Metals and Non-Metals — Science STD 10 — Question

What is buck minster fullerene? How is it related to diamond and graphite?

A salt X when dissolved in distilled water gives a clear solution which turns red litmus blue. Explain the phenomenon.

Give reasons: Sodium, potassium and lithium are stored under oil.

An element X of atomic number 12 combines with an element Y of atomic number 17 to form a compound XY₂. State the nature of chemical bond in XY₂ and show how the electron configurations of X and Y change in the formation of this compound.

What is a neutralisation reaction? Give two examples.

Name the functional groups present in the following compounds:

1. CH₃CHO
   
2. CH₃CH₂COOH
   
3. CH₃COCH₃
   
4. CH₃CH₂CH₂OH
   

P and Q are aqueous solutions of sodium chloride and sodium hydroxide, respectively. Which of these will turn:

1. Blue litmus red?
2. Red litmus blue?

Name the functional groups present in the following compounds:

1. CH₃COOH
2. CH₃CH₂CHO
3. C₂H₅OH
4. CH₃COCH₂CH₃

What happens when zinc granules are heated with sodium hydroxide solution?
Write equation of the reaction which takes place.

Identify the substances that are oxidised and the substances that are reduced in the following reactions.

1. 4Na(s) + O₂(g) → 2Na₂O(s)
2. CuO(s) + H₂(g) → Cu(s) + H₂O(l)