Advertisements
Advertisements
प्रश्न
Fill in the blank
_________ refers to the number of atoms in the molecule of an element
Advertisements
उत्तर
Atomicity refers to the number of atoms in the molecule of an element
APPEARS IN
संबंधित प्रश्न
Write true or false
A heterogeneous mixture has a uniform composition throughout the mixture
Match the columns.
| column A | column B |
|
1. to separate grain from chaff |
a. filtration |
| 2. to saparate sawdust from water | b. sedimentation and deeantation |
| 3. to separate iodine from sodium chloride | c. winnowing |
| 4. to separate iron fillings from sand | d.sublimation |
|
5. it is used to separate sand and water |
e maganetic separation |
|
|
f .handpicking |
Write the Chemical Name of the Following and Also Give Their Molecular Formulae:
Marble
Give two examples of the following.
Non-metals which are lustrous
Define: Molecule
Draw a labelled diagram of an atom including its nucleus, orbits & their contents.
Give a reason for the following statement :
The filter paper made into a cone & placed in a funnel for filtering out the solid particles in a solid-liquid mixture should be moistened before placing it.
Elements are made up of______ kinds of atoms.
State true of false. If false, give the correct statement.
Two different elements may have similar atoms.
Classify the following as metals, non-metals and metalloids.
Sodium, Bismuth, Silver, Nitrogen, Silicon, Carbon, Chlorine, Iron, Copper
