Tag: sorting materials into groups

Quizzes (10) Questions (20)

Questions Related to sorting materials into groups

Multiple choice evs nature of things properties of materials grouping and classification of objects sorting materials into groups

The density of alcohol is 800 $ \displaystyle Kg/m^{3} $. Its relative density is:

  1. 8

  2. 0.8

  3. 0.08

  4. 800
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Relative density is the ratio of the density of the substance to the density of water.

We know that, density of water is $1 gm/cm^3   = 10^3 kg/m^3$

So, relative density of alcohol = $\dfrac{800}{1000}$ = $0.8$

Hence, option B is correct.
Multiple choice chemistry nature of things properties of materials grouping and classification of objects sorting materials into groups

Solubility is the amount of the .................... present in the saturated solution at a particular temperature.

  1. solute

  2. solvent

  3. dispersed phase

  4. dispersed medium
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

At any particular temperature, a solution that has dissolved as much solute as it is capable of dissolving, is said to be a saturated solution. In other words, when no more solute can be dissolved in a solution at a given temperature, it is called a saturated solution. The amount of the solute present in the saturated solution at this temperature is called its solubility.

Multiple choice chemistry nature of things properties of materials grouping and classification of objects sorting materials into groups

The amount of the solute present in the saturated solution at a particular temperature is called its :

  1. solubility

  2. saturation

  3. solvent concentration

  4. none of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

At any particular temperature, a solution that has dissolved as much solute as it is capable of dissolving is said to be a saturated solution.


The amount of solute present in the saturated solution at this temperature is called its solubility.

Hence, option A is correct.

Multiple choice evs nature of things properties of materials grouping and classification of objects sorting materials into groups

A block of iron (density 9.8 $ \displaystyle g/cm^{3}) $ if added in mercury (density 13.6 $ \displaystyle g/cm^{3} $ ) will:

  1. sink

  2. float

  3. neither float nor sink i.e. remain suspended in mercury

  4. none of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The average density of the object should be less than the density of the fluid in which the object has to float.


The density of object (iron) is less than the fluid (mercury).

Therefore, it will float.


Hence, option B is correct.

Multiple choice evs nature of things properties of materials grouping and classification of objects sorting materials into groups

Opaque objects:

  1. does not transmit most of the light falling on them

  2. transmit most of the light falling on them

  3. absorb most of the light falling on them

  4. are strong and hard
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

An opaque object is neither transparent (allowing all light to pass through) nor translucent (allowing some light to pass through). When light strikes an interface between two substances, in general, some may be reflected, some absorbed, some scattered, and the rest transmitted. 

Multiple choice evs nature of things properties of materials grouping and classification of objects sorting materials into groups

Transparent substances:

  1. absorb all the light incident on them.

  2. allow light to pass through them.

  3. do not allow light to pass through them.

  4. allow light to pass through them only partially.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Transparent substances allows the light to pass through them. Due to this it is possible to see through the transparent substances. 

Example: We are able to see through the some glasses because they are transparent.