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1. 2NO2(g) + 2OH-(aq) → NO2- (aq) + NO3-(aq) + H2O(I) is an example of
A. Metal displacement Reaction
B. Combination Reaction
C. Displacement Reaction
D. Disproportionation Reaction
2. Pick the odd one out
A. Combination redox reaction
B. Catalysis redox reaction
C. Displacement redox reaction
D. Decomposition redox reaction
3. A substance (atom, ion or molecule) which can readily accept electrons from other substances is called
A. Oxidising agent
B. Reducing agent
C. None of them
D. both a and b
4. Those reactions in which oxidation and reduction takes place simultaneously are known as
A. Redox reaction
B. Addition reaction
C. Chemical reaction
D. None of the above
5. Which of the following is disproportionation reaction?
A. CaCO3 (s) → CaO(s) + CO2(g)
B. C(s) + O2 (g) → CO2(g)
C. CuSO4(aq) + Zn (s) → Cu(s) + ZnSO4 (aq)
D. 4 KClO3 → 3KClO4 + KCl
6. According to classical idea of redox reactions the given example is of 2 Mg(s) + O2 (g) → 2 MgO(s)
A. Oxidation
B. Reduction
C. Redox reaction
D. All the above
7. In 2Na(s) + Cl2 → 2 NaCl (s) ; The oxidising agent is
A. Sodium
B. Chlorine
C. Sodium chloride
D. None of these
8. CuSO4 (aq) + Zn (s) → Cu (S) + ZnSO4 (aq) is an example of
A. Metal displacement reaction
B. Disproportionation reaction
C. Combination reaction
D. Non-metal displacement
9. Nitrous Acid acts as a:
A. Reducing agent
B. Oxidising agent
C. Oxidising as well as reducing agent
D. None of the above
10. The reaction 2Na(s) + 2H2O(I) → 2NaOH(aq) + H22(g) is
A. Displacement reaction
B. Combination reaction
C. Double displacement reaction
D. Decomposition reaction
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