About 70% of our body’s iron is found in red blood cells of our blood called haemoglobin and in muscle cells called myoglobin.
Question
Do you think iron is present in our body? If yes, where?
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Fill in the blanks to complete the following paragraph. The name of the product formed in the reaction of sulphur and ___________ is sulphur dioxide gas. When sulphur dioxide is dissolved in ___________, sulphurous acid is formed. The sulphurous acid turns ___________ litmus paper to ___________. Generally oxides of ___________ are acidic in nature. After completing the paragraph write two questions which you can raise on the basis of this information.
Open Answer »Some of the following statements are incorrect. Find the incorrect statements and correct them. [NCERT Exemplar] a. The property of metals by virtue of which they can be drawn into wires is called ductility. b. Metals are good conductors of electricity but poor conductors of heat. c. Articles made of metals produce ringing sound when struck hard. d. Oxides of non-metals and metals are acidic in nature. e. A less reactive metal replaces a more reactive metal from its salt solution in water.
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(i) ____________ is a metal. (ii) Metals are good ____________ of electricity.