6. A solid element is a non-metal, it can form [ ]
a) An acidic oxide
b) A basic oxide
c) A salt
d) A metallic salt
7. The colour of phenolphthlein in acidic medium is [ ]
a) Red
b) Yellow
c) Colourless
d) Pink
8. The colour of methyl orange in basic medium is [ ]
a) Yellow
b) Red
c) Pink
d)Colourless
9. In neutral solutions litmus colour is [ ]
a) Red
b) Purple
c) Yellow
d)Green
10. On dissolving bases in water produces ______ ions.[ ]
a) H+ b) OH–c) H3O+ d) None
Answers
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Explanation:
6)a-acidic oxide
7)c-colourless
8)a-yellow
9)b-purple
10)b-OH-
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