HSC Science (Electronics) १२ वीं कक्षा - Maharashtra State Board Question Bank Solutions

The number of octahedral sites per sphere in ccp structure is ______.

Formulate the galvanic cell in which the following reaction occurs.

2Al(S) + 3Cu²⁺(aq) → 2Al³⁺(aq) + 3Cu(S)

Derive integrated rate law for zero order reaction.

What is the effect of denaturation on the structure of proteins?

Calculate the pH of a buffer solution containing 0.1 M CH₃COOH and 0.05 M CH₃COONa. Dissociation constant of CH₃COOH is 1.8 × 10^-5 at 25°C.

Give two reactions in which acidified K₂Cr₂O₇ is used as an oxidizing agent.

A voltaic cell consisting of Fe²⁺(aq)| Fe(s) and Bi³⁺(aq)| Bi(s) electrodes is constructed. When the circuit is closed, mass of Fe electrode decreases and that of Bi electrode increases.

1. Write cell formula .
2. Which electrode is cathode and which electrode is anode?
3. Write electrode reactions and overall cell reaction.

Identify the product in the following reaction: 

Define pH.

How are the following compound obtained from alcohol?

Methanal

How are the following compound obtained from alcohol?

Propanal

Discuss S_N2 mechanism of methyl bromide using aqueous KOH.

The degree of dissociation of 0.1 M monobasic acid is 0.4%. Its dissociation constant is ______.

What is ozone umbrella?

What is EAN rule?

Name any two colligative properties.

Discuss β - elimination reaction.

Complete the following reaction sequences by writing the structural formulae of the organic compounds 'A', 'B' and 'C'.

\[\ce{2-Bromobutan ->[alc. KOH] A ->[][Br2] B ->[][NANH2] C}\]

Find EAN of Co³⁺ in Co [NH₃]₆³⁺.

Complete the following reactions giving major product.

\[\begin{array}{cc}
\ce{CH3}\phantom{................}\\
|\phantom{...................}\\
\ce{CH3 - C - CH2 - Cl ->[Na/dry ether] A}\\
|\phantom{...................}\\
\ce{CH3}\phantom{.................}
\end{array}\]