NSO Level 1- Science Olympiad (SOF) Class 8: Questions 629 - 634 of 1175
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Question 629
Question
MCQ▾Find the odd one out from the given animals.
Choices
| Choice (4) | Response | |
|---|---|---|
a. | Bat | |
b. | Kiwi | |
c. | Penguin | |
d. | Ostrich | |
Question 630
Question
MCQ▾Ovoviviparous are animals which produce fully developed eggs but the eggs hatch within the female՚s body. In this animal the eggs hatch within the male՚s body and the male give birth to young ones. Identify the animal.
Choices
| Choice (4) | Response | |
|---|---|---|
a. | Sea urchin | |
b. | Viper | |
c. | Sea horse | |
d. | Bat | |
Question 631
Question
MCQ▾The inner surface of iron kadai and frying pan are coated with zinc. The reason is
Choices
| Choice (4) | Response | |
|---|---|---|
a. | Iron reacts with air and moisture to form rust | |
b. | Zinc acts as a protective cover to prevent the contact between iron and atmosphere | |
c. | Zinc reacts with oxygen to form zinc oxide. | |
d. | Both a. and b. are correct | |
Question 632
Question
MCQ▾The ignition temperature of an inflammable substance would be
Choices
| Choice (4) | Response | |
|---|---|---|
a. | Medium | |
b. | Low | |
c. | Less than zero | |
d. | High | |
Question 633
Question
MCQ▾A metal which is not malleable is
Choices
| Choice (4) | Response | |
|---|---|---|
a. | Platinum | |
b. | Copper | |
c. | Arsenic | |
d. | Aluminium | |
Question 634
Question
MCQ▾Sodium is stored in kerosene. The reason is
Choices
| Choice (4) | Response | |
|---|---|---|
a. | Ignition temperature of sodium is lower than room temperature | |
b. | It undergoes spontaneous combustion in room temperature | |
c. | It reacts vigorously with water. | |
d. | All a., b. and c. are correct | |