Physical and Chemical Changes | Baamboozle - Baamboozle

English 8 Public

Physical and Chemical Changes class 7

Study Slideshow

#Science #changes #class 7

Ram took lime water in a bowl and blew air into the water using a straw. The lime water turned milky. Which gas turned water into milky colour?

Carbon dioxide

10

A film of brownish substance on the iron articles left open in humid condition is called

Rust

10

Name the acid vinegar contains?

Acetic Acid

10

Iron + Air + Water -->

Rust

10

Motion of your hands while running, Motion of a child on a see-saw and Motion of the hammer of an electric bell.

Oscillatory motion

10

A simple pendulum undergoes 10 oscillations in 5 seconds. The time period of the pendulum is

1/2s

10

A simple pendulum undergoes 2 oscillations in 20 seconds. The time period of the pendulum is

10s

10

A bus travelled 50 km in 2 hours. The speed of the bus for that period is

25km/hr

10