# chapter No.8 Test 6

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

Q1. Circle the correct answer.  (10)

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

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