Question

give scientific reason

Answer 1

c. Copper and aluminium are good conductors of electricity. So they are used for electric power transmission
b. Joule is a very small unit of energy
as power consumption is more in buildings as we know, for that kwh is used

Answer 2

Answer:

a. To avoid air oxidation               b. Joule is a small unit

c. Copper and aluminum are good conductors

d. Rainbow is form due to spectrum of sunlight.

Explanation:

a. Edible oil undergoes air oxidation. It becomes rancid, smell and taste of oil changes. Due to these reasons, it is recommended to use air tight container for storing oil for a long time.

b. Since Joule is a very small unit and the energy consumption is large daily life. Thus, to reduce the complexity of large figures, the unit kwh is used for the measurement of electrical energy rather than joule.

c. Copper and aluminum are good conductors of electricity and provide low resistance path to the flow of current. Also, the power loss in the low resistance transmission wire is less.

d. When the sunlight passes through the water droplets present in the atmosphere, it undergoes reflection and refraction to form a rainbow. Hence, rainbow is a beautiful natural phenomena.

#SPJ6