# Mass, Weight & Density

11 Questions | Attempts: 967
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• 1.
A container, of mass 50g, contains 40cm3 of the liquid. If total mass of the container and liquid is 70g, What is the density of the liquid?
• A.

0.50 g/cm3

• B.

0.80 g/cm3

• C.

1.40 g/cm3

• D.

2.00 g/cm3

• 2.
An astronaut on the Moon has
• A.

The same weight and mass as on the Earth

• B.

The same weight but less mass as on the Earth

• C.

Less weight but the same mass as on the Earth

• D.

Less weight and less mass as on the Earth

• 3.
The SI unit for mass is ......
• A.

Kg

• B.

N

• C.

G

• D.

N/Kg

• 4.
The SI unit for Weight is ......
• A.

Newton

• B.

Kilogram

• C.

Gram

• D.

Newton per Kilogram

• 5.
A room measures 4.0m x 3.0m x 2.0cm. The density of the air in the room is 1.3kg/m3.What is the mass of air in the room?
• A.

0.054 kg

• B.

0.312 kg

• C.

31 kg

• D.

24 kg

• 6.
The weight of a rock on the Moon is 400N. What is the weight of the rock on Earth?(take gravitational field of the Moon is 1.7N/Kg and on Earth as 10N/Kg)
• A.

40N

• B.

400N

• C.

235N

• D.

2350N

• 7.
AN instrument use to measure Weight is ........
• A.

Beam balance

• B.

Simple balance

• C.

Spring balance

• D.

Electronic balance

• 8.
10 kg of iron and 10 kg of feather are put into sack X and sack Y respectively.Which of the following statements is true?
• A.

Sack X has a larger volume than sack Y

• B.

Sack X has a larger ma than sack Y

• C.

Sack Y is denser than sack X

• D.

Sack Y has the same weight as sack X

• 9.
A 100kg rock is being hung freely on the Moon. When an astronaut pushes the rock upwards, he will feel that
• A.

The rock is easier to push than on Earth

• B.

The rock is more difficult to push than on Earth

• C.

The rock requires as much effort to push as on Earth

• D.

The rock requires no effort to push

• 10.
BONUS QUESTION!A cube of side 1 m has a mass of 7500 kg before a through hole of diameter50 cm is drilled on it. The hole is then completely filled with cement of density3.2 g/cm3. What is the density of the composite object?ANSWER = _____________ kg/m3(use pi as 3.14 AND answer in 2 decimal places)
• 11.
The SI unit for density is ......
• A.

Kg/m3

• B.

G/m3

• C.

N/kg

• D.

Kg/m

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