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सुरेश एक दृष्टिबाधित छात्र है वह किन-किन सूचकों का प्रयोग कर अम्ल एवं क्षार की पहचान कर सकता है? |
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Answer» the branch of SCIENCE CONCERNED with the substances of which MATTER is composed, the investigation of their PROPERTIES and reactions, and the use of such reactions to form new substances. |
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