Question

Q1. Define tempering.
Q1. Write two important features of an Ideal home
.
Q2. What is a bridge? How is it useful?
Q3. Define waste. Write a difference between biodegradable
and non-biodegradable waste.
Q4. Explain in brief the three types of bridges.​

Answer 1

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1) Tempering is a heat treatment technique applied to ferrous alloys, such as steel or cast iron, to achieve greater toughness by decreasing the hardness of the alloy. The reduction in hardness is usually accompanied by an increase in ductility, thereby decreasing thed brittleness of the metal.

2) • home should be airy and well-ventilated.

• The design of the interiors should be ergonomic.
• The material used in construction should be of good quality.
• The height of the ceilings should be between 10-12 feet.
• The living rooms must have enough space for dining table & sofa placement.

3) A bridge is a structure to cross an open space or gap. Bridges are mostly useful for crossing rivers, valleys, or roads by vehicles but people have also used bridges for a long time for walking. They allow people or vehicles to cross from one side to another.

4) Biodegradable and Non-Biodegradable Substances. Biodegradable substances are those that degrades or break down naturally. Non-biodegradable substances are those that do not degrade easily. These terms itself defines the ability of the substances which are degradable or not.

5) Bridges can be found in a variety of shapes, but 3 basic designs rule the day; beam, arch, and suspension. Most are built to stand up to 3 basic forces as well; their own weight, the weight of the load (Persons, cars, trucks, animals), and the environmental stresses like wind, water, earthquakes.

Answer 2

Explanation:

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