MCQ
When a lead storage battery is discharged
- A$SO_2$is evolved
- BLead sulphate is consumed
- CLead is formed
- ✓Sulphuric acid is consumed
$Pb + Pb{O_2} + 2{H_2}S{O_4}$ $\underset{{\operatorname{Re} ch\arg e}}{\overset{{Disch\arg e}}{\longleftrightarrow}}$ $2PbS{O_4} + 2{H_2}O$
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Spin only magnetic moment of $Fe$ in $\left[ Fe \left( H _2 O \right)_6\right]^{3+}$ and $\left[ Fe ( CN )_6\right]^{3-}$ complexes respectively is:
Atomic no. : $Mn = 25,\,Fe = 26,\,Co = 27,\,Ni = 28$
Pair $-\,A:$ $(1) \,2 - $ Chloropropane $(2) \,2-$ Bromopropane
Pair $-\,B:$ $(3) \,1 -$ Bromobutane $(4)\, 2-$ Bromobutane