1.What are the uses of thefollowing bases?
a.NaOH/KOH c. Ca(OH)2
b .NaHCO3 d. Mg(OH)2
2.What is a neutralization reaction?Give an example.
3.A person is having burning sensation in his stomach. What kindof medicine doctor will suggest and why
4.Mansi was preparing a cake.Her son came and ate some baking soda. Will it taste sweet, sour or bitter? Why?
5.Sejalwas playing with some China rose flowers. She kept petals in warm water for some time and was very happy to see the colour of water changing to red. Suddenly a bit of colored water fell into the lime juice kept near it. The colour of lime juice changed to dark pink. What could be the reason behind this?
6.Poojais suffering from indigestion due to acidity. Is itadvisable to give her orange juice in this situation and why?
7.While playing in a park, a child was stung by a wasp. Someelders suggested applying paste of baking soda and otherslemon juice as remedy. Which remedy do you think isappropriate and why?
8.You are provided with three test tubes A, B and C as shown inFigure with different liquids. What will you observe whenyou put
a)apiece of blue litmus paper in each test tube
.b)a piece of red litmus paper in each test tube.
c)a few drops of phenolphthalein solution to each test tube.
a=solution of tartaric acid
b=soapsolution
c= purewater
9.Givedifference between acid and base
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a)Blue litmus turns into red in Solution A
Remains same in both B and C solutions
b)Red litmus turns into blue in sloution B
Remains same in A and C solutions
c) A solution = colourless
B solution = pink colour
C solution = colourless
9]
Acids : The substances which dissociate H+ ions in the prescence of water are called ACIDS
Bases : The substances which dissociate OH- ions in the prescence of water are called BASES
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