Question

The artist used natural techniques for preparing colours and several mediums for Gond art( change the voice)

Answer 1

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The artist used natural techniques for preparing colours and several mediums for Gond art. (change the voice)

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Natural techniques for preparing colours and several mediums for Gond art was used by the artist.

______________

~~~As you know In Past Indefinite The Structure Is - "Subject + Past form of verb+ object" In Passive Voice The Subject comes at last. And Object Comes First Therefore the Structure of is,

Object + Was / Were + Past participle form of Verb

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Active voice : We played football.

Passive voice: Football was played by us.

Answer 2

Answer:

Natural techniques for preparing colours and several mediums for Gond art was used by the artist.

As you know In Past Indefinite The Structure Is - "Subject + Past form of verb+ object" In Passive Voice The Subject comes at last. And Object Comes First Therefore the Structure of is,

Object + Was / Were + Past participle form of Verb

EXAMPLE

Active voice : We played football.

Passive voice: Football was played by us.

Explanation:

HOPE IT WORKS!!!