Day 340: MHT-CET Chemistry

1. A.
   $\mathrm{Na_3[AlF_6]}$
2. B.
   $\mathrm{Na[AlF_6]}$
3. C.
   $\mathrm{Na_2[AlF_6]^{2+}}$
4. D.
   $\mathrm{[Al(NaF)_6]^{2+}}$

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1. A.
   $\text{PbSO}_4(s) + 2e^- \to \text{Pb}(s) + \text{SO}_4^{2-}(aq)$
2. B.
   $\text{Pb}(s) + \text{SO}_4^{2-}(aq) \to \text{PbSO}_4(s) + 2e^-$
3. C.
   $\text{PbO}_2(s) + 4\text{H}^+(aq) + \text{SO}_4^{2-}(aq) + 2e^- \to \text{PbSO}_4(s) + 2\text{H}_2\text{O}(l)$
4. D.
   $\text{PbSO}_4(s) + 2\text{H}_2\text{O}(l) \to \text{PbO}_2(s) + 4\text{H}^+(aq) + \text{SO}_4^{2-}(aq) + 2e^-$

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1. A.
   +2 to +3
2. B.
   -2 to +3
3. C.
   +7 to +3
4. D.
   +6 to +3

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1. A.
   137 u
2. B.
   274 u
3. C.
   167 u
4. D.
   254 u

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1. A.
   Furan – S
2. B.
   Pyrrole – N
3. C.
   Thiophene – O
4. D.
   Piperidine – S

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