MCQOPTIONS
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MCQOPTIONS
This section includes 2268 Mcqs, each offering curated multiple-choice questions to sharpen your Grade7 knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Most of the seeds can stay dormant in soil for |
| A. | 50 months |
| B. | 50 days |
| C. | 50 years |
| D. | 50 decades |
| Answer» D. 50 decades | |
| 2. |
The final destination of the pollen tube is |
| A. | style |
| B. | ovule |
| C. | pollen grain |
| D. | flower bottom |
| Answer» C. pollen grain | |
| 3. |
The stalk on which the round shaped structures hang is known as |
| A. | anthers |
| B. | filaments |
| C. | stamens |
| D. | carpels |
| Answer» C. stamens | |
| 4. |
Young plants are more like their parents in |
| A. | self pollination |
| B. | cross pollination |
| C. | inverse pollination |
| D. | asexual reproduction |
| Answer» B. cross pollination | |
| 5. |
The round structures of the tip of the male reproductive parts of a flower contain |
| A. | sperms |
| B. | pollen grains |
| C. | seeds |
| D. | beads |
| Answer» C. seeds | |
| 6. |
Everything we eat is made up of |
| A. | fruits |
| B. | vegetables |
| C. | nutrients |
| D. | molecules |
| Answer» E. | |
| 7. |
The mechanical breakdown of food is due to |
| A. | hydrochloric acid |
| B. | pepsin |
| C. | chewing |
| D. | peristalsis |
| Answer» D. peristalsis | |
| 8. |
The enzyme which is formed in mouth, is known as |
| A. | starch |
| B. | amylase |
| C. | lipase |
| D. | insulin |
| Answer» C. lipase | |
| 9. |
After processing of food in stomach, it moves into |
| A. | large intestine |
| B. | small Intestine |
| C. | rectum |
| D. | anus |
| Answer» C. rectum | |
| 10. |
The enzymes that digest fats are known as |
| A. | lipase |
| B. | trypsin |
| C. | maltase |
| D. | fatase |
| Answer» B. trypsin | |
| 11. |
After Big Bang, the period which Solar system took for coming into being was about |
| A. | 9 thousand years |
| B. | 18 thousand years |
| C. | 9 billion years |
| D. | 18 billion years |
| Answer» D. 18 billion years | |
| 12. |
The mass of 'Sirus A' is |
| A. | 1.5 times of the Sun |
| B. | 1.8 times of the Sun |
| C. | 2.3 times of the Sun |
| D. | 2.5 times of the Sun |
| Answer» D. 2.5 times of the Sun | |
| 13. |
After every eleven years, the rate of sunspots on the surface of sun is |
| A. | decreasing |
| B. | increasing |
| C. | lowering |
| D. | isolating |
| Answer» C. lowering | |
| 14. |
The stars of the galaxy are continuously moving around the |
| A. | center of sun |
| B. | center of galaxy |
| C. | center of milky way |
| D. | all of above |
| Answer» C. center of milky way | |
| 15. |
The diameter of the lens of the largest telescope is |
| A. | 5 m |
| B. | 8.5 m |
| C. | 10.4 m |
| D. | 12.2 m |
| Answer» D. 12.2 m | |
| 16. |
Almost half of the sun's hydrogen has been converted into |
| A. | helium |
| B. | nitrogen |
| C. | oxygen |
| D. | xenon |
| Answer» B. nitrogen | |
| 17. |
The diameter of Sirius-A is |
| A. | 1.5 times of the Sun |
| B. | 1.8 times of the Sun |
| C. | 2.3 times of the Sun |
| D. | 2.5 times of the Sun |
| Answer» C. 2.3 times of the Sun | |
| 18. |
The sun is the center of the |
| A. | galaxies |
| B. | milky way |
| C. | universe |
| D. | solar system |
| Answer» E. | |
| 19. |
Stars of a constellation look close together. Infact they are on immense |
| A. | distances |
| B. | horizons |
| C. | paths |
| D. | sphere |
| Answer» B. horizons | |
| 20. |
Astronomers search black holes |
| A. | directly |
| B. | indirectly |
| C. | using satellites |
| D. | using space probes |
| Answer» C. using satellites | |
| 21. |
The objects that do not produce light look colored because they |
| A. | absorb light |
| B. | reflect light |
| C. | refract light |
| D. | deflect light |
| Answer» C. refract light | |
| 22. |
The wave and a ray that could be present at the top and bottom of seven lights are |
| A. | gamma rays and micro waves |
| B. | x-rays and radio waves |
| C. | ultraviolet rays and infrared waves |
| D. | gamma rays and infrared waves |
| Answer» D. gamma rays and infrared waves | |
| 23. |
Sound is an example of a longitudinal wave because sound waves move forwards periodically displacing molecules in |
| A. | the air |
| B. | the space |
| C. | a hollow place |
| D. | the atmosphere |
| Answer» B. the space | |
| 24. |
Light can only pass through |
| A. | transparent objects |
| B. | opaque objects |
| C. | luminous objects |
| D. | non luminous objects |
| Answer» B. opaque objects | |
| 25. |
To notice the rainbow, the rain should be |
| A. | in front of you |
| B. | behind you |
| C. | on the left side |
| D. | on the right side |
| Answer» B. behind you | |
| 26. |
An example of stringed instruments is |
| A. | guitar |
| B. | saxophone |
| C. | drum |
| D. | flute |
| Answer» B. saxophone | |
| 27. |
The length of air cutting is changed by |
| A. | valves |
| B. | fingers |
| C. | valves and fingers |
| D. | hands |
| Answer» D. hands | |
| 28. |
Sound created by musical instruments is amplified by |
| A. | increasing string vibration |
| B. | decreasing string vibration |
| C. | wooden sound box |
| D. | metallic sound box |
| Answer» D. metallic sound box | |
| 29. |
Sound cannot travel in vacuum because |
| A. | there is no pressure in vacuum |
| B. | there is no air in vacuum |
| C. | there is no humidity in vacuum |
| D. | there are no particle in vacuum |
| Answer» E. | |
| 30. |
Sound travels more fast in |
| A. | air |
| B. | liquids |
| C. | solids |
| D. | all of above |
| Answer» E. | |
| 31. |
As the light intensity increases the rate of transpiration is also |
| A. | increased |
| B. | decreased |
| C. | remained same |
| D. | remained unchanged |
| Answer» B. decreased | |
| 32. |
The force acting on water and minerals from bottom is known as |
| A. | root stream |
| B. | root pressure |
| C. | root push |
| D. | root pull |
| Answer» C. root push | |
| 33. |
The vessel that carries mineral salts from the roots to leaves is |
| A. | xylem |
| B. | phloem |
| C. | branch |
| D. | stem |
| Answer» B. phloem | |
| 34. |
The cross walls of phloem vessels are known as |
| A. | cross tissues |
| B. | cross plates |
| C. | sieve walls |
| D. | sieve plates |
| Answer» E. | |
| 35. |
The rate of transpiration depends on |
| A. | condition of a plant |
| B. | surroundings |
| C. | plant's condition and surrounding |
| D. | temperature |
| Answer» D. temperature | |
| 36. |
The process in which a bell keeps on repeating until the bell press is |
| A. | pushed |
| B. | pulled |
| C. | released |
| D. | hooked |
| Answer» D. hooked | |
| 37. |
A source that makes electrons to move is known as |
| A. | battery |
| B. | dam |
| C. | turbine |
| D. | dynamo |
| Answer» B. dam | |
| 38. |
The best fit fuse for the hair drier that requires '2A' current is |
| A. | 5A |
| B. | 4A |
| C. | 3A |
| D. | 2A |
| Answer» D. 2A | |
| 39. |
The heating element of electric appliances like iron, hair driers, kettles and toasters use |
| A. | thick copper wire |
| B. | thick nichrome wire |
| C. | thin copper wire |
| D. | thin nichrome wire |
| Answer» E. | |
| 40. |
Inserting any part of human body to the socket can cause him |
| A. | illness |
| B. | a nasty shock |
| C. | paralysis |
| D. | unconsciousness |
| Answer» C. paralysis | |
| 41. |
The northern hemisphere tilts towards the sun during |
| A. | summer |
| B. | winter |
| C. | autumn |
| D. | spring |
| Answer» B. winter | |
| 42. |
The rotational speed of earth around sun is equal to |
| A. | 111000 km /h |
| B. | 110000km/h |
| C. | 101000km/h |
| D. | 1000010km/h |
| Answer» C. 101000km/h | |
| 43. |
Neil Armstrong was the first man who set foot on |
| A. | moon |
| B. | space |
| C. | stars |
| D. | galaxy |
| Answer» B. space | |
| 44. |
To explore Mars planet, in 2004 Martian surface was explored by safe landing of |
| A. | rovers |
| B. | satellites |
| C. | voyager |
| D. | space probe |
| Answer» B. satellites | |
| 45. |
The color of solid sulphur is |
| A. | green |
| B. | brown |
| C. | white |
| D. | yellow |
| Answer» E. | |
| 46. |
The reaction of 'magnesium' with air is |
| A. | exothermic reaction |
| B. | endothermic reaction |
| C. | reversible reaction |
| D. | substitution reaction |
| Answer» B. endothermic reaction | |
| 47. |
'Plastics' are |
| A. | nature made |
| B. | self made |
| C. | man made |
| D. | ion-made |
| Answer» D. ion-made | |
| 48. |
The name of the inventor who invented plastic is |
| A. | John Dalton |
| B. | John Green |
| C. | Albert Einstein |
| D. | John Hyatt |
| Answer» E. | |
| 49. |
When the state of matter is changed from solid to liquid, we call it |
| A. | melting |
| B. | freezing |
| C. | boiling |
| D. | condensing |
| Answer» B. freezing | |
| 50. |
Some constellations can be seen around the year, they circle around the sky never sinking below the |
| A. | planets |
| B. | horizon |
| C. | vertex |
| D. | sky |
| Answer» C. vertex | |