MCQ
$H_4P_4O_{12}$ and $H_3P_3O_9$ have same
- ANumber of $P—O—P$ bonds
- BNumber of $P—O—H$ bonds
- CNumber of $P=O$ bonds
- ✓None of these
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$A + O_2 \to B$
$B + O_2+ H_2O \to C$
$A,\, B$ and $C$ are
|
List - $I$ Compound |
List - $II$ Use |
| $(A)$ Carbon tetrachloride | $(I)$ Paint remover |
| $(B)$ Methylene chloride | $(II)$ Refrigerators and air conditioners |
| $(C)$ DDT | $(III)$ Fire extinguisher |
| $(D)$ Freons | $(IV)$ Non Biodegradable insecticide |
Choose the correct answer from the options given below: