Advertisements
Advertisements
Question
Complete the statement given below by filling in the blanks with the correct words.
Atom contains ________ , with positively charged _____.
Advertisements
Solution
Atom contains nucleus , with positively charged protons
RELATED QUESTIONS
Fill in the blan
An ________ is a homogeneous mixture of two or more metals.
Give two examples of the following.
Non-metals which are solids
Answer the following question:
When iron is mixed with sulphur at room temperature, it does not form a compound. Why?
Give an example of two liquids that form heterogeneous mixtures.
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 |
The diagram represents fractional distillation for the separation of mixtures. Answer the following :

- Can two immiscible liquids be separated by this process?
- Separation of liquids by this process is based on which physical property?
- If methyl alcohol & water are to be separated, which liquid would remain in flask ‘X’ after condensation.
- Give a reason for the above answer.
- State the purpose of the fractionating column in the apparatus.
Elements : Combine to form compounds :: Compounds : ______.
Name the element which is used for making computer chips.
Give the chemical formula for cane sugar.
Name the element which is used in toothpaste to strengthen our teeth.
