PUMPA - SMART LEARNING
எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்
Book Free DemoAnswer the following questions:
1. Balance the following reactions:
a. \(BaCl_2\) + \(H_2SO_4\) → \(BaSO_4\) + \(HCl\)
b. \(Ca(OH)_2\) + \(HNO_3\) → \(Ca(NO_3)_2\) + \(H_2O\)
c. \(Pb(NO_3)_2\) → \(PbO\) + \(NO_2\) + \(O_2\)
d. \(MnO_2\) + \(HCl\) → \(MnCl_2\) + \(Cl_2\) + \(H_2O\)
a. \(BaCl_2\) + \(H_2SO_4\) → \(BaSO_4\) + \(HCl\)
b. \(Ca(OH)_2\) + \(HNO_3\) → \(Ca(NO_3)_2\) + \(H_2O\)
c. \(Pb(NO_3)_2\) → \(PbO\) + \(NO_2\) + \(O_2\)
d. \(MnO_2\) + \(HCl\) → \(MnCl_2\) + \(Cl_2\) + \(H_2O\)
2. When the powder of common metal is heated in open china dish its colour turns black. However, when hydrogen is passed over the hot black substance so formed, it regains its original colour. Based on the above information answer the following questions:
a. What type of chemical reaction takes place in each of the two given steps?
b. Name the metal initially taken in powdered form. Write balanced equations for both the reactions.
a. What type of chemical reaction takes place in each of the two given steps?
b. Name the metal initially taken in powdered form. Write balanced equations for both the reactions.
3. Define combination reaction. Give one example of a combination reaction which is also exothermic.
Important!
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