Question

Multiple choice questions
A. Choose the correct option.

1. Which of the following are true about acids?

(i) Acids have a sour taste.
(ii) Acids turn red litmus blue.
(iii) Acids turn purple cabbage juice red.
(iv) Acids change the colour of turmeric
to red.

a) (i) and (ii)
b) (ii) and (iii)
c) (i) and (iii)
d) (iii) and (iv)

2) Vinegar is.....

a) neutral
b) acidic
c) basic
d) a salt

3. Lime juice.....

(i) turns red litmus to blue
(ii) has no effect on turmeric
(iii) turns purple cabbage juice to green
(iv) turns blue litmus to red

a) (i) and (ii)
b) (ii) and (iii)
c) (i) and (iii)
d) (ii) and (iv)

4. A base....

(i) has a bitter taste
(ii) turns red litmus blue
(iii) turns purple cabbage juice red
(iv) has no effect on turmeric

a) (i) and (ii)
b) (ii) and (ii)
c) (i) and (iii)
d) (ii) and (iv)

5. An acid does not cause any change in.....

(i) red litmus
(ii) blue litmus
(ii) turmeric
(iv) purple cabbage juice

a) (i) and (ii)
b) (i) and (iv)
c) (i) and (iii)
d) (iii) and (iv)

6. Purple cabbage solution becomes.....

(i)red in an acid
(ii) green in an acid
(iii) green in a base
(iv) red in a base

a) (i) and (ii)
b) (ii) and (iv)
c) (ii) and (iii)
d) (iii) and (iv)

7. Litmus paper turns.....

(i) blue in a base
(ii) blue in an acid
(iii) red in an acid
(iv) red in a base

a) (Ii) and (ii)
b) (II) and (iv)
c) (i) and (iii)
d) (iii) and (iv)

8. Baking soda turns....

a) turmeric red
b) purple cabbage juice green
c) red litmus blue
d) all of the above

9. A neutralisation reaction between a strong acid and a weak base forms...

a) an acidic salt
b) a basic salt
c) a neutral salt
d) table salt

10. To neutralise the acids in soil, farmers add.....

a) HCI
c) NaOH
b) Ca(OH),
d) Naci
​

Answer 1

Answer:

the answer of one is (c) 1 and 3