List of practice Questions

Cumene to Phenol

Convert the following: 
(i) acetaldehyde to isopropyl alcohol. 
(ii) cumene to phenol. 
(iii) anisole to phenol. Write two uses of neon.

Write the preparation of potassium dichromate from chromite ore.
Define acids and bases according to Bronsted-Lowry theory. Derive the relationship between pH and pOH.
Define the electrochemical series and write its two applications.
Derive the formula for the torque acting on a current-carrying loop in a uniform magnetic field and define the magnetic dipole moment with the help of it.
What is meant by a resonant circuit? Write down the required conditions for the L-C-R series resonant circuit and expression for the frequency in the state of resonance.

Explain the difference between the following substances with the help of examples: 

(i) Paramagnetic 
(ii) Diamagnetic 
(iii) Ferromagnetic

What is meant by threshold wavelength \( \lambda_0 \) and threshold frequency \( \nu_0 \) in photoelectric effect? On which factors do the saturation current and the value of cut-off voltage depend?
What is the main difference between a cell and a battery? In which conditions do the following combinations of cells become useful and why?
(i) Series combination
(ii) Parallel combination
(iii) Mixed combination
The focal lengths of a convergent and a divergent lens are \( f_1 \) and \( f_2 \) respectively. If the lenses are placed in contact, then in the following conditions of combination, write the nature of the combined lens and also draw the ray diagram: (i) \( f_1>f_2 \)
(ii) \( f_1<f_2 \)
(iii) \( f_1 = f_2 \)
(i) Condition: \( f_1>f_2 \)
Write postulates of Werner’s theory of coordination complexes. Write the name of a hexadentate ligand.

HF, HCl, HBr, HI (thermal stability)

MF, MCl, MBr, MI (ionic character)
\(\text{HClO}, \text{HClO}_2, \text{HClO}_3, \text{HClO}_4\) (acidic strength)

On which factors and how do the following depend? 

(i) Internal resistance of cell 
(ii) Resistance of conductor

Arrange the following in the increasing order of the property mentioned:

(i) HClO, HClO₂, HClO₃, HClO₄ (acidic strength)

(ii) MF, MCl, MBr, MI (ionic character)

(iii) HF, HCl, HBr, HI (thermal stability)

In a spherical mirror, the distance between the focus point and centre of curvature is \( 20 \, \text{cm} \). Calculate the following and write their names: (i) The distance of pole of mirror from its focal point.
(ii) The distance of pole of mirror from its centre of curvature. \vspace{0.5cm} (i) The distance of pole of mirror from its focal point
For the reaction \( A + B \rightarrow P \):
If \( [B] \) is doubled at constant \( [A] \), the rate of reaction doubles.
If \( [A] \) is tripled and \( [B] \) is doubled, the rate of reaction increases by a factor of 6.
Calculate the rate law equation.

Compare the Astronomical Telescope and Compound Microscope on the basis of the following: 

(i) Components
(ii)Magnifying power
Explain with reason whether any one of the above devices can be used as the other device.
(i) Components

Alcoholic Sodium Hydroxide
The energy of a hydrogen atom in an energy state is \( -3.4 \) electron-volts. For an electron in this energy state, calculate the following: (i) Binding energy
(ii) Ionization potential
(iii) The number of energy states
(iv) The angular momentum
(v) Kinetic energy
(i) Binding Energy
On what factors does the magnetic flux linked with a coil depend? Explain the induced electromotive force on the basis of the following:
(i) Cause
(ii) Magnitude
(iii) Direction

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.