Chemistry Class 10 Chapter 10 - Acids, Bases and Salts - 3

Chemistry Class 10 Chapter 10 - Acids, Bases and Salts - 3

1. Which one of the following is a base?

a) drain cleaner
b) all of these
c) baking powder
d) antacid tablets

2. When few drops of methyl orange is added to a solution, the yellow colour of this solution indicates pH?

a) > 4
b) 0
c) = 4
d) < 4

3. The reaction in which two water molecules produce ions is known as?

a) cross ionization
b) dehydration
c) hydrolysis
d) auto ionization

4. The pH of drain cleaner is?

a) 14
b) 13
c) 4
d) 5

5. A base turns red litmus?

a) no effect
b) red
c) blue
d) yellow

6. The ionization constant for water is?

a) Kw
b) Kf
c) Kc
d) Kr

7. Water molecules are?

a) highly non polar
b) slightly polar
c) highly polar
d) slightly non polar

8. Ca(OH)₂ is used in making?

a) all of these
b) mortar
c) cement
d) plasters

9. The color of the litmus paper used to determine the acidity or alkalinity of a solution is?

a) red and white
b) white and yellow
c) blue and white
d) blue and red

10. How many replaceable H-atoms are present in H₂CO₃? value="a" id="10aq" onClick="Touch(this,10,id,1,0)">a) 4
b) 5
c) 2
d) 3

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