HSC Science Class 11 - Tamil Nadu Board of Secondary Education Question Bank Solutions for Chemistry

Heat of combustion is always ___________.

Molar heat of vapourisation of a liquid is 4.8 kJ mol^–1. If the entropy change is 16 J mol^–1 K^–1, the boiling point of the liquid is

Define molar heat capacity.

Write the unit of molar heat capacity.

Which one of the following binary liquid mixtures exhibits positive deviation from Raoults law?

At 100°C the vapour pressure of a solution containing 6.5 g a solute in 100 g water is 732 mm. If K_b = 0.52, the boiling point of this solution will be ______.

According to Raoults law, the relative lowering of vapour pressure for a solution is equal to ______.

What are state and path functions? Give two examples.

The relative lowering of vapour pressure of a sugar solution in water is 2.5 × 10^-3. The mole fraction of water in that solution is ______.

Which of the following aqueous solutions has the highest boiling point?

The vapour pressure of pure benzene (C₆H₆) at a given temperature is 640 mm Hg. 2.2 g of non – volatile solute is added to 40 g of benzene. The vapour pressure of the solution is 600 mm Hg. Calculate the molar mass of the solute?

According to VSEPR theory, the repulsion between different parts of electrons obey the order.

Shape of ClF₃ is ______.

Explain VSEPR theory. Applying this theory to predict the shapes of IF₇ and SF₆.

Lassaigne’s test for the detection of nitrogen fails in ______.

Connect pair of compounds which give blue colouration/precipitate and white precipitate respectively, when their Lassaigne’s test is separately done.

Describe the reactions involved in the detection of nitrogen in an organic compound by Lassaigne method.

What should be the correct IUPAC name of diethyl chloromethane?

The name of C₂F₄C₁₂ is ______.

Which of the following reagent is helpful to differentiate ethylene dichloride and ethylidene chloride?