1 |
C6H12O6is he formula of glucose. How many oxygen are there in one molecule of glucose. |
3
6
9
12
|
2 |
How many atoms are present in one molecule of helium. |
1
2
3
4
|
3 |
How many hydrgen atos are present in 1 molecule of ammonia. |
1
2
3
4
|
4 |
Choose an atom which can-exist idenpendently at room temperature. |
Na
O
Ne
Cu
|
5 |
Which one of the following is a metalloid element. |
Gold
Boron
Silver
Nitrogen
|
6 |
Which one of the following is a non metallic element. |
Oxygen
Aluminium
Iron
Beryllium
|
7 |
Which one of the following is metallic element. |
Hydrogen
Helium
Lithium
Carbon
|
8 |
In severe winter, the droplets of water in the atmosphere are frozens called. |
dew
fog
Frost
None of these
|
9 |
The rate of diffusion depends on. |
Size of the particles
Temperature
Size of space between particles
All of the above
|
10 |
Diffusion takes place in |
Liquids
gases
Both a and b
Solids
|