List of top Chemistry Questions

Write chemical equations of dehydration reactions of primary, secondary and tertiary alcohols and also write mechanism of dehydration reaction of primary alcohol.
Write the formula of the following coordination compounds:
(i) Hexa aqua chromium (III) chloride
(ii) Dichlorido diammin e platinum (II)
(iii) Hexa ammine platinum (IV) chloride
(iv) Sodium penta cyano nitrosyl ferrate (II)
Explain primary, secondary, tertiary and quaternary structures of protein in detail.
Write chemical equation for two methods of preparation and three chemical properties of carboxylic acid.
Explain molar conductivity. The resistance of a cell filled with 0.02 mol L$^{-1$ KCl solution is 480 $\Omega$. Calculate the molar conductivity of the solution. (Cell constant = 1.29 cm$^{-1}$).}
The vapour pressure of pure benzene at any temperature is 0.850 bar. 0.5 g non-volatile non-electrolytic solid is dissolved in 39.0 g benzene (molar mass 78 g mol$^{-1}$). The vapour pressure of the solution is 0.845 bar. Calculate the molar mass of the solid.
Explain the nature of carbonyl group and carboxylic group.
Write chemical equation and the method of preparation of ethanol from molasses.
Define standard electrode potential. Calculate the standard electrode potential of the following cell:
Zn / Zn$^{2+}$ $\;\;||\;\;$ Cu$^{2+}$ / Cu when
$E^{0}_{(Zn^{2+}/Zn)} = -0.76 \, V$ and $E^{0}_{(Cu^{2+}/Cu)} = +0.34 \, V$.
Write chemical equation of two chemical properties of glucose.
What happens when—
(i) Chromite ore reacts with potassium carbonate in presence of air.
(ii) Potassium dichromate reacts with ferrous sulphate in presence of sulphuric acid.
(iii) Potassium permanganate is heated up to 513 K.
Define order of reaction. How will you find out the order of reaction of the reaction nA + mB $\rightarrow$ xC + yD?
Which of the following test is not given by aldehydic group present in glucose?
Explain Wurtz and Fittig reactions by examples.
Which of the following amine does not give carbylamine reaction?
Explain the following:
(i) Lanthanoid contraction
(ii) Oxidation states in Lanthanoids and Actinoids
28 g KOH (molar mass = 56) is dissolved in 500 mL solution. Calculate the molarity of the solution.
Explain molarity and molality by example.
Which of the following is obtained by Wolff Kishner reduction?
The most common oxidation states of Mn are –
The concentration of solute in a solution is 3.5 ppm. By which of the following it may be expressed?
The co-ordination number of Cu in [Cu(CN)$_4$]$^{3-$ ion is:}
Explain with reason:
(i) Cr2+ is a reducing agent while Mn3+ is an oxidising agent, while both have d4 configuration.
The resistance of a column formed by a \(0.10\ \mathrm{mol\ L^{-1}}\) concentrated solution is \(6.5\times10^{3}\ \Omega\). Its diameter is \(1\ \text{cm}\) and length is \(50\ \text{cm}\). Calculate its resistivity, conductivity and molar conductivity.
Calculate molality of a solution of 5.0 g of ethanoic acid (\(CH_3COOH\)) in 150.0 g of benzene.