What type of reactions are represented by the following equations?(i) CaCO₃ ------> CaO + CO₂(ii) CaO + H₂O ------> Ca(OH)₂(iii) 2FeSO₄ ------> Fe₂O₃ + SO₂ + SO₃(iv) NH₄Cl ------> NH₃ + HCl(v) 2Ca + O₂ ------> 2CaO

Academic Chemistry NCERT Class 10

(i) Decomposition reaction.

(ii) Combination reaction.

(iii) Decomposition reaction.

(iv) Decomposition reaction.

(v) Combination reaction.

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Updated on: 10-Oct-2022

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Balance the following equations:(i) Na + O2 ----> Na2O(ii) H2O2 ----> H2O + O2(iii) Mg(OH)2 + HCl ----> MgCl2 + H2O(iv) Fe + O2 ----> Fe2O3(v) Al(OH)3 ----> Al2O3 + H2O(vi) NH3 + CuO ----> Cu + N2 + H2O(vii) Al2(SO4)3 + NaOH ----> Al(OH)3 + Na2SO4(viii) HNO3 + Ca(OH)2 ----> Ca(NO3)2 + H2O(ix) NaOH + H2SO4 ----> Na2SO4 + H2O(x) BaCl2 + H2SO4 ----> BaSO4 + HCl
What type of reactions are represented by the following equations?(a) CaO + CO2 ----> CaCO3 (b) 2Na + 2H2O ----> 2NaOH + H2(c) Mg + CuSO4 ----> MgSO4 + Cu(d) NH4NO2 ----> N2 + 2H2O(e) CuSO4 + 2NaOH ----> Cu(OH)2 + Na2SO4
Complete and balance the following equations:(a) NaOH + _____ ------> Na2SO4 + H2O(b) Ca(OH)2 + _____ ------> CaCO3 + H2O
Draw the electron-dot structures of the following compounds and state the type of bonding in each case:(i) KCl (ii) NH3 (iii) CaO (iv) N2 (v) CaCl2
What is the balanced form of CaCO3 (s) -------> CaO (s) + CO2 (g).
2FeSO4 $\rightarrow$ Fe2O3 + SO2 + _____
Draw the electron-dot structures of the following compounds and state the type of bonding in each case:(i) CO2 (ii) MgO (iii) H2O (iv) HCl (v) MgCl2
Correct and balance the following equations:(i) Ca + H2O ------> CaOH + H (ii) N + H ------> NH3
What type of chemical reactions are represented by the following equations?(i) A + BC ----> AC + B(ii) A + B ----> C(iii) X ----> Y + Z(iv) PQ + RS ----> PS + RQ(v) A2O3 + 2B ----> B2O3 + 2A
Balance the following chemical equations :(a) HNO3 + Ca (OH)2 → Ca (NO3)2 + H2O(b) NaOH + H2SO4 → Na2SO4 + H2O(c) NaCl + AgNO3 → AgCl + NaNO3(d) BaCl2 + H2SO4 → BaSO4 + HCl
Which of the following is not an endothermic reaction?(a) CaCO3 -----> CaO + CO2(b) 2H2O ------> 2H2 + O2(c) 6CO2 + 6H2O -----> C612O6 + 6O2(d) C6H12O6 + 6O2 -----> 6CO2 + 6H2O
Classify the following into elements and compounds :(i) H2O(ii) He(iii) Cl2(iv) CO(v) Co
Balance the following equations:1. Mg + H2SO4 --------> MgSO4 + H22. CaCO3 + HCl --------> CaCl2 + H2O + CO23. Ag + HNO3 --------> AgNO3 + H2O + NO2
How to balance the chemical equation- Fe + O2 + H2O = Fe2O3.H2O
2HNO3 + Ca(OH)2 → Ca(NO3)2 + 2H2O; is an example of(i) displacement reaction(ii) double displacement reaction(iii) neutralisation reaction(iv) combination reaction.

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