Which of the following reaction gives nitrogen (II) oxides as one of the products?
Identify the correct pairs in which the chemical substance given is correctly matched its use
| Chemical substance | Use |
| A. |
Preparation of phosgene |
| B. |
Estimation of CO |
| C. |
Disinfectant |
Observe the following ions
$$ \mathrm{V}^{2+}, \mathrm{Zn}^{2+}, \mathrm{Cu}^{2+}, \mathrm{Fe}^{2+}, \mathrm{Fe}^{3+}, \mathrm{Ti}^{3+}, \mathrm{Sc}^{3+}, \mathrm{Ti}^{4+}, \mathrm{Ni}^{3+}, \mathrm{Co}^{3+}, \mathrm{Cu}^{+} $$
How many ions in the above list have zero magnetic moment?
Identify the correct set for $\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_6\right]^{3+}$ ion.
(Hybridisation of $\mathrm{Co}^{3+}$, type of complex, number of unpaired electrons in the complex ion respectively.)
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