Advertisements
Advertisements
प्रश्न
During respiration, glucose and oxygen enter our body cells and waste products carbon dioxide and water leave the body cells by the process of :
पर्याय
effusion
osmosis
diffusion
plasmolysis
Advertisements
उत्तर
diffusion
Because diffusion is a process in which there is a movement of particles from a region of high concentration to the one with low concentration across the cell membrane.
APPEARS IN
संबंधित प्रश्न
The inter-molecular space is maximum in
Fill in the blank :
The state of matter with definite volume and definite shape is called______
Explain why steel is used to make railway lines.
When a crystal of potassium permanganate is placed at the bottom of water in a beaker, the water in the whole beaker turns purple on its own, even without stirring. This is an example of :
Give reason why copper metal is used for making electric wires.
Which one of the following is not a metalloid ?
State whether the following statement is true or false :
Sponge is an example of solid sol.
Define Aerosol Give one example.
What will happen if a saturated solution is :
- heated
- cooled
What is meant by a solution?
One of the following represents the solution of solid in a solid. This one is :
State whether the following statement are true or false :
Salt and water can be recovered from an aqueous salt solution by the process of evaporation.
How is water purified on a large scale at water works ? Explain with the help of a labelled diagram. Name the substance which is added to kill germs in the drinking water supply ?
Which one of the following scrap metal cannot be separated by magnetic separation ?
Select the correct answer from A, B, C, D & E for the statement given below:
An atom or group of atoms _________ having a resultant charge.
Asmita went to buy an earthen pot. There she saw many things kept for sale.
How did she identify what she needed?
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?
Name the metals that are used in jewellery.
The particles in the matter are extremely small and can be seen even with a powerful microscope.
Atoms are tiny particles that repel each other when they are squeezed very close.
