List of top Chemistry Questions

Write the net cell reaction during discharging of a lead accumulator.

At temperature \( T \) (K), the equilibrium constant \( K_c \) for the reaction: \[ A_2(g) \rightleftharpoons B_2(g) \] is 99.0. Two moles of \( A_2(g) \) were heated in a 1L closed flask to reach equilibrium. What are the equilibrium concentrations (in \( mol \ L^{-1} \)) of \( A_2(g) \) and \( B_2(g) \)?

At 300 K, 6 g of urea was dissolved in 500 mL of water. What is the osmotic pressure (in atm) of the resultant solution? (R = 0.082 L atm K$^{-1}$ mol$^{-1}$) (C=12;N=14;O=16;H=1)

Given below are certain cations. Using inorganic qualitative analysis, arrange them in increasing group number from 0 to VI.
A) Al³⁺
B) Cu²⁺
C) Ba²⁺
D) Co²⁺
E) Mg²⁺
Choose the correct answer from the options given below

Explain the buffer action of the sodium acetate-acetic acid buffer.

Consider the following reaction:

Identify A and B from the given options:

For the following reaction at 300 K: \[ \text{A}_2(g) + 3\text{B}_2(g) \rightarrow 2\text{AB}_3(g) \] The enthalpy change is \(+15 \, \text{kJ}\), then the internal energy change is:

At 300 K, 3.0 moles of an ideal gas at 3.0 atm pressure is compressed isothermally to one half of its volume by an external pressure of 6.0 atm. The work done (in kJ) is:

The coordination number of Ni in \( [\text{Ni(C}_2\text{O}_4)_3]^{2-} \) is

Write IUPAC names of the following compounds:
(i) CH₃-CH₂-COOH (ii) CH₂=COOH (iii) ClCH₂-COOH (iv) CH₃-CH=CH-COOH (v) CH₃-CO-CH₂-COOH

Explain the following with examples: (i) Aldol condensation (ii) Cannizzaro's reaction

Write the IUPAC names of the following compounds:
(i) \( \text{CH}_3\text{CH}_2\text{OH} \)
(ii) \( \text{CH}_3\text{CH}_2\text{CH}_2\text{OH} \)

What do you understand by rate of a reaction? What factors affect the rate of a reaction? Discuss.

Write the principle of manufacture of ammonia by Haber’s process. How does it react with CuSO\(_4\) solution?

What is soap? How does it act in the cleansing of clothes?

How is a polypeptide bond formed?

Which is Rosenmund reduction?

How would you distinguish among primary, secondary, and tertiary alcohols?

Discuss the utility of DNA fingerprinting.