SSLC (English Medium) कक्षा १० - Tamil Nadu Board of Secondary Education Question Bank Solutions

Use the analogy to fill in the blank.

Nuclear Fusion : Extreme temperature, Nuclear Fission : _______

Mark the correct choice as

1. Assertion: Extreme temperature is necessary to execute nuclear fusion.
2. Reason: In a nuclear fusion, the nuclei of the reactants combine releasing high energy.

Coal, petroleum and natural gas are called ______ fuels.

______ is the most commonly used fuel for the production of electricity.

Which of the following is/are a fossil fuel?

1. Tar
2. Coal
3. Petroleum

Why fossil fuels are to be conserved?

Find the percentage of nitrogen in ammonia.

All ores are minerals, but all minerals cannot be called ores.

Periodical removal of one of the products of a reversible reaction increases the yield.

Differentiate reversible and irreversible reactions.

C₂H₅OH + 3O₂ → 2CO₂ + 3H₂O is a ______

Rectified spirit is an aqueous solution that contains about ______ of ethanol.

Which of the following are used as anesthetics?

Dehydration of ethanol by conc. Sulphuric acid forms ______

100% pure ethanol is called ______.

How is ethanoic acid prepared from ethanol? Give the chemical equation.

How is ethanol manufactured from sugarcane?

Give the balanced chemical equation of the following reaction:

Oxidation of ethanol by acidified potassium dichromate.

Write the chemical equation for the following:

Oxidation of ethanol

An organic compound ‘A’ is widely used as a preservative and has the molecular formula C₂H₄O₂. This compound reacts with ethanol to form a sweet-smelling compound ‘B’.

Write the chemical equation for its reaction with ethanol to form compound ‘B’.