Match the following
List I | List II | ||
---|---|---|---|
A. | Gorgonia | i. | Marine leech |
B. | Pontobdella | ii. | Sea Urchin |
C. | Balanus | iii. | Sea Fan |
D. | Echinus | iv. | Rock barnacle |
Solution:
The task is to match each element in List I with the correct element in List II by understanding the characteristics of each species.
Based on these associations, the correct matches are:
Which sol is used as an intramuscular injection?
The reactions which occur in blast furnace at 500 – 800 K during extraction of iron from haematite are
i. \(3Fe_2O_3 + CO \rightarrow 2Fe_3O_4 + CO_2\)
ii. \(Fe_2O_3 + 3C \rightarrow 2Fe + 3CO\)
iii. \(FeO + 4CO \rightarrow 3Fe + 4CO_2\)
iv. \(FeO + CO \rightarrow 2FeO + CO_2\)
Which of the following reactions give phosphine?
i. Reaction of calcium phosphide with water
ii. Heating white phosphorus with concentrated NaOH solution in an inert atmosphere
iii. Heating red phosphorus with alkali