7th SCIENCE

1. Which of the following is a derived quantity?

b) time a) mass c) area d) length

2. Which of the following is correct?

1L=100cc 1L=10cc 1L=1000cc 1L=1cc

3. SI unit of density is_____

b) kg/m[sup]3[/sup] c) kg/m d) g/m[sup]3[/sup] a) kg/m[sup]2[/sup]

4. Two spheres have mass and volume in the ratio 2:1. The ratio of their density is ______

b) 2:1 d) 1:4 c) 4:1 a) 1:2

5) Light year is the unit of _____

c) density a) distance b) TIME d) both length and time

Informatie: 7th SCIENCE