18 solutions available
Question 2A solid silver piece is immersed in water contained in a measuring cylinder. The level of water rises from 50 mL to 62 mL. Find the volume...
Question 4A rectangular field is of length 60 m and breadth 35 m. Find the area of the field.
Question 6A piece of brass of volume 30 cm3 has a mass of 252 g. Find the density of brass in:(i) g cm-3(ii) kg m-3
Question 7The mass of an iron ball is 312 g. The density of iron is 7.8 g cm-3. Find the volume of the ball.
Question 8A cork has a volume 25 cm3. The density of cork is 0.25 g cm-3. Find the mass of the cork.
Question 9The mass of 5 litre of water is 5 kg. Find the density of water in g cm-3.
Question 10A cubical tank of side 1 m is filled with 800 kg of a liquid. Find:(i) the volume of tank(ii) the density of liquid in kg m-3.
Question 11A block of iron has dimensions 2 m x 0.5 m x 0.25 m. The density of iron is 7.8 g cm-3. Find the mass of the block.
Question 12The mass of a lead piece is 115 g. When it is immersed into a measuring cylinder, the water level rises from 20 mL mark to 30 mL mark....
Question 14A car travels a distance of 15 km in 20 minute. Find the speed of the car in:(i) km h-1(ii) m s-1
Question 15How long a train will take to travel a distance of 200 km with a speed of 60 km h-1?
Question 16A boy travels with a speed of 10 m s-1 for 30 minute. How much distance does he travel?
Question 18Express 15 m s-1 in km h-1.
Question 1Write true or false for each statement:(a) The S.I. unit of volume is litre.(b) A measuring beaker of capacity 200 mL can measure only the...
Question 3State two smaller units of volume. How are they related to the S.I. unit?
Question 5Name two devices which are used to measure the volume of an object. Draw their neat diagrams.
Question 13How does the density of water change when:(a) it is heated from 0°C to 4°C,(b) it is heated from 4°C to 10°C ?
Question 17A car travels with a speed 12 m s-1, while a scooter travels with a speed 36 km h-1. Which of the two travels faster?