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Identify the correct statements from the following.(A) In Photosynthesis reaction, Water is Oxidised to Oxygen.(B) An example for interstitial hydride Is MgH2.(C) Sodium hexametaphosphate is used In the removal of permanent hardness of water.

Question

Identify the correct statements from the following.(A) In Photosynthesis reaction, Water is Oxidised to Oxygen.(B) An example for interstitial hydride Is MgH2.(C) Sodium hexametaphosphate is used In the removal of permanent hardness of water.

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Solution

(A) Correct - In photosynthesis, water (H2O) is oxidized to oxygen (O2). This process involves the removal of electrons from water.

(B) Incorrect - MgH2 (Magnesium hydride) is not an example of an interstitial hydride. Interstitial hydrides are formed with transition metals, which have interstitial spaces in their lattice where hydrogen atoms can fit. Magnesium is an alkaline earth metal, not a transition metal.

(C) Correct - Sodium hexametaphosphate is indeed used in the removal of permanent hardness of water. It acts as a sequestering agent, binding the calcium and magnesium ions that cause water hardness.

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