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प्रश्न
Give two examples of the following :
Solid + Solid mixture
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उत्तर
Solid + Solid mixture: Sand and sugar,
- Sand and stone,
- sand and sugar.
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संबंधित प्रश्न
Write the names of following elements Na, C, Kr, U, Ra, Fe, Co.
Fill in the blank:
Symbolic expression for a molecule is called _____.
Give a reason why elements are tabulated in a table called the ‘Periodic table’.
Give the symbol and the number of atoms of the following elements present in water.
Match the formulas of the following gases with their correct names :
Gases - (a) H2 (b) N2 (c) O2 (d) Cl2 (e) HCI (f) NH3 (g) CO (h) CO2 (i) SO2 (j) NO (k) NO2.
Names:
(1) Ammonia (2) Nitrogen Dioxide (3) Oxygen (4) Hydrogen (5) Nitrogen (6) Chlorine (7) Carbon Monoxide (8) Sulphur Dioxide (9) Nitrogen Monoxide (10) Carbon Dioxide (11) Hydrogen Chloride
State the type of element for the following:
Chlorine
State the type of element for the following:
Antimony
State the valency of the following metallic element and write symbol with the valency
Chromium
Certain metal exhibit variable valencies which include valencies: 1+, 2+, 3+, and 4+.
State the variable valency of the following metal.
Silver
write symbol with the variable valency
The symbol of tungsten is _______.
