Advertisements
Advertisements
प्रश्न
Write the Chemical Name of the Following and Also Give Their Molecular Formulae:
Sand
Advertisements
उत्तर
Silicon dioxide (Sand) — SiO2
APPEARS IN
संबंधित प्रश्न
Differentiate between the following.
Filter Paper and Alum
Give reason: A frying pan is made up of steel but its handle is made up of wood.
Fill in the blank
A diatomic gaseous element is _______.
The important physical properties of substances are colour, odour, nature, density & solubility in water.
Name – a gas with a pungent, choking odour which is lighter than air
Who are my companions?
| Group 'A' | Group 'B' |
| 1. Stainless steel | (a) Non-metal |
| 2. Silver | (b) compound |
| 3. Bhajani mixture for milling | (c) Mixture |
| 4. Salt | (d) Element |
| 5. Coal | (e) Alloy |
| 6. Hydrogen | (f) Metal |
Write the names of elements from the following symbol:
Xe
‘An atom is the basic unit of an element’. Draw a diagram of an atom – divisible as seen today.
Give three differences between elements & compounds with relevant examples.
State why brass is considered as a homogenous mixture while a mixture of iron & sulphur – heterogenous.
Name the process associated with the following
A fine beam of light entering through a small hole in a dark room illuminates the particles in its paths.
