List of practice Questions

State Huygens' principle. Plane wave incident at angle i on reflecting surface. Construct reflected wavefront and prove i=r.

A can complete a task in 6 days, B can complete it in 8 days, and C can complete it in 12 days. If they all work together, how many days will be required to complete the task?

Let \( y = y(x) \) be the solution of the differential equation \(\frac{dy}{dx} = 2x(x + y)^3 - x(x + y) - 1, \quad y(0) = 1.\)Then,  \(\left( \frac{1}{\sqrt{2}} + y\left(\frac{1}{\sqrt{2}}\right) \right)^2\)equals:

State Faraday's second law of electrolysis. How will the pH of aqueous NaCl solution be affected when it is electrolyzed?

Write any two advantages of fuel cells over primary and secondary batteries?

Write the reaction involved in Hell-Volhard-Zelinsky reaction.

Why is geometrical isomerism not possible in tetrahedral complexes having two different types of unidentate ligands coordinated with the central metal?

Arrange the following complex ions in increasing order of their crystal field splitting energy (\( \Delta_0 \)):
\(\text{[Co(NH}_3\text{)}_6]^{3+}, \, \text{[CoF}_6]^{3-}, \, \text{[Co(CN)}_6]^{3-}\)

What is the difference between an ambidentate ligand and a bidentate ligand?

Calculate emf of the following cell at 25°C:
\(\text{Zn (s)} | \text{Zn}^{2+} (0.001M) || \text{Cd}^{2+} (0.1M) | \text{Cd (s)}\) Given: \( E^\circ_{\text{Zn}^{2+}/\text{Zn}} = -0.76 \, \text{V}, E^\circ_{\text{Cd}^{2+}/\text{Cd}} = -0.40 \, \text{V} \)
\([ \log 10 = 1 ]\)

What is the structural feature that characterizes a reducing sugar?

What is the structural difference between nucleoside and nucleotide?

Arrange the following in decreasing order of their acidic strength:
\( \text{CH}_3\text{COOH}, \, \text{O}_2\text{N}-\text{CH}_2\text{COOH}, \, \text{HCOOH} \)

Name the reagent in the following reaction:
\( \text{CH}_3\text{CH} = \text{CH}-\text{CN} \xrightarrow{} \text{CH}_3\text{CH} = \text{CH}-\text{CHO} \)

Why do transition metals and their compounds act as good catalysts?

What is the cause of contraction in the atomic size of lanthanoids?

Define lanthanoid contraction. How does it affect the atomic radii of the third transition series and the second transition series?

In aqueous media, which is a stronger reducing agent — Cr³⁺ or Fe³⁺ and why?

What are essential amino acids?

What is meant by zwitter ionic form of amino acids?

Give one example each for Fibrous protein and Globular protein.

What type of linkages hold monomers of proteins together?