Advertisements
Advertisements
प्रश्न
Explain why, osmosis can be considered to be a special kind of diffusion. Classify the following into
(i) osmosis, and (ii) diffusion :
- swelling up of a raisin on keeping in water
- spreading of virus on sneezing
- earthworm dying on coming in contact with common salt
- shrinking of grapes kept in thick sugar syrup
- preserving of pickles in salt
- spreading of smell of cake being baked in the kitchen
- aquatic animals using oxygen dissolved in water during respiration
उत्तर
Osmosis is considered to be a special kind of diffusion because it takes place only through a semi-permeable membrane, which allows only solvent particles to pass through it.
- Osmosis: a, c, d and e
- Diffusion: b, f and g.
APPEARS IN
संबंधित प्रश्न
The inter-molecular space is maximum in
Liquids have definite shape and definite volume.
Define matter.
Define the following term of Atom .
Classify the following into elements, compounds and mixtures:
- Sodium
- Soil
- Sugar solution
- Silver
- Calcium carbonate
- Tin
- Silicon
- Coal
- Air
- Soap
- Methane
- Carbon dioxide
- Blood
Which of the following are ‘pure substances’ ?
Ice, Milk, Iron, Hydrochloric acid, Calcium oxide, Mercury, Brick, Wood, Air
Give reason why copper metal is used for making electric wires.
Which one of the following is not a metalloid ?
Which of the following does not have a fixed melting point/boiling point ?
A solution contains 5.6 mL of alcohol mixed with 75 mL of water. Calculate the concentration of this solution.
How will you test whether a given solution is a colloidal solution ?
Name the different types of solutions. Give one example of each.
Which of the following represents the solubility of sugar in water at 20°C ?
What is the difference between colloids and suspensions ?
Justify your answer.
| Figure 1 | Figure 2 | Figure 3 |
 |
 |
 |
The arrangement of particles in three different phases of matter is shown above.
- Which state is represented by Fig. 1?
- In which state will the inter-particle attraction be maximum?
- Which one of them cannot be contained in an open vessel?
- Which one can take the shape of its container?
State whether true or false. If false, correct the statement.
Oil and water are immiscible with each other.
The particles in the matter are extremely small and can be seen even with a powerful microscope.
You want to wear your favourite shirt to a party, but the problem is that it is still wet after a wash. What steps would you take to dry it faster?
Define the term matter.
Define the term matter.
