Match the following columns:
Column-$I$ Column-$II$ $(A)$ Blue-green algae $(I)$ Spirogyra $(B)$ Unicellular algae $(II)$ Nostoc $(C)$ Filamentous algae $(III)$ Volvox $(D)$ Colonial algae $(IV)$ Chlamydomonas
| Column-$I$ | Column-$II$ |
| $(A)$ Blue-green algae | $(I)$ Spirogyra |
| $(B)$ Unicellular algae | $(II)$ Nostoc |
| $(C)$ Filamentous algae | $(III)$ Volvox |
| $(D)$ Colonial algae | $(IV)$ Chlamydomonas |
- A$(A-I), (B-II), (C-III), (D-IV)$
- B$(A-II), (B-IV), (C-I), (D-III)$
- C$(A-II), (B-IV), (C-III), (D-I)$
- D$(A-III), (B-II), (C-IV), (D-I)$
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Match List-$I$ with List-$II$ and select the correct answer using the codes given below:
List-$I$ List-$II$ $(1)$ Heavy water $(a)$ Bicarbonates of $Ca$ and $Mg$ in water $(2)$ Temporary hard water $(b)$ No foreign ions in water $(3)$ Soft water $(c)$ $D_2O$ $(4)$ Permanent hard water $(d)$ Sulphates and chlorides of $Ca$ and $Mg$ in water
| List-$I$ | List-$II$ |
|---|---|
| $(1)$ Heavy water | $(a)$ Bicarbonates of $Ca$ and $Mg$ in water |
| $(2)$ Temporary hard water | $(b)$ No foreign ions in water |
| $(3)$ Soft water | $(c)$ $D_2O$ |
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