MCQ
A mixture is a / an :
- APure substance
- ✓Impure substance
- CRefined substance
- DNone of the above
✓
Answer
Correct option: B.
Impure substance
A pure substance has only one kind of atom or molecule and has a definite composition throughout.
A refined substance is a substance without any impurity.
But a mixture is neither pure nor a refined substance.
A mixture consists of different elements or compounds combined physically in an unknown ratio.
The constituents of a mixture are not combined chemically, and so the mixture still shows all the properties of its constituents.
A mixture doesn't have a definite boiling or freezing point.
All of these properties of a mixture make it an impure substance.
A refined substance is a substance without any impurity.
But a mixture is neither pure nor a refined substance.
A mixture consists of different elements or compounds combined physically in an unknown ratio.
The constituents of a mixture are not combined chemically, and so the mixture still shows all the properties of its constituents.
A mixture doesn't have a definite boiling or freezing point.
All of these properties of a mixture make it an impure substance.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
During purification of water, which of the following step $(s)$ is incorrect?
→The water level in a measuring cylinder, before and after immersing a metal cube in it, is shown in the figure.
The volume of the metal cube is:
The volume of the metal cube is:
Action and reaction forces never balance out. Because,
An object is put one by one in three liquids having different densities. The object floats with $\frac{1}{9},\frac{2}{11}\ \text{and}\ \frac{3}{7}$parts of their volumes outside the liquid surface in liquids of densities $\mathrm{d}_1, \mathrm{d}_2$ and $\mathrm{d}_3$respectively. Which of the following statement is correct?
→Short branched process coming out of a soma of neuron are:
Which of the following are chemical changes?
- Decaying of wood.
- Burning of wood
- Sawing of wood
- Hammering of nail into wood
Parenchyma cells are:
The correct increasing order of the boiling points of liquid oxygen, liquid argon and liquid nitrogen present in liquid air is:
Poultry farming is practiced for $..........$
→Who is known as the Father of white revolution' in India?