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2. Which of the following is not a redox reaction? (a) CuO + H2 → Cu + H2O (b) Na + H2O → NaOH + H, (c) CaCO3 → CaO + CO2 (d) 2K+F2 → 2KF

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Similar Questions
Q1
Which of the following is not an example of redox rection ? (1) CuO + H2 → Cu + H2O (2) Fe2O3 + 3CO → 2Fe + 3CO2 (3) 2K + F2 → 2KF (4) BaCl2 + H2SO4 → BaSO4 + 2HCl
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Q2
Which of the following reactions is a decomposition reaction?
(a) CaCO3 ⟶CaO + CO2
(b) AgNO3 + NaCl ⟶ AgCl + NaNO3
(c) CuO + 2HCl ⟶ CuCl2 + H2O
(d) C + O2 ⟶ CO2
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Q3

which of the following is a redox reaction -

a) CaCO3 - CaO + CO2

b) H2 + Cl2 - 2HCl

c) CaO + 2HCl - CaCl2 + H2O

d) NaOH + HCl - NaCl + H2O

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Q4

Que 2: Rewrite the following reaction by correcting and then balancing



( a) KClO3
heat-----> KCl2 + O2

( b) Ca + O--------> CaO


( c) NH3 + CuO--------->Cu + N + H2O


( d) Pb + CuCl2
--------->PbCl


( e) CO2 + CaOH
--------->CaCO3 + H2O

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Q5
Balance the following equations:

(a) CH4 + O2 → CO2 + H2O
(b) Na2O + H2O → NaOH
(c) Ca(OH)2 + HCI → CaCI2 + H2O
(d) Na + H2o → NaOH + H2
(e) Na + CI2 → NaCI
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