HSC Science इयत्ता ११ - Tamil Nadu Board of Secondary Education Question Bank Solutions for Chemistry

The suspension of slaked lime in water is known as _________.

The name 'Blue John' is given to which of the following compounds?

Formula of Gypsum is

When CaC₂ is heated in atmospheric nitrogen in an electric furnace the compound formed is

A 20 litre container at 400 K contains CO₂ (g) at pressure 0.4 atm and an excess (neglect the volume of solid SrO). The volume of the container is now decreased by moving the movable piston fitted in the container. The maximum volume of the container, when the pressure of CO₂ attains its maximum value will be:

Given that: \[\ce{SeCO3(S)≅ SrO + CO2 (g)}\] [K_p = 1.6 atm]

Write a balanced chemical equation for the following chemical reaction.

heating calcium carbonate

Write a balanced chemical equation for the following chemical reaction.

heating calcium with oxygen

Give the systematic name for the following.

Lime

Mention the uses of Plaster of Paris.

Write the balanced chemical equation for the following process.

evaporating a solution of calcium hydrogen carbonate

Write the balanced chemical equation for the following process.

heating calcium oxide with carbon

How is plaster of Paris prepared?

Give the uses of gypsum.

The table indicates the value of van der Waals constant ‘a’ in (dm³)² atm. mol^-2

The gas which can be most easily liquefied is

Four gases P, Q, R and S have almost the same values of 'b' but their 'a' values (a, b are Van der Waals Constants) are in the order Q < R < S < P. At a particular temperature, among the four gases, the most easily liquefiable one is

The units of Van der Waals constants 'b' and 'a' respectively

State Le – Chateller principle.

Derive the values of critical constants in terms of van der Waals constants.

A sealed container was filled with 0.3 mol H₂(g), 0.4 mol I₂(g) and 0.2 mol HI(g) at 800 K and total pressure 1.00 bar. Calculate the amounts of the components in the mixture at equilibrium given that K = 870 for the reaction, \[\ce{A2 (g) + B2 (g) <=> 2 AB (g)}\].

P₁ and P₂ are the vapour pressures of pure liquid components, 1 and 2 respectively of an ideal binary solution If x₁ represents the mole fraction of component 1, the total pressure of the solution formed by 1 and 2 will be