MCQOPTIONS
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MCQOPTIONS
This section includes 760 Mcqs, each offering curated multiple-choice questions to sharpen your Grade9 knowledge and support exam preparation. Choose a topic below to get started.
| 751. |
Energy can be converted into some other forms but cannot be |
| A. | destroyed |
| B. | decrease |
| C. | increase |
| D. | transferred |
| Answer» B. decrease | |
| 752. |
A ship moves at a speed of 4 ms-1. Water resistance acting on it is 4000 N. The power of its engine is |
| A. | 20 kW |
| B. | 24 kW |
| C. | 11 kW |
| D. | 16 Kw |
| Answer» E. | |
| 753. |
To heat our houses and run industry and transport, we use coal, oil and gas which are termed as |
| A. | fusions |
| B. | fossil fuels |
| C. | chemicals |
| D. | molecules |
| Answer» C. chemicals | |
| 754. |
A block weighing 18 N is lifted 7 m vertically upward. The potential energy stored in it is |
| A. | 126 J |
| B. | 120 J |
| C. | 130 J |
| D. | 124 J |
| Answer» B. 120 J | |
| 755. |
If a box is pulled by a rope making an angle with the surface then the horizontal component of force is equal to |
| A. | F sinθ |
| B. | F cosθ |
| C. | F tanθ |
| D. | F cotθ |
| Answer» C. F tanθ | |
| 756. |
1 Pa is equal to |
| A. | 2 Nm-2 |
| B. | 5 Nm-2 |
| C. | 1 Nm-2 |
| D. | 10 Nm-2 |
| Answer» D. 10 Nm-2 | |
| 757. |
In SI, the unit of stress is |
| A. | Nm-3 |
| B. | Nm4 |
| C. | Nm-2 |
| D. | Nm-1 |
| Answer» D. Nm-1 | |
| 758. |
At sea level, the atmospheric pressure is about |
| A. | 101,300 Pa |
| B. | 125,000 Pa |
| C. | 163,000 Pa |
| D. | 200,300 Pa |
| Answer» B. 125,000 Pa | |
| 759. |
Matter is made up of particles known as |
| A. | molecules |
| B. | chemicals |
| C. | radicants |
| D. | hydrocarbons |
| Answer» B. chemicals | |
| 760. |
The strain produced in a body by the stress applied to it is directly proportional to the stress within the elasticity limit of the body is called |
| A. | Newton's law |
| B. | Hooke's law |
| C. | Pascal's law |
| D. | Einstein law |
| Answer» C. Pascal's law | |