Advertisements
Advertisements
प्रश्न
Name: the Hardest Naturally Occurring Substance
Advertisements
उत्तर
Diamond
APPEARS IN
संबंधित प्रश्न
Fill in the blank
Use of a ................. to separate the components of a mixture of solids is based on the difference in the size of the components
What are the different types of mixtures ?
State the number of atoms of each element, present in \[\ce{HNO3}\].
Also name the compound.
Tick (√) the correct alternative from the choice given for the following statement.
The most abundant elements in the universe are
Tick (√) the correct alternative from the choice given for the following statement
A gaseous non-metal.
Complete the statement – an element is a pure substance made up of ____________ atoms.
Complete the statement given below by filling in the blank with the correct word.
The basic unit of an element is an __________.
Write the names of elements from the following symbol:
Cu
Represent with the help of a simple chart how matter is classified into pure or impure substances & further into elements, compounds & mixtures, with elements further segmented.
Match the separation of components in List I with the most appropriate process in List II.
| List I | List II |
| 1. Naphthalene from naphthalene & sodium chloride. | A: Separating funnel |
| 2. Cream from milk. | B: Sublimation |
| 3. Kerosene oil from kerosene oil & water. | C: Boiling |
| 4. Lead nitrate from an aqueous solution of lead nitrate. | D: Centrifugation |
| 5. Ammonia from an aqueous solution of ammonia. | E: Distillation |
