Question

Change the voices of the verbs in the following sentences :
EXAMPLE : We must write to him.
He must be written to by us.
(Active)
(Passive)
1. We refused tº em admission.
2. The principal promised us a holiday.
3. They kept us waiting.
4. We elected Kapil Dev captain.
5. Mr Sinha teaches us grammar.
11. The king punished the thief.
12. They gave him a book.
13. The boys were playing football.
14.
Do not leave waste paper on the
grass.
15. The President appointed him
governor
16. When will you pay your fees?
17. The policeman caught him asleep.
18. We will raise many objections.
19. He promised me a present.
20. Did your uncle pay your college
fees ?
6. We must listen to his words.
7. We expected good news.
8. Who wrote this letter to her ?
9. Give a paisa to the beggar.
10. Animals do not possess hands.

please answer me fast​

Answer 1

Samples of simulated lake water are exposed to SO2(g). Two graduated cylinders containing samples of simulated lake water had CaCO3(s) added, and dissolves to form Ca2+ ions and CO32- ions. The chemical reaction of water exposed to SO2(g) is:

H2O(l) + S02(g) --> H2S04(aq) (sulphuric acid) , producing Hydronium ions in solution.

Hydronium ions react with the CO32- ions which then produces,

options:

HCO3-(aq) (weak acid)

H2CO3(aq) (weak acid)

HCO3-(aq) (strong acid)

H2CO3(aq) (strong acid)