NSO Level 1- Science Olympiad (SOF) Class 7: Questions 210 - 215 of 699
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Question 210
Question MCQ▾
Cashmere wool is obtained from which of the following animal?
Choices
Choice (4) | Response | |
---|---|---|
a. | Rabbit | |
b. | Sheep | |
c. | Camel. | |
d. | Goat |
Question 211
Question MCQ▾
Which of the following is the example of chemical change?
Choices
Choice (4) | Response | |
---|---|---|
a. | Crystallization | |
b. | Digestion | |
c. | Photosynthesis | |
d. | Both b. and c. are correct |
Question 212
Question MCQ▾
Which of the following is true for strong acid?
Choices
Choice (4) | Response | |
---|---|---|
a. | The acid ionizes completely in a solution. | |
b. | It accepts great number of H+ ions. | |
c. | The acid does not completely dissociate in a solution. | |
d. | None of the above |
Question 214
Question MCQ▾
How does the excessive use of chemical fertilizers in the agricultural fields affect the pH of soil?
Choices
Choice (4) | Response | |
---|---|---|
a. | Drops the pH in acidic range. | |
b. | pH is no effect (neutral) . | |
c. | Drops the pH in basic range. | |
d. | All of the above |
Question 215
Question MCQ▾
Which of the following indicates that a chemical change has occurred?
Choices
Choice (4) | Response | |
---|---|---|
a. | Production of heat. | |
b. | Evolution of gas. | |
c. | Generation of light. | |
d. | All a., b. and c. are correct |