List of practice Questions

 By drawing a ray diagram, explain the formation of image in a compound microscope. Establish the formula for magnifying power for it. 
 

What are electromagnetic waves? Draw their propagation diagram. Show the electric field amplitude and magnetic field amplitude in the propagation diagram. 
 

Write the Atomic Numbers of Transuranium Elements.
What are Enzymes?
Isobaric and Adiabatic Processes
Extensive and Intensive Properties

Anisole to Phenol. Write two uses of neon.

Acetaldehyde to Isopropyl Alcohol
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.
Identify ‘A’, ‘B’ and ‘C’ in the following chain reaction and rewrite the chemical reactions: \[ CH_3CH_2OH \xrightarrow{\text{red P}, \, Br_2} A \xrightarrow{\text{KCN, alc.}} B \xrightarrow{\text{LiAlH}_4, \text{Ether}} C \]
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.
Explain Wolff-Kishner reduction reaction. Write the preparation of propanone by using ethanoyl chloride and dimethyl cadmium.

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)