Question

(A). Choose the correct option :

1. The standard unit of volume is
a. cubic centimetre
b. cubic metre
c. litre
d. millilitre

2. The SI unit of area is
a. hectare
b. square centimetre
c. square metre
d. all of these

3. To determine the density of a solid, we have to first determine its
a. mass and area
b. weight and area
c. mass and volume
d. weight and volume

4. The CGS unit of density is
a. gram
b. millilitre
c. gram per cubic metre
d. none of these

5. An aeroplane covers a distance of 1000 km in 2 hours. What is the speed of the aeroplane?
a. 200 km/hr
b. 500 km/hr
c. 450 km/hr
d. 1000 km/hr

6. The _________ of a substance is the relationship between the mass of the substance and how much space it takes up.
a. density
b. mass
c. volume
d. none of these

7. Higher the volume of a substance, ________ will be the density of the substance and vice versa.
a. higher
b. lower
c. both a and b
d. none of these

(B). State true or false :

1. Volume is the amount of mass occupied by an object or a substance.

2. Volume of liquids are measured in kilograms.

3. The SI unit of area is cubic metre.

4. The amount of mass in a given volume can be expressed in terms of density.

5. Equal mass of newspaper and iron will have different volumes.

6. Speed tells us how fast an object is moving.

(C). Fill in the blanks :

1. The curve formed in the graduated cylinders when a liquid is poured into it is called the ___________.

2. We can find the area of irregular figures by using _________.

3. Density is the ratio of __________ to ___________.

4. The density of aluminum is __________.

5. The SI unit of speed is ___________.

(D). If a man can walk at a speed of 5 km/hr, then calculate the distance covered by the man in 2 hours.​

Answer 1

Answer:

a b d c a d a true true false false true true