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

Draw a neat, labelled energy profile diagram for SN¹ reaction mechanism.

What is the action of concentrated sulphuric acid on copper

What is the action of concentrated sulphuric acid on potassium chlorate?

Write the electronic configuration of the following element:

Krypton (Z = 36)

Which of the following 0.1 M aqueous solutions will exert the highest osmotic pressure?

Derive the relation between the elevation of boiling point and molar mass of solute.

Define Semipermeable membrane

Explain the geometry of `[Co(NH_3)_6]^(3+)` on the basis of hybridisation. (Z of Co = 27)

Write chemical reactions for different steps in the manufacture of sulphuric acid by lead chamber process. Draw the structure of phosphorous pentachloride

Calculate the work done in the following reaction at 50°C. State whether work is done on the system or by the system.
`"SO"_2("g") + 1/2"O"_(2("g")) rightarrow "SO"_(3("g"))`

Define the following term:
isotonic solution

Define the following term:

Hypotonic solution

Write chemical equation for the following :
Hell - Vohlard - Zelinsky reaction

Write structure and molecular formula for the following compounds:
a. Orthophosphoric acid 
b. Sulphurous acid

What are racemates?

Write the formula for pentaamminechlorocobalt (III) sulphate. 

Choose the most correct option.

In calculating osmotic pressure the concentration of solute is expressed in _______.

Choose the most correct option.

A living cell contains a solution which is isotonic with 0.3 M sugar solution. What osmotic pressure develops when the cell is placed in 0.1 M KCl solution at body temperature?

Choose the most correct option.

The osmotic pressure of blood is 7.65 atm at 310 K. An aqueous solution of glucose isotonic with blood has the percentage (by volume)________.

Answer the following in one or two sentences.

What is osmotic pressure?