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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.
| 651. |
The significant figures in 0.00580 are |
| A. | 3 |
| B. | 2 |
| C. | 1 |
| D. | 0 |
| Answer» B. 2 | |
| 652. |
The quantities that are expressed in terms of base quantities are known as |
| A. | quartile quantities |
| B. | prefixes |
| C. | base quantities |
| D. | derived quantities |
| Answer» E. | |
| 653. |
The standard quantity for measuring is called |
| A. | base quantity |
| B. | physical quantity |
| C. | derived quantity |
| D. | unit |
| Answer» E. | |
| 654. |
In screw gauge, if zero of circular scale coincides with the index line, then the zero error will be |
| A. | positive |
| B. | zero |
| C. | negative |
| D. | one |
| Answer» C. negative | |
| 655. |
Measuring cylinders have different capacities from |
| A. | 1000 mL to 2500 mL |
| B. | 10 mL to 250 mL |
| C. | 100 mL to 250 mL |
| D. | 100 mL to 2500 mL |
| Answer» E. | |
| 656. |
The least count of the meter ruler is |
| A. | 0.1 mm |
| B. | 0.5 mm |
| C. | 1 mm |
| D. | 0.001 mm |
| Answer» D. 0.001 mm | |
| 657. |
Most of the technologies throughout the world are related to |
| A. | chemistry |
| B. | biology |
| C. | mathematics |
| D. | physics |
| Answer» E. | |
| 658. |
The number of base units in SI are |
| A. | 4 |
| B. | 7 |
| C. | 9 |
| D. | 6 |
| Answer» C. 9 | |
| 659. |
In screw gauge, if zero of circular scale has crossed the index line, then the zero error will be |
| A. | zero |
| B. | positive |
| C. | negative |
| D. | one |
| Answer» D. one | |
| 660. |
The science deals with the study of living things is known as |
| A. | formula science |
| B. | physical science |
| C. | fundamental science |
| D. | biological science |
| Answer» E. | |
| 661. |
A car is made on the principles of |
| A. | mechanics |
| B. | heat |
| C. | atomic physics |
| D. | geophysics |
| Answer» B. heat | |
| 662. |
When temperature of an object is higher than its surroundings then as compare to absorbing, it is radiating |
| A. | more heat |
| B. | less heat |
| C. | equal heat |
| D. | zero heat |
| Answer» B. less heat | |
| 663. |
The materials which trap air inside them are |
| A. | bad conductors of heat |
| B. | good conductors of heat |
| C. | moderately conducts heat |
| D. | transfer heat by convection |
| Answer» B. good conductors of heat | |
| 664. |
If after a slight tilt the body returns to its previous equilibrium, then it is said to be in |
| A. | zero equilibrium |
| B. | stable equilibrium |
| C. | unstable equilibrium |
| D. | neutral equilibrium |
| Answer» C. unstable equilibrium | |
| 665. |
Using trigonometric ratios, for a right angle triangle tanθ is equal to |
| A. | Perpendicular ⁄ Hypotenuse |
| B. | Base ⁄ Hypotenuse |
| C. | Hypotenuse ⁄ Base |
| D. | Perpendicular ⁄ Base |
| Answer» E. | |
| 666. |
The torque depends upon |
| A. | force only |
| B. | moment arm only |
| C. | mass |
| D. | force and momentum arm |
| Answer» E. | |
| 667. |
In the graphical method for the addition of forces, forces are added by |
| A. | Cramer rule |
| B. | head to tail rule |
| C. | to and fro rule |
| D. | fraction rule |
| Answer» C. to and fro rule | |
| 668. |
If no net force is applied on a body, then it is said to be in |
| A. | distance |
| B. | equilibrium |
| C. | linear motion |
| D. | motion |
| Answer» C. linear motion | |
| 669. |
If A and B are the end points of a spanner and force applied is F, then the torque of the couple is equal to |
| A. | F - AB |
| B. | F/ AB |
| C. | F × AB |
| D. | F + AB |
| Answer» D. F + AB | |
| 670. |
The point of a system where an applied force causes the system to move without rotation is termed as |
| A. | friction |
| B. | center of gravity |
| C. | center of a mass |
| D. | intersection point |
| Answer» D. intersection point | |
| 671. |
Due to weak forces between the molecules, the thermal expansion in liquids is |
| A. | less than solids |
| B. | greater than solids |
| C. | equal to solids |
| D. | equal to gases |
| Answer» C. equal to solids | |
| 672. |
The fractional increase in length per Kalvin rise in temperature is |
| A. | linear expansion |
| B. | coefficient of linear expansion |
| C. | volume expansion |
| D. | coefficient of volume expansion |
| Answer» C. volume expansion | |
| 673. |
Heat energy require to change unit mass of a substance from solid to liquid state at its melting point without change in its temperature is called its |
| A. | latent heat of vaporization |
| B. | latent heat of energy |
| C. | latent heat of fusion |
| D. | latent heat of pressure |
| Answer» D. latent heat of pressure | |
| 674. |
If we convert 60 °C into Fahrenheit scale of temperature, we get |
| A. | 300 °F |
| B. | 180 °F |
| C. | 140 °F |
| D. | 250 °F |
| Answer» D. 250 °F | |
| 675. |
Evaporation takes place at |
| A. | freezing point |
| B. | boiling point |
| C. | melting point |
| D. | all of above |
| Answer» E. | |
| 676. |
If a body works at the rate of 1 joule per second, then the power of that body will be |
| A. | one watt |
| B. | zero watt |
| C. | half watt |
| D. | two watts |
| Answer» B. zero watt | |
| 677. |
The rate of doing work is called |
| A. | efficiency |
| B. | stress |
| C. | strain |
| D. | power |
| Answer» E. | |
| 678. |
Rate at which a body does work is called |
| A. | energy |
| B. | power |
| C. | efficiency |
| D. | velocity |
| Answer» C. efficiency | |
| 679. |
When a force of one newton displaces a body through one meter in the direction of force, the amount of work is |
| A. | one omega |
| B. | one pi |
| C. | one delta |
| D. | one joule |
| Answer» E. | |
| 680. |
By burning large amount of fuel, we get |
| A. | petrol |
| B. | heat |
| C. | sound |
| D. | chemicals |
| Answer» C. sound | |
| 681. |
If a brass rod is 1m long at 0 °C and α is 1.9×10-5 K-1, then its length at 30 °C is |
| A. | 1.057 m |
| B. | 1.00057 m |
| C. | 1.57 m |
| D. | 1.0057 m |
| Answer» C. 1.57 m | |
| 682. |
On Fahrenheit scale, the lower fixed point is marked as |
| A. | 100 °F |
| B. | 0 °F |
| C. | 32 °F |
| D. | 212 °F |
| Answer» D. 212 °F | |
| 683. |
Volume thermal expansion is also termed as |
| A. | area thermal expansion |
| B. | quadratic thermal expansion |
| C. | circle thermal expansion |
| D. | cubical thermal expansion |
| Answer» E. | |
| 684. |
A brass rod is 1m long at 0 °C, if the coefficient of expansion is 1.9 * 10-5 K-1 then length at 30 °C is |
| A. | 1.00057 m |
| B. | 1.0057 m |
| C. | 1.057 m |
| D. | 15.7 m |
| Answer» B. 1.0057 m | |
| 685. |
50 °C on Fahrenheit scale is |
| A. | 123 °F |
| B. | 120 °F |
| C. | 135 °F |
| D. | 122 °F |
| Answer» E. | |
| 686. |
The study of internal structure of earth is |
| A. | geophysics |
| B. | electricity and magnetism |
| C. | mechanics |
| D. | thermodynamics |
| Answer» B. electricity and magnetism | |
| 687. |
The significant digits in 0.058 are |
| A. | 3 |
| B. | 4 |
| C. | 2 |
| D. | 0 |
| Answer» D. 0 | |
| 688. |
By using prefixes, we can write 32 × 10-10 kg as |
| A. | 0.32 µg |
| B. | 32 µg |
| C. | 3.2 µg |
| D. | 320 µg |
| Answer» D. 320 µg | |
| 689. |
We study about matter, energy and their interaction in |
| A. | Biology |
| B. | Physics |
| C. | Chemistry |
| D. | Economics |
| Answer» C. Chemistry | |
| 690. |
The prefixes are useful to express |
| A. | very small quantity only |
| B. | very large quantity only |
| C. | derived units |
| D. | very small and large quantities |
| Answer» E. | |
| 691. |
Negative acceleration is called |
| A. | friction |
| B. | retardation |
| C. | uniform acceleration |
| D. | variable acceleration |
| Answer» C. uniform acceleration | |
| 692. |
The height of tower when stone dropped from it reaches ground in 5 s is |
| A. | 130 m |
| B. | 125 m |
| C. | 150 m |
| D. | 200 m |
| Answer» C. 150 m | |
| 693. |
Motion of riders in Ferris wheel is |
| A. | rotatory |
| B. | translational |
| C. | spin |
| D. | circulatory |
| Answer» C. spin | |
| 694. |
In terms of velocity, the symbol vf is used for |
| A. | final velocity |
| B. | initial velocity |
| C. | negative velocity |
| D. | total velocity |
| Answer» B. initial velocity | |
| 695. |
The shortest distance between 2 points which also has direction and magnitude is termed as |
| A. | position |
| B. | velocity |
| C. | displacement |
| D. | distance |
| Answer» D. distance | |
| 696. |
If the weight of an object is greater than the up thrust acting on it then the object would |
| A. | balance |
| B. | equal |
| C. | float |
| D. | sink |
| Answer» E. | |
| 697. |
The body is said to be elastic if it |
| A. | returns to original shape after applying pressure |
| B. | doesn't return to original shape after applying pressure |
| C. | density is equal to pressure applied |
| D. | none of above |
| Answer» B. doesn't return to original shape after applying pressure | |
| 698. |
The force acting on unit area of the surface of a body is called |
| A. | stress |
| B. | strain |
| C. | density |
| D. | elasticity |
| Answer» B. strain | |
| 699. |
A wooden cube measuring 40cm×10cm×5cm has a mass 850 g. Its density would be |
| A. | 450 kgm-3 |
| B. | 425 kgm-3 |
| C. | 525 kgm-3 |
| D. | 480 kgm-3 |
| Answer» C. 525 kgm-3 | |
| 700. |
If the weight of an object is equal or less than the up thrust acting on it then the object would |
| A. | balance |
| B. | equal |
| C. | float |
| D. | sink |
| Answer» D. sink | |