mcq 7

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Here are 10 MCQ questions based on the provided image, with answers.
1. उदासीनीकरण (Neutralization) is a reaction where:
a) An acid turns blue litmus red and a base turns red litmus blue.
b) An acid and a base react to form salt and water.
c) A substance changes color when exposed to light.
d) A liquid evaporates into a gas.
Answer

2. Which of the following is NOT a property of an acid mentioned in the text?
a) Turns blue litmus red.
b) Has a sour taste.
c) Is corrosive.
d) Turns red litmus blue.
Answer:

3. Indicators are substances that:
a) React with acids to form hydrogen gas.
b) Change color to show the presence of an acidic, basic, or neutral substance.
c) Are used to clean laboratory equipment.
d) Are always red in acidic solutions.
Answer

4. According to the text, a "natural indicator" can be prepared from:
a) Salt and water.
b) Turmeric, China rose petals, and red cabbage.
c) Only synthetic chemicals.
d) Any colored liquid.
Answer

5. What is the color of turmeric in a basic solution?
a) Yellow
b) Red
c) Blue
d) Green
Answer

6. If a solution does not change the color of blue or red litmus paper, it is likely:
a) Acidic
b) Basic
c) Neutral
d) Highly corrosive
Answer

7. Kriyaakalap (Activity) 4.5 suggests observing the effect of indicators on various substances. Which of the following is listed as one of the substances to be tested?
a) Water
b) Salt solution
c) Hydrochloric acid
d) Sugar solution
Answer:

8. The statement "If you don't know the cause of unknown poisoning, you don't know the cure" emphasizes the importance of:
a) Relying on traditional remedies.
b) Identifying the nature of a substance for treatment.
c) Avoiding all chemical experiments.
d) Only using natural indicators.
Answer:

9. In the context of the experiment described, what would happen if a base was added to a solution containing a turmeric indicator?
a) The solution would turn yellow.
b) The solution would turn red.
c) The solution would turn blue.
d) There would be no color change.
Answer:

10. What is the role of the teacher/educator in Kriyaakalap 4.4?
a) To provide all the answers.
b) To prepare the natural indicators for the students.
c) To guide the students in identifying and preparing natural indicators from their surroundings.
d) To perform the entire experiment themselves.
Answer: 

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