Question

19h
6. When an ant stings a person, it causes a burning pain. Which of the following should be rubbed on the
sting area of skin to get relief 7
(a) lemon juice
(b) baking soda solution
(c) vinegar solution
65. The substance which can turn blue litmus to red is:
d) formle acid solution
(a) baking soda
(b) milk of magnesia
(c) lemon juice
() calamine solution
66. A yellow stain of turmeric containing curry on a white shirt turns red when soap solution is scrubbed on
it. This shows that soap solution is:
(a) basic
(b) acidie
(c) neutral
d) sour
67. A certain solution does not change the colour of any indicator. This solution is most likely to be
(2) vinegar solution
(b) baking soda solution
(c) common salt solution
(d) washing soda solution
. Which of the following does not cause acid rain ?
(a) sulphur dioxide
(b) carbon monoxide
(c) carbon dioxide
(d) nitrogen dioxide
29. Which of the following is a mineral acid ?
(4) citric acid (b) acetic acid (c) carbonic acid
(d) oxalic acid
0. Which indicator will produce a pink colour on adding a few drops of sodium hydroxide solution?
(a) blue litmus (b) phenolphthalein (c) turmeric paper (d) china rose indicator​

Answer 1

Answer:

1 : lemon juice

2:formale acid solution

3:basic

4: salt solution

5carbon monoxide

6:oxalic acid

7:phenolphthalein