Question

Q.4 )Pick the odd one out give scientific reason for your answer.
1. Lithium, sodium , fluorine, magnesium
2. Hydrogen, chlorine , neon, silicon
3. Hydrochloric acid, sulfuric acid, sodium hydroxide , nitric oxide
4. Crushing a can, baking of cake, melting an ice cube, breaking a glass
5. Action with litmus , poisonous, tasteless , colourless

Answer 1

Answer:

1. Fluorine

Reason: Fluorine belongs to p-block whereas rest of the elements are s-block elements.

2. Silicon

Reason: Rest are gases whereas silicon isn't exist as gas.

3. NaOH.

Reason: Sodium hydroxide is a base wheras rest all are acidic in nature.

4. Baking a cake

Reason: It is a chemical change which is irreversible

Rest of the changes are physical in nature.

5. Not sufficient information

Explanation:

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Answer 2

Answer:

here is the answer

Explanation:

1-- fluorine

2-- silicon

3-- sodium hydroxide

4-- baking a cake

5-- Action with litmus