List of top Chemistry Questions

Identify the product 'B' in the following reaction
\(\text{Toluene}\overset{\text{Chromyl chloride}/\text{CS}_2\,}{\rightarrow }A\overset{\text{H}_3\text{O}^+\,}{\rightarrow }B\)
What is the pH of resulting solution when \(20\text{ mL }\frac{M}{10}\text{ NaOH}\) and \(10\text{ mL }\frac{M}{10}\text{ H}_2\text{SO}_4\) are mixed together ?
The solubility of sapringly soluble salt \(\text{AB}_2\) is \(18\cdot 78\times 10^{-4}\text{ g/dm}^3\) What is its solubility product ? (Molar mass of \(\text{AB}_2 = 187\cdot 8\text{ g mol}^{-1}\))
Which of the following is correct relationship between solubility and solubility product for silver oxalate ?
Which of the following processes is an endothermic ?
Identify oxidation number of Sulphur respectively in \(\text{SO}_2\) and \(\text{SO}_4^{2-}\) .
Calculate the quantity of heat released from system when 2 moles of and ideal gas compressed isothermally from volume \(25\text{ dm}^3\) to \(10\text{ dm}^3\) at constant external pressure 4 bar.
Calculate the standard enthalpy of combustion of carbon monoxide if
\(\Delta _fH^{\circ}(\text{CO}) = -110\text{ kJ mol}^{-1}\)
\(\Delta _fH^{\circ}(\text{CO}_2) = -393\text{ kJ mol}^{-1}\)
A gas at \(10\,^{\circ}\text{C}\) occupies a volume of 283 mL. if it is heated to \(20\,^{\circ}\text{C}\) keeping the pressure constant. What is the new volume of gas ?
Find the energy of third stationary orbit of Bohr's model of hydrogen atom if the energy of ground state is \(-E\) J
Which of the following statements regarding Pi \((π)\) bond is NOT true ?
Identify the number of lone pair and bond pair electrons present in the valence shell of central atom in \(\text{BrF}_3\).
How many moles of potassium chlorate are heated to produce \(11\cdot 2\) L oxygen at STP ?
Which from following is a homopolymer ?
Which from following polymers is used to obtain articles like rain coats?
Which from following oils is mainly a saturated fats?
Which carbon atom (numbered from 1' to 5') of ribose lacks the oxygen to form deoxyribose ?
Identify correct decreasing order of basic strength of amines
Which from following compounds is used to prepare adipic acid, enzymatically in Green technology developed by Darth and Frost?
Identify the major product obtained when ethyl amine is reacted with excess of methyl iodide ?
Which from following amino acids does NOT contain chiral carbon?
Which from the following is a correct decreasing order of boiling points for following organic compounds ?
Identify trihydric phenol from following.
Identify ' Z' in the following reaction.
Which among the following is allylic halide?