You visited us 1 times! Enjoying our articles? Unlock Full Access!

Byju's Answer

Standard VIII

Physics

Density

Amount of mas...

Question

Amount of mass in a given volume is known as ___.

pressure

No worries! We‘ve got your back. Try BYJU‘S free classes today!

density

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

force

No worries! We‘ve got your back. Try BYJU‘S free classes today!

weight

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is B
density

Amount of mass in a given volume; or how tightly packed the atoms of an object are. This gives us density of an object. The density of solid is more than that of liquid and gas. Gases have the least density as they do not have definite shape and fixed volume due to random motion of molecules.

Suggest Corrections

Similar questions

If Density = Mass/Volume, what is Volume =?, What is mass =?

If Pressure= Force/Area, what is area =?, What is force =?

Density of a substance is given by the formula density=mass/volume. Calculate the density of iron(in g/cu.cm) if a piece of iron of volume 2.50 cu.cm weight 19.675 gram.

Q. At constant temperature, the pressure of a fixed amount of gas is inversely proportional with its volume. This law is popularly known as :

Select the correct alternative:

(a) The correct relation is

(i) Density = Mass $\times$ Volume

(ii) Mass = Density $\times$ Volume

(iii) Volume =Denstity $\times$ Mass

(iv) Density = Mass + Volume

(b) The relative density of alcohol is 0.8. Its density is

(i) 0.8 (ii) 800 kg $m^{-} 3$

(iii) 800 g $c m - 3$ (iv) 0.8 kg $m^{-} 3$

(i) 60.8 g (ii) 75 g

(iii) 48 g (iv) 0.013 g

(d) The density of aluminium is 2.7 g $c m^{-} 3$ and that of brass 8.4 g $c m^{-} 3$ . The correct statement is :

(i) Equal masses of aluminium and brass have equal volumes

(ii) The mass of a certain volume of brass is more than the mass of equal volume of aluminium

(iii) The volume of a certain mass of brass is more than the volume of equal mass of aluminium

(iv) Equal volumes of aluminium and brass have equal masses.

(e) A density bottle has a marking 25 mL on it. It means that :

(i) the mass of density bottle is 25g

(ii) the density bottle will store 25 mL of any liquid it

(iii) the density bottle store 25 mL.of water, but more volume of liquid denser than water.

(iv) the density bottle will store 25 mL of water but more volume of liquid lighter than water.

(f) The correct statement is :

(i) The buoyant force on a body is equal to the volume of the liquid displaced by it.

(ii) The buoyant force on a body is equal to the volume of the body

(iii) The buoyant force on a body is equal to the weight of the liquid displaced by it.

(iv) The buoyant force on a body is always equal to the weight of the body.

(g) A piece of wood floats on water. The buoyant force on wood will be :

(i) zero

(ii) more than the weight of the wood piece

(iii) equal to the weight of the wood piece.

(iv)less than the weight of the wood piece.

(h) The weight of a body is more than the buoyant force experienced by it, due to a liquid. The body will :

(i) sink

(ii) float with its some part outside the liquid

(iii) float just below the surface of liquid

(iv) float with whole of its volume above the surface of liquid.

Q. Assertion :The mass of a given volume of gas is compared to the mass of an equal volume of

H_{2}

. Reason: Vapour density is the ratio of the mass of a volume of a gas to the mass of an equal volume of hydrogen measured under the same conditions of temperature and pressure.

Join BYJU'S Learning Program