Acids, Bases and Salts-Natural Indicators Around Us [CBSE (Central Board of Secondary Education) Class-7 Science]: Questions 1 - 4 of 4
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Question 1
Question MCQ▾
If a cooked vegetable falls on the clothes or fabric it leaves a yellow stain on cloth. This yellow stain is due to the presence of:
Choices
Choice (4) | Response | |
---|---|---|
a. | Indicators | |
b. | Bases | |
c. | Acids | |
d. | Turmeric |
Question 2
Question MCQ▾
Which gases from the atmosphere combines with tiny droplets of water in clouds and leads to acid rain:
Choices
Choice (4) | Response | |
---|---|---|
a. | Nitrogen oxide & Sulphur dioxide | |
b. | Carbon dioxide | |
c. | Nitrogen oxide | |
d. | Sulphur dioxide |
Question 3
Question MCQ▾
Indicator is made using a hibiscus flower is:
Choices
Choice (4) | Response | |
---|---|---|
a. | Flower indicator | |
b. | China rose indicator | |
c. | Hibiscus indicator | |
d. | Question does not provide sufficient data or is vague |
Question 4
Question MCQ▾
Litmus is:
Choices
Choice (4) | Response | |
---|---|---|
a. | Indicator | |
b. | Extracted from lichens | |
c. | A natural dye | |
d. | All a., b. and c. are correct |