# chapter No.8 Test 9

Paper: Science   Class: 8                   Time Allowed:    One Hour                           Marks: 15

Q1. Circle the correct answer.  (10)

1. Kilo means:
a) 10th times              b) 100th times               c) 1000th times             d) 10000th times
2. The quantities which can be measured are called:
a) Vector quantities               b) Chemical quantities            c) Physical quantities            d) Mechanical quantities
3. A measuring cylinder is used to measure the:
a) Volume of a liquid             b) Quantity of a liquid              c) Unit of a liquid                 d) Condition of a liquid
4. Physical quantities are:
a) Magnitude                   b) Unit                  c) Direction                 d) Magnitude and unit
5. Measuring instruments are used to measuring some:
a) Chemical quantities            b) Physical quantities               c) Vector quantities                d) Mechanical quantities
a) Glass                 b) Plastic              c) Iron                d) Glass or plastic
7. A length of 60mm is equal to:
a) 0.6m                b) 0.06m                 c) 0.006m                d) 0.0006m
8. Sub-multiple of time:
a) 100cm                b) 10-3g                    c)10-3kg                            d) 10-4s
9. Centi means:
a) 10th part                b) 100th part              c) 1000th part                    d) 10000th part
10. A particular unit of volume is:
a) litre                    b) mL                      c) mm                        d)mL3

Q2.Write short answers to these questions:        (15)
1.How parallax error occur?
2.What are measuring instruments?
3.The height of a student is 150 cm .What is his height in meters?
4.Define unit?
5. What do you know about prefix?