Tag: soluble and insoluble substances

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Questions Related to soluble and insoluble substances

Multiple choice evs nature of things objects that float or sink substances that sink or float soluble and insoluble substances

The ______ sinks in water while the _______ floats.

  1. ship, boat

  2. paper, paper boat

  3. soap cake, soap case

  4. nail, hammer
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The soap cake sinks in water and the soap case floats because the soap cake is solid and doesn't have empty spaces so to float in water whereas soap case which have empty space in which soap settles that space is filled with air and air which is less denser than water helps the case to floats .

Multiple choice evs nature of things objects that float or sink substances that sink or float soluble and insoluble substances

Which of the following sinks in water?

  1. A boat

  2. A piece of paper

  3. A nail

  4. A stick
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A nail can sinks in water as it is denser and does not have space in it.


Boat and stick are made up of wood and its density is less than water and has spaces between the molecules and paper is also less dense than water so does not sink in water.

Multiple choice evs nature of things objects that float or sink substances that sink or float soluble and insoluble substances

Ayesha saw that the first puri ____________ to the bottom of the pan; as it puffed up, it started ____________ on the oil.

  1. float, to sank

  2. sank, floating

  3. reached, floating

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

At first the density of puri is higher than oil so it sinks and then after puri gets filled with air (the air being lighter than oil) which makes to float in oil.

Multiple choice evs nature of things objects that float or sink substances that sink or float soluble and insoluble substances

The density of brass on CGS system is 8.4 $ \displaystyle g/cm^{3} $. Its density in SI system is:

  1. 8.4 $ \displaystyle kg/m^{3} $
  2. 84 $ \displaystyle kg/m^{3} $
  3. 840 $ \displaystyle kg/m^{3} $
  4. 8400 $ \displaystyle kg/m^{3} $
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

SI Unit of density is $ Kg/m^3 $.

So, $8.4  g/cm^3 $ = $8.4 \times 1000 = 8400  kg/m^3 $.
Option D.

Multiple choice evs nature of things objects that float or sink substances that sink or float soluble and insoluble substances

The following is the characteristic property of a substance:

  1. density

  2. volume

  3. weight

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

Density is a characteristic property because it does not change with the varying amount of the substance. No matter how big or small a piece of the substance you have, it will always be the same density because it is the same material.

Multiple choice evs nature of things objects that float or sink substances that sink or float soluble and insoluble substances

Take 2 glasses $A $ and $B$ and put tap water in $A$ and salt water in $B$. Now add 1 egg in each. In which of the glass, an egg will sink?

  1. $A$
  2. $B$

  3. Both

  4. None of them
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Salt water is denser than fresh water. So, if we put egg in salt water the egg floats and if we put egg in tap water the egg will sink.