List of top Chemistry Questions

Which of the following is used as disinfectant?
Which of the following is a Gattermann reaction?
Which among the following oxides of nitrogen is a brown coloured gas?
The units nanometer and picometer are related as,
Which among the following gases is used in treatment of cancer?
In a first order reaction, 87.5% of reactant is converted into product in 15 minutes. The rate constant for the reaction is given by
Which of the following factors affect molarity of solution?
Which among the following is a product of hydrolysis of one mole raffinose?
Which of the following compounds does NOT react with sodium metal?
A certain sample of gas has a volume of \(0.2\ \text{L}\) at one atmosphere pressure and \(273.15\ \text{K}\). What is the volume of gas at \(273.15^\circ\text{C}\) at the same pressure?
Which among the following formulae represents the \(\omega\)-amino caproic acid?
Which among the following is NOT a polar molecular solid?
\(3.42 \times 10^{-2}\ \text{kg}\) sugar (molar mass = 342) is dissolved in water to produce \(234.2\ \text{g}\) of sugar syrup. What is the molality of sugar syrup?
Which of the following polymers is prepared by using phenol?
Average bond enthalpy of water is \(464.5\ \text{kJ mol}^{-1}\). If the energy required to break the first O–H bond is \(502\ \text{kJ mol}^{-1}\), how much energy per mole is required to break the second O–H bond?
For a reaction \(\Delta H = -30\ \text{kJ}\) and \(\Delta S = -45\ \text{J K}^{-1}\), at what temperature does the reaction change from spontaneous to non-spontaneous?
Compound A on reaction with chlorine in presence of UV light gives B, which when reacted with \(\text{NaNO}_2\) in the solvent N,N-dimethylformamide gives 2-nitrobutane. The compound A is
Which among the following alkali metal chlorides crystallises in the form of a hydrate?
Which among the following is a linear polymer?
Which of the following compounds is obtained by dry distillation of calcium propionate?
Which among the following processes occurs at 1500 K in a blast furnace for extraction of iron?
Which of the following processes for refining of metals involves the principle of selective adsorption of the components from a mixture?
Which of the following types of valences, according to Werner’s theory, is also called primary valence?
During the electrolysis of aqueous sodium chloride, the product obtained at the anode is
Which of the following is obtained by hydrogenation of benzoyl chloride in presence of Pd on BaSO\(_4\)?