1.Wasp sting can be treated with:
a) vinegar
b) washing soda
c) baking soda
d) milk of magnesia
2. Bee sting contains:
a) an alcohol
b) methanoic acid
c) acetic acid
d) citric acid
3. If the person gets relief by rubbing vinegar on the stung area then the person has been stung by:
a)ant
b)beetle leaf hair
c) wasp
d) honey bee
4. The acid produced in our stomach is:
a) sulphuric acid
b) nitric acid
c) methanoic acid
d) hydrochloric acid
5. The best medicine for in digestion is:
a) magnesium hydroxide
b) sodium hydroxide
c) manganese hydroxide
d) potassium hydroxide
6. If a solution turns red litmus blue then its pH is likely to be:
a)5
b)8
c)10
d)1
7. If a solution turns blue litmus red then its pH is likely to be:
a)5
b)8
c)10
d)1
8. If a solution turns phenolphthalein indicator pink then its pH is likely to be:
a)4
b)8
c)9
d)7
9. If the colour of methyl orange indicator in a solution turns yellow then its pH is likely to be:
a) less than 7
b) more than 7
c)0
d)7
10. The best medicine to treat in digestion is:
a) magnesium hydroxide
b) potassium hydroxide
c) manganese hydroxide
d) sodium hydroxide
11. When a wasp stings it injects :
a) an acidic liquid into the skin
b) an alkaline liquid into the skin
c) Methanoic acid into the skin
d) acetic acid into the skin
12. Strong bases react with active metals to produce the respective gas:
a) carbon dioxide gas
b) nitrogen gas
c) hydrogen gas
d) Oxygen gas
13. When a burning matchstick is brought near the hydrogen gas it burns with:
a) a popsound
b) a topsound
c) a musical sound
d) A harsh sound
14. Tooth decay starts if the pH of the mouth falls below:
a)8.0
b)7.0
c)5.5
d)3.5
15. Which of the following elements forms an acidic oxide:
a)Mg
b)Ma
c)P
d)Al
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