Advertisements
Advertisements
प्रश्न
Which of the following does not have a fixed melting point/boiling point ?
पर्याय
gold
ethanol
air
oxygen
Advertisements
उत्तर
air
Air is a homogeneous mixture of different gases. Hence, it does not have a fixed melting or boiling point.
APPEARS IN
संबंधित प्रश्न
Out of solids, liquids and gases, which one has :
- maximum movement of particles ?
- maximum interparticle attractions ?
- minimum spaces between particles ?
Classify the following into elements and compounds :
- H2O
- He
- Cl2
- CO
- Co
What is the other name for impure substances ? Give two examples of impure substances.
Which of the two will scatter light : soap solution or sugar solution ? Why ?
How much water should be mixed with 12 mL of alcohol so as to obtain 12 % alcohol solution ?
What happens when the temperature of a saturated sugar solution is increased ?
Milk of Magnesia is :
One of the following liquids will leave behind a residue on heating. This one is :
Name the process which can be used to recover salt from an aqueous salt solution.
Name the process which can be used to purify an impure sample of copper sulphate.
Fill in the following blanks with suitable words :
Miscible liquids are separated by .....................
How would you obtain sodium chloride from a mixture of sodium chloride and sulphur without using water ?
If there is a sudden shower, we take shelter under a roof at the roadside. Even though the rain does not fall on us directly, we get wet to some extent. Why ?
Seema visited a Natural Gas Compressing Unit and found that the gas can be liquefied under specific conditions of temperature and pressure. While sharing her experience with friends she got confused. Help her to identify the correct set of conditions
The pressure of gases does not depend on the temperature of the gas and the volume it occupies.
Give an example of liquid in gas.
Define the term matter.
Define the term matter.
Define the term matter.
