MEDIUM
7th ICSE
IMPORTANT
Earn 100

The density of air is 1.3 kg/m^3. What mass of air is contained in a room measuring 2.5 m×4 m×10 m?

Important Questions on Physical Quantities and Measurement

MEDIUM
7th ICSE
IMPORTANT
Lakhmir Singh's Science Physics>Chapter 1 - Physical Quantities and Measurement>EXERCISES>Q 8
A stone of mass 30 grams is placed in a measuring cylinder containing some water. The reading of the water level increases from 50 cm³ to 60 cm³. What is the density of the stone?
EASY
7th ICSE
IMPORTANT
Lakhmir Singh's Science Physics>Chapter 1 - Physical Quantities and Measurement>EXERCISES>Q 9
Change the speed of 6 m/s into km/h.
MEDIUM
7th ICSE
IMPORTANT
Lakhmir Singh's Science Physics>Chapter 1 - Physical Quantities and Measurement>EXERCISES>Q 10
Bus X travels a distance of 360 km in 5 hours whereas bus Y travels a distance of 476 km in 7 hours. Which bus travels faster?
EASY
7th ICSE
IMPORTANT
Lakhmir Singh's Science Physics>Chapter 1 - Physical Quantities and Measurement>EXERCISES>Q 11
A snail covers a distance of 100 m in 50 h. Calculate the average speed of snail in km h-1.
EASY
7th ICSE
IMPORTANT
Lakhmir Singh's Science Physics>Chapter 1 - Physical Quantities and Measurement>EXERCISES>Q 12
A tortoise moves a distance of 100 m in 15 minutes. What is average speed of tortoise in km h-1?
EASY
7th ICSE
IMPORTANT
Lakhmir Singh's Science Physics>Chapter 1 - Physical Quantities and Measurement>EXERCISES>Q 13
If a sprinter runs a distance of 100 metres in 9.83 seconds, calculate his average speed in km h-1. 
MEDIUM
7th ICSE
IMPORTANT
Lakhmir Singh's Science Physics>Chapter 1 - Physical Quantities and Measurement>EXERCISES>Q 14
A block is 30 centimeters on each side, and so has a volume of 27,000 cm³. It is made of granite, which has a typical density of 2.8 g/cm³. What is the mass of the block?
MEDIUM
7th ICSE
IMPORTANT
Lakhmir Singh's Science Physics>Chapter 1 - Physical Quantities and Measurement>EXERCISES>Q 15
Rohan has to build a box for his scouting project with a volume of 36 cubic centimeters. The base of the box is 6 cm long and 2 cm wide. How high should he build the box?