List of practice Questions

Which of following reagents is used to avoid further oxidation of aldehydes?
Copper crystallises as face centered cubic lattice, with edge length of unit cell 361 pm. Calculate the radius of copper atom.
Which of the following statements is NOT true for glyceraldehyde?
Aniline reacts with bromine water at room temperature to give
Identify the product ‘B’ in the following reaction.
\[ \text{2,2-Dichloropropane} \xrightarrow[\Delta]{\text{aq. KOH}} A \xrightarrow[\text{ii) H}^+]{\text{i) Mg, Benzene}} B \]
The volume of 400 cm\(^3\) chlorine gas at 400 mm of Hg is decreased to 200 cm\(^3\) at constant temperature. What is the new pressure of the gas?
Identify the polymer from following, that contains amide linkage
What is the bond length of C–H bond in alkanes?
What is molecular formula of allyl bromide?
An element crystallises in bcc structure. The number of unit cells of an element in 4 g of it is (given atomic mass = 40).
In Merck’s method, \( \mathrm{H_2O_2} \) is obtained from
What is the melting point of zinc?
The H–H bond energy is 430 kJ mol\(^{-1}\) and Cl–Cl bond energy is 240 kJ mol\(^{-1}\). \( \Delta H_f \) for HCl is –90 kJ. Then H–Cl bond energy is
Which among the following compounds is obtained when benzene is treated with CO and HCl in presence of catalyst anhydrous \( \mathrm{AlCl_3} \) and \( \mathrm{Cu_2Cl_2} \) under high pressure?
Which among the following is a first oxidation product of butan-2-ol?
Which among the following polymers is an example of addition polymer?
Dumas method is used for estimation of
Which of the following is NOT correct in hybridisation?
Which of the following metals reacts with dilute \( \mathrm{H_2SO_4} \) ?
Which of the following is NOT a tranquilizer?
Which of the following equations shows the relationship between heat of reaction at constant pressure and heat of reaction at constant volume if the temperature is not constant?
Which among the following oxides of nitrogen, the nitrogen atom contains one unpaired electron?
A note produces 4 beats/s with a tuning fork of frequency \(510\,\text{Hz}\) and 6 beats/s with a fork of frequency \(512\,\text{Hz}\). The frequency of the note is
According to Bohr’s postulate, the centripetal force \(F\) necessary for the electron of mass \(m\) in a hydrogen atom to revolve in the \(n^{\text{th}}\) circular orbit round the nucleus as the centre is given by \([e =\) charge on electron, \(h =\) Planck’s constant, \(\varepsilon_0 =\) permittivity of free space\(]\)
A fixed number of spherical drops of a liquid of radius \(r\) coalesce to form a large drop of radius \(R\) and volume \(V\). If \(T\) is the surface tension, then the energy