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Rising butt hinges are provided with helical __________ joints.

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Rising butt hinges are provided with helical __________ joints.

(a) Nickel

(b) Gold

(c) Brass

(d) Barium

This question was addressed to me in homework.

The doubt is from Doors, Windows and Ventilators in chapter Doors, Windows and Ventilators of Construction & Building Materials

1 Answer

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Best answer
The correct choice is (a) Nickel

Best explanation: Rising butt hinges are provided with helical nickel joints. This raises the shutter by 10 mm on being opened. These types of hinges are used for doors of rooms having carpets. They are now replacing ordinary butt hinges.

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