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- (A) Free available chlorine
- (B) Residual chlorine
- (C) Combined available chlorine
- (D) Free chlorine
Correct Option is: B
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Lustre of the metals is because of?
- (A) High density due to closed packing of atoms.
- (B) High polish.
- (C) Reflection of light due to the presence of free electrons.
- (D) Absorption of light due to the presence of cavities.
Correct Option is: C