List of top Chemistry Questions

How will you obtain (Write chemical equation only):
i) Ethyl alcohol from Grignard's reagent
ii) Tertiary alcohol from Grignard's reagent
iii) Ethyl alcohol from Methyl alcohol
iv) Diethyl ether from Ethyl alcohol
v) Ethyl acetate from Ethyl alcohol
Write short notes on the following:
(i) Hunsdiecker reaction
(ii) Frankland's reaction
(iii) Dehydrohalogenation
Explain the rate of reaction. Describe the order of reaction with example.
The rate constant for a first–order reaction is $60\ \mathrm{s^{-1}$. How much time will it take to reduce the initial concentration of the reactant to $\dfrac{1}{16}$th?}
What is Kohlrausch law? Write its two applications.
What is Nernst equation? Write the relation between standard electrode potential and electrode potential.
When a brown coloured salt (A) of Mn reacts with HCl, a gas (B) is obtained. This gas in excess reacts with NH$_3$ to form an explosive salt (C). Identify (A), (B) and (C) and write the chemical equations.
Write IUPAC names of the following:
(i) K$_2$[HgI$_4$]
(ii) [Cu(NH$_3$)$_4$]SO$_4$
(iii) K$_3$[Al(C$_2$O$_4$)$_3$]
(iv) [Cr(CO)$_6$]
Write the definition of molality. 1/10 mole of a solute is dissolved in 100 g solvent. Calculate the molality of the solution.
How are vitamins classified? Name the vitamin responsible for coagulation of blood.
What is Tollen's reagent? Write the chemical equation for the reactions of this reagent with glucose and fructose.
Write IUPAC names of the following compounds:
(i) CH$_3$CO(CH$_2$)$_4$CH$_3$
(ii) CH$_3$CH$_2$CHBrCH$_2$CH(CH$_3$)CHO
54% (w/w) water is present in the mixture of ethyl alcohol and water. Calculate the mole fraction of ethyl alcohol and water in the mixture.
What is the relation between depression in freezing point and molar mass of the solute?
Complete the following chemical equation: \(\mathrm{CH_3CHBrCH_3}\ \xrightarrow[\ \Delta\ ]{\mathrm{KOH(alc)}\ (A)\ \xrightarrow[\ \mathrm{ROOR}\ ]{\mathrm{HBr}}\ (B)\).}
Write the chemical equations of the following reactions:
i) Reaction of dilute HNO$_3$ with phenol
ii) Reaction of phenol with chloroform in the presence of NaOH (aq.)
Equivalent mass of KMnO$_4$ is different in acidic and alkaline media. Why?
Cu(OH)$_2$ is soluble in NH$_4$OH solution but not in NaOH solution. Why?
Ascorbic acid is –
Colourless ion in the following is –
(CH$_3$)$_3$N is a –
The value of $x$ in the complex ion [Ni(CN)$_4$]$^x$ is –
In the reaction CH$_3$COCl + H$_2$ \xrightarrow{Pd-BaSO$_4$ .......... the product is –}
The amount of Na$_2$CO$_3$ to prepare 500 ml 0.2 M solution is –
Write short notes on the following:
(i) Carbylamine reaction
(ii) Hofmann's bromamide reaction
(iii) Schmidt reaction