Question

1.___________ (graphite/sulphur) is used in the powdered form as a lubricant

2.________(phosphorus/sodium) is used in making matchsticks and fireworks

3._________(rust/steel) alloy of iron used for making building materials, nails and screws

4._________(Aluminium/lead) is used in car batteries, pigment and paints

5.__________(Hydrogen/sulphur)
can be used as a non-polluting fuel

6.Liquid___________(oxygen/nitrogen) is used for refrigerating
cells for medical research

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Answer 1

Answer:

1. graphite

2. phosphorus

3. steel

4. lead

5. hydrogen

6. nitrogen

Answer 2

Answer:

1. Graphite
2. Phosphorus
3. Steel
4. Aluminium
5. Hydrogen
6. Nitrogen

Hope it will helpful to youu....