Atomic number of $$\mathrm{Mn}, \mathrm{Fe}$$ and $$\mathrm{Co}$$ are 25, 26 and 27 respectively. Which of the following inner orbital octahedral complex ions are diamagnetic?
I. $$\left[\mathrm{CO}\left(\mathrm{NH}_3\right)_6\right]^{3+}$$
II. $$\left[\mathrm{Mn}(\mathrm{CN})_6\right]^{3-}$$
III. $$\left[\mathrm{Fe}(\mathrm{CN})_6\right]^{4-}$$
IV. $$\left[\mathrm{Fe}(\mathrm{CN})_6\right]^{3-}$$
Choose the correct option.
Arrhenius equation may not be represented as
Match the Column I with Column II.
Column I (Aqueous solutions) |
Column II (Elevation in boiling point) |
||
---|---|---|---|
A. | $$\mathrm{0.0001~M~NaCl}$$ | I. | 0.02 |
B. | $$\mathrm{0.0001~M~Urea}$$ | II. | 0.003 |
C. | $$\mathrm{0.001~M~MgCl_2}$$ | III. | 0.0001 |
D. | $$\mathrm{0.01~M~NaCl}$$ | IV. | 0.0002 |
Mark the correct option
Choose the wrong statements.
I. $$\mathrm{CO}_2$$ is responsible for greenhouse effect.
II. Acid rain contains mainly $$\mathrm{HNO}_3$$.
III. NO is more harmful than $$\mathrm{NO}_2$$.
IV. $$\mathrm{CO}_2$$ can absorb infrared.
Mark the correct option