MCQ
Which of the following becomes paramagnetic on heating?
- AMnO
- BFe3O4
- CZnFe2O4
- DB and C both
Explanation:
Ferrimagnetic change their nature on heating and become paramagnetic
eg. Fe3O4,ZnFe2O4, MgFe2O4
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| List $I$ (Substances) | List $II$ (Processes |
| $(A)$ Sulphuric acid | $(i)$ Haber's process |
| $(B)$ Steel | $(ii)$ Bessemer's process |
| $(C)$ Sodium hydroxide | $(iii)$ Leblanc process |
| $(D)$ Ammonia | $(iv)$ Contact process |
Reason : Oxygen forms $p\pi \,-\, p\pi $ multiple bond due to small size and small bond length but $p\pi \,-\,p\pi $ bonding is not possible in sulphur.
Glucose, Mannose, Galactose, $\alpha -$ Glucose, $\beta -$ Glucose
$(K)\,\, (L)\,\, (M)\,\, (N)\,\, (O)$
Correct set of epimer and anomer is respectivley
Epimer - Anomer
