal number of $\sigma$ and $\pi$ bonds?
The number of unpaired electrons in a paramagnetic diatomic molecule of an element with atomic number 16 is:
Choose the correct option for the total pressure (in atm.) in a mixture of 4 g O_2 and 2 g H_2 confined in a total volume of one litre at 0°C is : [Given R = 0.082 L atm mol^-1K^-1, T = 273 K]
The incorrect statement among the following for sigma- ($\sigma$) and pi- ($\pi$) bonds formed between two carbon atoms is:
The compound that forms a linear polymer due to hydrogen bonding is: