NSO Level 1- Science Olympiad (SOF) Class 9: Questions 283 - 287 of 1128
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Question 283
Question
MCQ▾Which of these animal husbandries need low investment?
Choices
| Choice (4) | Response | |
|---|---|---|
a. | Fish farming | |
b. | Poultry farming | |
c. | Cattle farming | |
d. | Bee-keeping | |
Question 284
Question
MCQ▾Which of the following statements is true about isotopes?
Choices
| Choice (4) | Response | |
|---|---|---|
a. | Chemical properties of isotopes of an element are similar but their physical properties are different. | |
b. | Many elements consists of a mixture of isotopes | |
c. | Atomic number of isotopes is same but mass numbers are different | |
d. | All a., b. and c. are correct | |
Question 285
Question
MCQ▾Weeds affect the crops plants by
Choices
| Choice (4) | Response | |
|---|---|---|
a. | Killing of plants in field before they grow | |
b. | Competing for various resources of crops causing low availability of nutrients | |
c. | Dominating the plants to grow | |
d. | All a., b. and c. are correct | |
Question 286
Question 287
Question
MCQ▾Which of the following is not a part of an atom?
Choices
| Choice (4) | Response | |
|---|---|---|
a. | Proton | |
b. | Electron | |
c. | Neon | |
d. | Neutron | |