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

The vapour pressures of two liquids A and B are 80 mmHg and 60 mm Hg respectively at 25°C. What is the vapour pressure of the solution obtained by mixing 3 moles of A and 2 moles of B?

The science which deals with the design and synthesis of material on nanoscale with different size and shape is called ______.

The correct sequence of the atomic layers in cubic close packing is ______.

Which one of the following elements does NOT belong to first transition series?

How is glucose stored in the animal body?

Write the preparation of viscose rayon.

Why do the d-block elements form coloured compounds?

Define the following:

Plane polarized light

Define the following:

Chirality

The total number of different primitive unit cells is ______.

A solution having highest vapour pressure is ______.

What would be the empirical formula of a compound having a unit cell containing A ion shared equally at the corner of the cube and B ion on the centre of faces of the cube?

Name and draw structure of the repeating unit in natural rubber.

What is the rate constant?

Write the structure of isoprene and the polymer obtained from it.

Explain the variation of vapour pressures with mole fractions of binary solutions of two volatile liquids forming ideal solutions.

State Raoult’s law for solutions containing volatile solutes.

An element crystallises in fee structure. If molar mass of element is 72.7 g mol ^-1, the mass of its one unit cell will be ______.

Write the relationship between mole fraction of solvent and vapour pressure of solution.

What is a chiral carbon atom?