HSC Science (Computer Science) 12th Standard Board Exam - Maharashtra State Board Question Bank Solutions for Chemistry

How is nitromethane prepared from the following?

alkyl halide

How is nitromethane prepared from the following?

α-nitroalkene

Write the structure of simple triglycerides.

State the function of insulin.

How van’t Hoff factor is related to the degree of dissociation?

Arrange the following oxyacids of chlorine - HClO, HClO₂, HClO₃, and HClO₄ with respect to increasing order of oxidizing power.

Write any two uses of Chlorine.

Define Reference electrode

What is the action of chlorine on CS₂

Answer the following.

What is the action of chlorine on Excess NH₃.

Complete and rewrite the balanced chemical equations

How will you convert acetone to acetone cyanohydrin?

State and explain Hess’s law of constant heat summation.

The density of silver having an atomic mass of 107.8 g mol^{- 1} is 10.8 g cm^-3. If the edge length of cubic unit cell is 4.05 × 10^{- 8}
 cm, find the number of silver atoms in the unit cell.
 ( N_A = 6.022 × 10²³, 1 Å = 10^-8 cm)

What is the ‘Ellingham diagram’? Write any ‘two points’ of its significance. 

Which of the following compounds of chlorine is used as refrigerant? 

Number of types of orthorhombic unit cell is ___________.

Obtain the relationship between freezing point depression of a solution containing nonvolatile-nonelectrolyte solute and its molar mass.

A 5% aqueous solution (by mass) of cane sugar (molar mass 342 g mol^-1) has a freezing point of 271 K. Calculate the freezing point of 5% aqueous glucose solution.

Choose the most correct answer :

The solubility product of a sparingly soluble salt AX is 5.2 × 10^–13. Its solubility in mol dm^–3 is ______.