NCERT Solutions for Class 8 Science for chapter 10 Reaching the Age of Adolescence

Exercises

Question-1 What is the term used for secretions of endocrine glands responsible for changes taking place in the body?

Answer: The term used for secretions of endocrine glands responsible for changes taking place in the body is hormones. Hormones are the chemical substances that are directly released into blood steam by the endocrine glands.

Question-2 Define adolescence.

NCERT Solutions for Class 8 Science for chapter 8 Cell Structure and Functions

Exercises

Question-1 Indicate whether the following statements are true (T) or false (F).

a) Unicellular organisms have one-celled body. (T/F)
b) Musclecells are branched. (T/F)
c) The basic living unit of an organism is an organ. (T/F)
d) Amoeba has irregular shape. (T/F)

Answer:

NCERT Solutions for Class 8 Science for chapter 1 Crop production and management

Exercises

Question- 1. Select the following word from the following list and fill in the blanks

Float, water, crop, nutrients, preparation

NCERT Solutions for Class 8 Science for chapter 6 Combustion and Flame

Question - 1 - List conditions under which combustion can take place.

Answer.

Necessary conditions for combustion are:

(1) Fuel: Fuel is the raw material for combustion.

(2) Air: Combustion takes place only in the presence of air or oxygen.

NCERT Solutions for Class 8 Science fopr chapter 4 Materials Metals and Non-Metals

Question.1 - Which of the following can be beaten into sheets? 

(a) Zinc

(b) Phosphorous

(c) Sulphur

(d) Oxygen

Answer.

Correct option is (a) Zinc.

Explanation: Generally metals can be beaten into sheets. Zinc is metal while phosphorus, sulphur and oxygen are non-metals.