# chapter No.8 Test 2

a) litre                    b) mL                      c) mm                        d)mL3

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

Q1. Circle the correct answer.  (10)

1. Sub-multiple of time:
a) 100cm                b) 10-3g                    c)10-3kg                            d) 10-4s
2. Physical quantities are:
a) Magnitude              b) Unit                         c) Direction                          d) Magnitude and unit
3. The quantities which can be measured are called:
a) Vector quantities             b) Chemical quantities                  c) Physical quantities                 d) Mechanical quantities
4. Kilo means:
a) 10th times                   b) 100th times                  c) 1000th times                  d) 10000th times
a) Glass                      b) Plastic                  c) Iron                        d) Glass or plastic
6. 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
7. Measuring instruments are used to measuring some:
a) Chemical quantities            b) Physical quantities               c) Vector quantities           d) Mechanical quantities
8. Centi means:
a) 10th part                 b) 100th part             c) 1000th part                     d) 10000th part
9. A particular unit of volume is:
a) litre                    b) mL                      c) mm                        d)mL3
10. A length of 60mm is equal to:
a) 0.6m               b) 0.06m             c) 0.006m             d) 0.0006m

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