The reddish brown stains when clothes are washed with hard water is due to :

Limestone

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Calcium

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Ferrous ions

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All of the above

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Solution

The correct option is C Ferrous ions
If the hard water has ferrous irons (oxidized to the ferrous form) it may leave some reddish brown stains on your clothing after laundry, or on the bathroom enamel surfaces.

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Similar questions

Q. Assertion :Clothes are not washed properly in hard water. Reason: Hard water contains many minerals.

A white shirt has a yellow stain of curry. When soap is rubbed on this shirt during washing, the yellow stain turns reddish - brown. On rinsing the shirt with plenty of water, the reddish - brown stain turns yellow again.

(a) Name the natural indicator present in curry stain.

(b) Explain the changes in colour of this indicator which take place during washing and rinsing the shirt.

Q. A cloth stained in ______ will turn red when washed with _______.

Q. Assertion (A) : Clothes are not washed properly in hard water.
Reason (R) : Hard water contains many minerals.

Q. Why don’t stains erase when washed with water alone?

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The reddish brown stains when clothes are washed with hard water is due to :

The correct option is C Ferrous ionsIf the hard water has ferrous irons (oxidized to the ferrous form) it may leave some reddish brown stains on your clothing after laundry, or on the bathroom enamel surfaces.

The correct option is C Ferrous ions
If the hard water has ferrous irons (oxidized to the ferrous form) it may leave some reddish brown stains on your clothing after laundry, or on the bathroom enamel surfaces.