1. 1. Substance which gives H+
ion into water is called...
a. acid b. base c.salt d. oxide
2. Which one of the following is a weak acid?
a. CH3COOH
b. HI
c. H2SO4
d. HNO3
3. Which one of the following is wrong for acids?
a. They conduct electricity
b. They have sour taste
c. They give OH-
ion in water
d. They change the color of litmus paper to red
4. properties of acids:
Sour, generally reactive with metals, ability to change colors in indicators.
which ones of these compounds belongs to acid compound?
a. lemon juice, vinegar, hand soap
b. apple juice, toothpaste, baking soda
c. vinegar, HCl, orange juice
d. caustic soda , baking soda, shower gel
5. Which of the following is wrong?
a. Li(OH)2 : Lithium hydroxide
b. H3 PO3 :Phosphorous acid
c. Mg(OH)2:Magnesium hydroxide
d. HF :Hydrofluoric acid
6. Below is a listing of some common items and their approximate pH values.
Which of the following items would turn red litmus paper blue?
a. pure water b. grapes c. milk d. ammonia
7. Which one the following products is not a cleanser?
a. Detergent
b. Soap
c. Kerosene
d. Toothpaste
SMP
9
1st
SEMESTER OF ACADEMIC YEAR 2014-2015
CHEMISTRY 1st
MID TERM EXAM
2. 8. These are components in detergent, except…
a. surfactant
b. oxidant
c. perfume
d. fluoride
9. We can reduce the negative effect of excessive use of chemical by doing one of these ways, except,,,,
a. Use chemicals in appropriate amount according to our need.
b. Use chemicals that is degradable so it will not pollute the environment
c. Do not pay attention to safety standards while using chemicals
d. Recycling the products that contain chemicals
10. DDT is a/an…..
a. bleacher
b. cleaner
c. insecticide
d. detergent
3. Note :
Questions Distribution :
Acid and Bases:
- Acids and bases : Introduction of Acids and Bases : 8
- Acids and Bases in our daily life : 5
- Naming Acids and Bases : 2
- Strong and Weak Acids: Neutralization reaction : 4
- Artificial Indicators : 4
Chemical Around us
- A classifying household, chemicals, and cleaners : 3
- Bleches and Insectic : 1
- The effect of Chemical and its prevention : 3
Total Question : 20
