Correct Answer - Option 1 : Oil varnish
Explanation:
Varnish: It is nearly homogenous solution of resin in oil, alcohol or turpentine.
Type of varnish:
Oil varnish:
- It uses linseed oil and takes about 24 hours to dry.
- Hard resins such as amber, copal etc are used which makes this type of varnish most durable.
- It is suitable for interior and exterior surfaces.
Spirit varnish:
- It uses resin of soft variety such as lac or shellac and dissolved in spirit.
- It made from spirit and wax and dries very quickly
- These are not durable and very easily affected by weathering action.
Water varnish:
- In it shellac resin is used with either ammonia, borax, soda is added.
- These are used for varnishing maps and pictures.
Other varnishes are flat varnish, spar varnish, asphalt varnish etc.
