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D and F Block Elements question

2021 · Q99
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D and F Block Elements question

2021 · Q99

NEETChemistryD and F Block ElementsMCQ+4 / −1
Which of the following reactions is the metal displacement reaction? Choose the right option.
  1. A
    2Pb(NO3)2→2PbO+4NO2+O2↑2Pb{(N{O_3})_2} \to 2PbO + 4N{O_2} + {O_2} \uparrow2Pb(NO3​)2​→2PbO+4NO2​+O2​↑
  2. B
    2KClO3→Δ2KCl+3O22KCl{O_3}\xrightarrow{\Delta} 2KCl + 3{O_2}2KClO3​Δ​2KCl+3O2​
  3. C
    Cr2O3+2Al→ΔAl2O3+2CrC{r_2}{O_3} + 2Al\xrightarrow{\Delta} A{l_2}{O_3} + 2CrCr2​O3​+2AlΔ​Al2​O3​+2Cr
  4. D
    Fe+2HCl→FeCl2+H2↑Fe + 2HCl \to FeC{l_2} + {H_2} \uparrowFe+2HCl→FeCl2​+H2​↑
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