Q.1 Write the chemical reactions that are taking place
Q.2 (A) Based on the following reactions, arrange the metals involved in the following reactions in decreasing order of reactivity
Zn + CuSO4 --- ZnSO4 + Cu
Zn + FeSO4 --- ZnSO4 + Fe
Cu + 2AgNO3 --- Cu (NO3) 2 + 2Ag
Fe + CuSO4 --- FeSO4 + Cu
(B) What is the nature of the above reactions
Q.3 A green salt on heating gives suffocating smell, Identify the salt and write equation of the reaction
Q.4 A brown substance X on heating in the air forms a substance Y . When Hydrogen gas is passed over heated Y, it again changes back into X
Q.5 Name the gas formed when sodium hydroxide reacts with zinc.
Q.6 Write the chemical name of baking soda.
Q.7 What happens when gypsum is heated at 373K?
Q.8 Which has a higher pH value 1M HCI or 1M NaOH solution?
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Answer:
this is displacement reaction
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