Advertisements
Advertisements
प्रश्न
Out of a colloid, solution and a suspension :
which one has the smallest particles ?
Advertisements
उत्तर
Solution has the smallest particles.
APPEARS IN
संबंधित प्रश्न
Intermolecular space is maximum in .......... less in ............ and the least in .........
Differentiate between an atom and a molecule.
Name one element, one compound and one mixture.
Which of the following does not have a fixed melting point/boiling point ?
Which of the following is a sol ?
Shaving cream, Milk, Fog, Soap solution, Hairspray
Define solute.
How will you differentiate between a suspension and a colloid ?
What will happen if a saturated solution is :
- heated
- cooled
What is meant by a solution?
One of the following does not show Tyndall effect. This one is :
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 ?
Name the process which can be used to recover salt from an aqueous salt solution.
How will you separate a mixture containing sand and sugar ?
Describe the various steps involved in the separation of iodine, iron filings and salt from a mixture.
With the help of a labelled diagram, describe the method of separating ammonium chloride from a mixture of ammonium chloride and common salt. Mention the difference in the properties of ammonium chloride and sodium chloride which has made this separation possible.
The given mixture contains three constituents A, B and C. The constituent A is a yellow coloured, solid element which dissolves in a liquid D. The constituent B is a blue coloured salt which is insoluble in liquid D but dissolves easily in another liquid E. The constitudent C is a liquid which is used in cooking food and forms a solid fat on hydrogenation.
(a) What do you think could (i) constituent A, and (ii) liquid D be ?
(b) What could (i) constituent B, and (ii) liquid E be ?
(c) What could liquid C be ?
(d) How will you separate the mixture containing A, B and C ?
Differentiate between the-two characteristics of matter – ‘mass’ & ‘weight’.
Name the metals that are used in jewellery.
Intermolecular space is maximum in ______.
Define the term matter.
