SSLC (English Medium) Class 10 - Tamil Nadu Board of Secondary Education Question Bank Solutions

What is co-efficient of cubical expansion?

Distinguish between ideal gas and real gas.

What connection is used in domestic appliances and why?

A piece of wire having a resistance R is cut into five equal parts.

1. How will the resistance of each part of the wire change compared with the original resistance?
2. If the five parts of the wire are placed in parallel, how will the resistance of the combination change?
3. What will be ratio of the effective resistance in series connection to that of the parallel connection?

Two resistors when connected in parallel give the resultant resistance of 2 ohms, but when connected in series the effective resistance becomes 9 ohms. Calculate the value of each resistance.

Explain reflection at the boundary of a denser medium.

Tidal energy is ______ type of energy.

Higher Order Thinking Skill (HOT)

What are the objectives for replacing non-conventional energy resources from conventional energy resources?

1 mole of any substance contains ______ molecules.

One mole of any gas occupies ______ ml at S.T.P.

Match the following.

What is Molar volume of a gas?

N₂ + 3H₂ → 2NH₃

(The atomic mass of nitrogen is 14, and that of hydrogen is 1)

1 mole of nitrogen (______ g) +

3 moles of hydrogen (______ g) →

2 moles of ammonia (______ g)

Calculate the number of moles in 27g of Al.

Calculate the number of moles in 1.51 × 10²³ molecules of NH₄Cl.

How many grams are there in the following?

2 moles of the hydrogen molecule, H₂.

How many grams are there in the following?

3 moles of chlorine molecule, Cl₂.

How many grams are there in the following?

5 moles of sulphur molecule, S₈

How many grams are there in the following?

4 moles of the phosphorous molecule, P₄

The secondary suffix used in the IUPAC nomenclature of an aldehyde is ______