The word “alkali” is derived from which of the following language?
a) Greek
b) Arabic
c) Persian
d) French
The word “alkali” is derived from Arabic word “qali”. What does it mean?
a) water
b) mineral
c) ashes
d) rocks
The substances which produce hydroxyl ions in aqueous solution are called……
a) acids
b) sugars
c) alkalis
d) salts
Which of the following is/are alkali/s?
a)NaOH
b) KOH
c) Ca(OH)2
d) All of these
Alkalis that ionize completely in water are called…….
a) weak alkalis
b)strong alkalis
c) concentrated alkalis
d) dilute alkalis
Explanation:A strong alkali is completely (100%) ionised. An example of a strong alkali is sodium hydroxide. A strong alkali has a pH of 14. sodium hydroxide (in water)
Which of the following is/are strong alkali/s?
a)NaOH
b) KOH
c) Cu(OH)2
d) both a and b
