Explanation

A contour line is a line drawn on a topographic map to indicate ground elevation or depression.

Explanation

Leather is a durable and flexible material created by tanning animal rawhide and skins.

The major ingredient of leather is Collagen.

 Leather can be used to make a variety of items, including

• clothing,
• footwear,
• handbags,
• furniture,
• tools 
• sports

SH10-8-2023

Explanation

Photochemical smog which is mainly composed of ozone (O3), Peroxyacetyl nitrate (PAN) and Nox, is also known as ‘brown air’ where solar radiation is intense.

In seasons of lesser solar radiation or areas, smog formation is incomplete and the air is referred to as grey air.

Explanation

Baking powder is a dry chemical and a mixture of bicarbonate and a weak acid (tartaric acid).

Baking powder is used to increase the volume and lighten the texture of baked goods.

Explanation

Carbohydrates are molecules composed of carbon, hydrogen, and oxygen; the ratio of hydrogen atoms to oxygen and carbon atoms is 2:1.

Explanation

Petroleum, natural gas & coal are called non-renewable energy sources.

The most popular renewable energy sources currently are:

1.      Solar energy

2.      Wind energy

3.      Hydro energy

4.      Tidal energy

5.      Geothermal energy

6.      Biomass energy

RK12-12-2022

Explanation

lactose, often called milk sugar, is a disaccharide found in the milk of many mammals, including humman and cows.

Explanation

lactose, often called milk sugar,

It is a disaccharide found in the milk of many mammals, including humman and cows.

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Explanation

Explanation

Carbonic Acid is present in our stomach and part of the digestive process.

Carbonic Acid doesn't contain C-H bond and therefore, it is not an organic acid.

AGM 25-12-2022