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Answer 1

Answer:

Hey dude

Explanation:

Thr r 4 questions

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Answer 2

Explanation:

47. wood- opaque

glass- transparent

spectacles- transparent

brick - opaque

wax paper- translucent

48. Permanent and Electro Magnetic Separators are used to separate magnetically susceptible minerals. Examples include: Removing iron bearing minerals from silica sand used in the production of glass; Cleansing feldspar and clay used in the production of ceramics.

49. There are six types of freely movable joints:

joints:Ball and socket joint...

Hinge joint. ...

Hinge joint. ...Condyloid joint. ...

Hinge joint. ...Condyloid joint. ...Pivot joint. ...

Hinge joint. ...Condyloid joint. ...Pivot joint. ...Gliding joint. ...

Hinge joint. ...Condyloid joint. ...Pivot joint. ...Gliding joint. ...Saddle joint...