acid and alkali MC題問10點

1)When an acid is added to a carbonate, ______is given out.
2)After ______, the corrosive property of the original substances is lost.
3)_______and oxides of nitrogen are the pollutants that cause acid rain.
4)_______is a strong alkali. It has a very high pH value.
5)Acids are corrosive but alkalis are not.
A)ture B)false
6)Detergents turn red litmus solution blue.
A)ture B)false
7)A red solution is acidic.
A)ture B)false
8)The reaction between hydrochloric acid and calcium carbonate is called neutralization.
A)ture B)false
9)Neutralization is a reaction between an acid and an alkali.
A)ture B)false
10)Which of the following parts of our body produces acid?
A. StomachB. LungsC. MouthD. Eyes
14)Food preserved in vinegar is never sold in containers which are
A. made of plastic.B. made of metal.C. made of glass.D. vacuum.
16)Which of the following are methods of preserving food?
(1) Storing food in refrigerator
(2) Putting food in vinegar
(3) Drying food
(4) Soaking food in water
A. (1), (2) and (3) onlyB. (1), (2), (3) and (4)C. (1), (2) and (4) onlyD. (2), (3) and (4) only