please answer this also

Solution 
The solutions to your 1st query i.e., question IV has been provided below:
1. Ice, steam, water all are different forms of water, but naphthalene is the odd one out.
2. Nitrogen, chlorine, oxygen are gases, but water is a liquid.
3. Bunsen burner, spirit lamp, flame all have flames and are used for heating purposes, but glass rod is different.
4.Burette, graduated cylinder, flask all are apparatus, whereas a spirit lamp is used for heating purposes.
5. Chemistry is liked with chemicals and composition of compounds, whereas physics is different.
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