Question

i. State the scientific term for the following changes:
(b) Naphthalene balls
disappear after few days.
ii. Give scientific reason: Air is a mixture.
iii. Generally, thin people
feel colder than fat people. Why?
iv. Draw a neat labelled diagram of the internal structure of a mitochondrion.
V. Give two examples each:
(a) Hybrid varieties of rice
(b) Hybrid varieties of wheat
vi. Classify the following wastes into biodegradable and non-biodegradable wastes.
Plant leaves, plastic, glass, animal dung​

Answer 1

Answer:

1) sublimation

2) air is called a mixture because it's components can be seperated with processes like fractional distillation

3) the body fat act as an insulator so fat people tend to more body fat compared to skinny people so yes skinny people feel colded.

5a) jaya and ratna

5b) sonalika and kalyan sona

6) plant leaves animal dung biodegradable

plastic and glass non biodegradable