Advertisements
Advertisements
प्रश्न
The correct increasing order of the boiling points of liquid oxygen, liquid argon and liquid nitrogen present in liquid air is :
विकल्प
nitrogen, oxygen, argon
nitrogen, argon, oxygen
argon, oxygen, nitrogen
oxygen, argon, nitrogen
Advertisements
उत्तर
nitrogen, argon, oxygen
Boiling point of liquid nitrogen, liquid argon and liquid oxygen are -196°C, -186°C and -183°C respectively. So, nitrogen will boil off first followed by argon and oxygen.
APPEARS IN
संबंधित प्रश्न
Intermolecular space is maximum in .......... less in ............ and the least in .........
Intermolecular force of attraction is maximum in ............ less in .......... and the least in .............
Fill in the blank :
The state of matter with definite volume and definite shape is called______
Name two processes which provide the best evidence for the motion of particles in matter.
Name the property which enables metals to be drawn into wires.
What elements do the following compounds contain ?
Sugar, Common salt
What are pure substances ? Give two examples of pure substances.
Which of the following are not compounds ?
Chlorine gas, Potassium chloride, Iron powder, Iron sulphide, Aluminium foil, Iodine vapour, Graphite, Carbon monoxide, Sulphur powder, Diamond
What is the most common way of expressing the concentration of a solution ?
How much water should be mixed with 12 mL of alcohol so as to obtain 12 % alcohol solution ?
Which of the following is a sol ?
Shaving cream, Milk, Fog, Soap solution, Hairspray
What is the difference between solutions and colloids ?
100 mL of water at room temperature of 25°C is taken in a beaker and a little of solid S is dissolved in it by stirring to obtain a solution X. More and more of solid S is added to the solution with constant stirring, while keeping the temperature of solution constant at 30°C. After some time it is observed that no more solid dissolves in water and at the same time some solid is also left undissolved at the bottom of the beaker.
- The contents of beaker are filtered through a filter paper to obtain solution Y in the form of a filtrate.
- What name is given to solutions like X ?
- What name is given to solutions like Y ?
- What will you observe if the solution Y at 30°C is cooled down to 10°C by keeping the beaker in crushed ice ? Why ?
- What term is used to denote the amount of solid dissolved in 100 grams of water in a solution lie Y ?
Which technique can be used to detect and identify traces of poison present in the stomach wash of a person ?
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 ?
Asmita went to buy an earthen pot. There she saw many things kept for sale.
What is the difference between a substance and an object?
Non-metals are usually poor conductors of heat and electricity. They are non-lustrous, non-sonorous, non-malleable and are coloured.
Name a non-metal which exists as a liquid at room temperature.
Solids possess very high kinetic energy.
______ is used for industrial refrigeration and transporting frozen food.
