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

Define thermal conductivity.

Write the unit of thermal conductivity.

Discuss the ideal gas laws.

Explain in detail the thermal expansion.

Describe the anomalous expansion of water. How is it helpful in our lives?

Explain Calorimetry and derive an expression for final temperature when two thermodynamic systems are mixed.

Discuss various modes of heat transfer.

Explain in detail Newton’s law of cooling.

Calculate the number of moles of air is in the inflated balloon at room temperature as shown in the figure.

The radius of the balloon is 10 cm, and the pressure inside the balloon is 180 kPa.

The temperature of a uniform rod of length L having a coefficient of linear expansion α_L is changed by ∆T. Calculate the new moment of inertia of the uniform rod about the axis passing through its center and perpendicular to an axis of the rod.

A man starts bicycling in the morning at a temperature around 25°C, he checked the pressure of tire which is equal to be 500 kPa. Afternoon he found that the absolute pressure in the tyre is increased to 520 kPa. By assuming the expansion of tyre is negligible, what is the temperature of tyre at afternoon?

A sample of an ideal gas is at equilibrium. Which of the following quantity is zero?

Two identically sized rooms A and B are connected by an open door. If the room A is air-conditioned such that its temperature is 4°C lesser than room B, which room has more air in it?

If the internal energy of an ideal gas U and volume V are doubled then the pressure ____________.

The ratio γ = `"C"_"p"/"C"_"v"` for a gas mixture consisting of 8 g of helium and 16 g of oxygen is ____________.

Which of the following shows the correct relationship between the pressure and density of an ideal gas at constant temperature?

The following graph represents the pressure versus number density for an ideal gas at two different temperatures T₁ and T₂. The graph implies

What is the microscopic origin of pressure?

A gas is at temperature 80°C and pressure 5 × 10⁻¹⁰ Nm⁻². What is the number of molecules per m³ if Boltzmann’s constant is 1.38 × 10⁻²³ J K⁻¹

If 10²⁰ oxygen molecules per second strike 4 cm² of wall at an angle of 30° with the normal when moving at a speed of 2 × 10³ ms⁻¹, find the pressure exerted on the wall. (mass of one oxygen atom = 2.67 × 10⁻²⁶ kg)