In this session teacher has discussed about - Air Around Us, What does air contain?, Keeping the air clean, Properties of air.
Session: 
Multiple choice questions:
(1) Which of the following is present in air?
A. Dust B. Table C. Chair
(2) Which of the following makes air dirty?
A. Sun B. Moon C. Dust
(3) _____ can make us ill.
A. Plants B. Animals C. Germs
(4) Which of the following statement is incorrect?
A. Air occupies space
B. Air gives shape to things
C. Air is weightless
Multiple choice questions:
(1) A
(2) C
(3) C
(4) C
