Browse and search thousands of solved questions for your preparation.
Free questions with full explanations — locked behind signup to protect quality.
What is the change in oxidation number of carbon in the following reaction? $\text{CH}_4(g) + 4\text{Cl}_2(g) \rightarrow \text{CCl}_4(l) + 4\text{HCl}(g)$
The number of unpaired electrons in a paramagnetic diatomic molecule of an element with atomic number 16 is:
In a basic medium, acetophenone yields a stable compound A with $C_2H_5ONa$. The structure of A is:
Which of the following is a basic amino acid?
For the reduction of silver ions with copper metal, the standard cell potential was found to be $+0.46 \text{ V}$ at $25^\circ\text{C}$. The value of standard Gibbs energy, $\Delta G^\circ$ will be: ($F = 96500 \text{ C mol}^{-1}$)
Which one of the followings has maximum number of atoms ?
The number of protons, neutrons and electrons in $^{175}_{71}\text{Lu}$, respectively, are
Identify the product in the following reaction:
Activation energy of any chemical reaction can be calculated if one knows the value of:
The incorrect statement among the following is:
Which of the following reactions cannot form new carbon-carbon bonds?
A and B in the following reactions are: (i) $R-C(O)Cl + H_2 \xrightarrow{Pd/BaSO_4} A$ (ii) $R-C \equiv N + SnCl_2 + HCl \xrightarrow{H_3O^+} B$
The mixture which shows positive deviation from Raoult's law is
Mark the name of the reaction associated with the following conversion:
The incorrect method to synthesize benzaldehyde is:
Identify 'X' in the following reaction.
Which solution is part of Fehling solution 'A' (used in tests for reducing sugars and aldehydes)?
Among the following, the most characteristic oxidation states for lead and tin are, respectively:
Which ion is isoelectronic with $Be^{2+}$?
RNA and DNA are chiral molecules, their chirality is due to: