List of practice Questions

What is the action of the following on ethyl bromide ?
(a) silver nitrite
(b) Mg in dry ether 
(c) alcoholic sodium hydroxide

Calculate the standard enthalpy of combustion of methane, if the standard enthalpy of formation of methane, carbon dioxide, and water are \( -74.8 \), \( -393.5 \), and \( -285.8 \) kJ mol\(^{-1} \) respectively.
On what principle does the transformer work? State the following conditions for an ideal transformer:
(i) Leakage of magnetic flux
(ii) Resistance of primary coil
(iii) Resistance of secondary coil
(iv)Dissipation of power
Write the relation between SI and MKS units of electric power.

Write chemical reactions involved in Cannizzaro Reaction of Methanal

If the resistance of ammeter and milli-ammeter are \( x_1 \) and \( x_2 \) respectively, then:
In nuclear reaction, \( _{7}^{15}N + _{0}^{1}n \rightarrow _{6}^{14}C + P \), what is P?
What is the nature of n-type semiconductor?
In lens maker formula \( \frac{1}{f} = (n-1) \left( \frac{1}{R_1} - \frac{1}{R_2} \right) \), which focal length is used?

Write chemical reactions involved in Gattermann-Koch Formylation

Write chemical reactions involved in Rosenmund Reduction

What is \( p\text{-}n \) junction rectifier? Draw circuit diagram of (i) half-wave rectifier (HWR) and (ii) full-wave rectifier (FWR). (i) Half-Wave Rectifier (HWR)
When a capacitor of capacity \( C \) is charged with charge \( q \) and potential difference \( V \), the electric field \( E \) and the electrostatic energy \( U \) is obtained between plates of capacitor. If the capacitor is disconnected from the source and a slab of medium having the same thickness and dielectric constant \( k \) is introduced completely between the plates, calculate the new values of the following:
(i)Capacity
(ii) Potential difference
(iii) Charge
(iv) Electric field
(v) Electrostatic potential energy
(i) Capacity
A plane electromagnetic wave is represented by the equation \[ E = 100 \cos(6 \times 10^8 t + 4x) \, \text{volt/metre}. \] Calculate the following:
(i) The refractive index of the medium
(ii) The velocity of electromagnetic wave in the medium
(iii) The expression for magnetic field
The angle of prism is equal to its minimum deviation angle (\( \delta_m \)). In minimum deviation condition, calculate the following: (i) The angle of incidence
(ii) The angle of refraction
(iii) The refractive index of the material of the prism.
A proton, a deuteron and an alpha particle of same velocity enter perpendicularly in an uniform magnetic field of \( 10^5 \) tesla. Calculate the ratio of their time periods of revolution.
If \( \varepsilon_0 \) and \( \mu_0 \) represent permittivity and permeability of free space, then \( \frac{1}{\sqrt{\varepsilon_0 \mu_0}} \) represents which physical quantity?
How are optical ray and wavefront related with each other?
Define energy band in solids.
Who discovered the photoelectric effect?
A capacitor of capacity \(10 \, \mu F\) is charged with a source of \(2\) volt. Calculate (i) the energy obtained from the source and (ii) the energy stored in the capacitor.
A cell has electromotive force \(1.5\) volt and internal resistance \(0.2\) ohm. It is connected with an external resistance of \(2.8\) ohm. Calculate (i) the potential difference across the open ends of the cell and (ii) the current obtained from the cell.
If wavelength \( \lambda \) represents wave property and momentum \( p \) represents the particle property, then what will the expressions \( \lambda = \frac{h}{p} \) and \( p = \frac{h}{\lambda} \) represent?
If the mass defect of a nucleus is \(2 \times 10^{-6}\) kg, then calculate its binding energy in (i) joule and (ii) electron-volt.
The equivalent resistance of 5 equal resistances connected in series and parallel are \( R_1 \) and \( R_2 \) respectively. If \( R_1 = nR_2 \), then what will be the possible value of \( n \)?