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Chip mark, diagonal grain, torn grain and wane are the defects in timber due to:
1. conversion
2. insects
3. natural forces
4. fungi

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Correct Answer - Option 1 : conversion

Defects due to conversion

1) chip mark

2) Diagonal grain

3) Torn grain

4) wane

Defects due to Insect

1) Marine Borers

2) Beetles

3) Termites

Defect due to Fungi

1) Blue Rot

2) Heart Rot

3) Dry Rot

4) Sap stain

5) Wet Rot

Defect due to seasoning

1) Bow

2) check

3) collapse

4) cup

5) Twist

6) Split

7) Warp

Defects due to natural forces

1) knots

2) Burb

3) Ring galls

4) Twisted fiber

5) shaker

6) Druxinees

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