Density

Q.

Milk has a density of 1.25 g/ml, calculate the mass of 1 l of milk.

1. 0.030 g
2. 1.030 g
3. 1.250 kg
4. 1.030 kg

Q.

How are Si and CGS unit of density related

Q.

Is lead heavier than gold?

Q.

A ship loaded with cargo submerges _____ in river water than in sea water.

1. None of these

2. Less

3. More

4. Same

Q.

_______ is the mass of one litre of pure water at 4-degree celsius.

1. 1 newton

2. 1 kilogram

3. 1 pound

4. 1 gram

Q. Define relative density. A cylindrical block of wood of height 4.2m and mass 100Kg floats vertically in water. The relative density of wood is 0.8. What height of the block will be seen above the water?
[3 MARKS]

Q.

For equal volumes, measures of mass of different substances differ.

1. True
2. False

Q.

Why don't we sink into the Dead sea just the same way as we sink in the normal seawater?

1. It is a nature's miracle, cannot be explained.

2. The density of water in the Dead Sea is very high.

3. The dead sea does not support any aquatic life.
   

4. The dead sea does not contain any salt.

Q.

A bottle weighs 20g when empty and when completely filled with water, weighs 50g and when filled with kerosene , it weighs 44g . Calculate the volume of bottle and density of kerosene oil

Q.

What is the mass of 2500ml of pure water at 4 degree Celsius

Q.

Arrange the following substances in order of their increasing density

a)iron

b)cork

c)brass

d)water

e)mercury

Q.

If 2 objects have equal masses and equal volume then ___will be the same for both objects?

Q.

What is density

Q. How to calculate density

Q.

Correct the given statement:

Weight per unit volume of a substance is called density.

Q. Define density.

1. Density of a substance is defined as the weight per unit volume of that substance.
2. Density of a substance is defined as the mass per unit volume of that substance.
3. Density of a substance is defined as the volume per unit mass of that substance.
4. Density of a substance is defined as mass times volume of the substance.

Q.

_______ is the mass of one litre (1000 ml) of pure water at 4-degree celsius.

1. 1 newton

2. 1 pound

3. 1 kilogram

4. 1 gram

Q.

Why will a block of iron float in mercury but sink in water?

Q.

If a sample of metal weighs 210 gm in the air, 180 gm in water.

1. Relative density of liquid is 10

2. Relative density of metal is 7

3. Relative density of liquid is (1/3)

4. Relative density of metal is 3

Q.

If the density and volume of a wooden block are $1.2g/c{m}^3$ and $60c{m}^3$respectively, then find the mass of the wooden block.

1. 50g

2. 72g

3. 120g

4. 80g

Q.

How a density bottle works?? How it helps to measure the relative density of water. Please explain..

Q. Mass per unit volume of a substance is called its density. True or false.

1. True
2. False

Q. Which of the following is not the correct representation of S.I. units?

1. $20s$ time interval
2. $2lb$ of carrots
3. $2kg$ of cooking oil
4. $5m$ of cloth

Q.

What do you mean by the statement - 1kg of sugar occupies more volume than 1 kg of iron.

Q.

Which of the following have the least density?

1. Sea water

2. Salty water

3. Ocean water

4. River water

Q.

The density of water is maximum at _______.

Q.

The density of which of the following will get affected by changing the temperature.

1. iron

2. water

3. $C{O}_2$

4. None of the above

Q.

What is density exactly?

Q. A wire has a mass (0.3+-0.003)g.radius(0.5+-0.005)and length(6+-0.06)cm The maximum permissible error in measuremebt of density is 1). 1 2). 2 3). 3. 4). 4

Q. Name the liquid in which an iron ball sinks.