Question

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​

Answer 1

Explanation:

6)a-acidic oxide

7)c-colourless

8)a-yellow

9)b-purple

10)b-OH-