Result:
1/10
1. What is the common taste characteristic of substances that turned pathimugam water yellow?
Sweet
Bitter
Sour
Salty
2/10
2. Which of the following can be used as an alternative to litmus paper according to the experiment?
Blueberry juice
Red hibiscus flower rubbed on paper
Spinach leaves
Onion juice
3/10
3. Which substance will turn blue litmus paper to red, indicating it is an acid?
Baking soda solution
Soap water
Lemon juice
Lime water
4/10
4. What color change would indicate a base when using red litmus paper?
No change
Red to yellow
Red to blue
Red to green
5/10
5. Which material is recommended for detecting the nature (acid or base) of a substance?
Measuring cylinder
Litmus paper
Thermometer
Funnel
6/10
6. What causes the sour taste in substances that turn blue litmus red?
Bases
Sugars
Acids
Salts
7/10
7. What is litmus made from?
Blueberries
Lichens
Hibiscus flowers
Tree bark
8/10
8. What is the purpose of a Science Kit in the classroom?
To store tools for students
To provide materials for science experiments
To keep students entertained
To organize books
9/10
9. What is the main use of red and blue litmus papers in experiments?
To measure temperature
To detect acids and bases
To weigh chemicals
To create a colorful experiment
10/10
10. Which of the following liquids is NOT listed as an acidic substance in the experiments?
Lemon juice
Vinegar
Clear baking soda solution
Tamarind water