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

The chemical name of rust is ______.

State the reason for the addition of caustic alkali to bauxite ore during the purification of bauxite.

Explain the smelting process.

Which of the following represents a precipitation reaction?

Explain the types of double displacement reactions with examples.

What is cohesion?

State the principle of moments.

Draw a ray diagram to show the image formed by a convex lens when the object is placed between F and 2F.

The value of universal gas constant

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.