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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.
| 1001. |
The remaining sewage after it has passed through the sludge tank is known as |
| A. | treated sewage |
| B. | effluent |
| C. | clinker |
| D. | distillate |
| Answer» C. clinker | |
| 1002. |
The disease due to water-related disease is broken out by |
| A. | bacteria |
| B. | viruses |
| C. | snails |
| D. | worms |
| Answer» E. | |
| 1003. |
The common name for the 'enzymes' which digest protein is |
| A. | pepsin |
| B. | renin |
| C. | maltase |
| D. | protease |
| Answer» E. | |
| 1004. |
The chemical breakdown of food is because of |
| A. | chewing |
| B. | digesting |
| C. | acids and chemicals |
| D. | alkalis |
| Answer» D. alkalis | |
| 1005. |
Muscles contraction in 'esophagus' is known as |
| A. | pushing |
| B. | peristalsis |
| C. | analysis |
| D. | momentum |
| Answer» C. analysis | |
| 1006. |
Eating food quickly stimulates the production of |
| A. | saliva |
| B. | enzymes |
| C. | acid and gastric juice |
| D. | alkali |
| Answer» D. alkali | |
| 1007. |
The first step in digestion process is |
| A. | chewing |
| B. | digestion |
| C. | ingestion |
| D. | egestion |
| Answer» B. digestion | |
| 1008. |
The component of plants that our stomach cannot digest is |
| A. | vitamin |
| B. | mineral |
| C. | cellulose |
| D. | centrioles |
| Answer» D. centrioles | |
| 1009. |
The alimentary canal is approximately |
| A. | 10 feet long |
| B. | 20 feet long |
| C. | 10 meters long |
| D. | 12 yards long |
| Answer» D. 12 yards long | |
| 1010. |
Too much acid in the stomach can cause |
| A. | infection |
| B. | burning |
| C. | fever |
| D. | ulcer |
| Answer» E. | |
| 1011. |
The length of small 'intestine' is |
| A. | 90% of the alimentary track |
| B. | 80% of the alimentary track |
| C. | 70% of the alimentary track |
| D. | 60% of the alimentary track |
| Answer» D. 60% of the alimentary track | |
| 1012. |
The process of breaking down food into smaller molecules is known as |
| A. | digestion |
| B. | breakage |
| C. | crushing |
| D. | grinding |
| Answer» B. breakage | |
| 1013. |
A small projection on the surface of small intestine is known as |
| A. | hair |
| B. | grass |
| C. | villi |
| D. | loops |
| Answer» D. loops | |
| 1014. |
The solid matter settled at the bottom is scraped away by electricity in |
| A. | metal screen |
| B. | grit tank |
| C. | sludge tank |
| D. | filter bed |
| Answer» D. filter bed | |
| 1015. |
On earth percentage of fresh water is |
| A. | 0.03 |
| B. | 0.05 |
| C. | 0.1 |
| D. | 0.2 |
| Answer» B. 0.05 | |
| 1016. |
Feces and urine is also part of |
| A. | garbage |
| B. | treated waste |
| C. | untreated waste |
| D. | all of them |
| Answer» D. all of them | |
| 1017. |
The number of 'oceans' on earth is |
| A. | 4 |
| B. | 5 |
| C. | 6 |
| D. | 7 |
| Answer» C. 6 | |
| 1018. |
Hot water also stimulates the growth of |
| A. | algae |
| B. | fungi |
| C. | bacteria |
| D. | viruses |
| Answer» B. fungi | |
| 1019. |
The temperature in the 'sunspots' is |
| A. | very high |
| B. | very low |
| C. | normal |
| D. | cool |
| Answer» C. normal | |
| 1020. |
The telescopes that use mirrors instead of lenses are known as |
| A. | Radio telescopes |
| B. | Reflecting telescopes |
| C. | Refracting telescopes |
| D. | Hubble telescopes |
| Answer» C. Refracting telescopes | |
| 1021. |
The fuel of sun is hydrogen gas. It turns into helium by nuclear fusion |
| A. | in the core of the sun |
| B. | in the center of the sun |
| C. | in the atmosphere of the sun |
| D. | in the boundary of sun |
| Answer» D. in the boundary of sun | |
| 1022. |
Astronomers can pick up radio waves from galaxies that are |
| A. | millions of kilometers away |
| B. | millions of light years away |
| C. | thousands of kilometers away |
| D. | hundreds of light years away |
| Answer» C. thousands of kilometers away | |
| 1023. |
The best way to study sun is to send |
| A. | space probes |
| B. | spacecraft |
| C. | space shuttles |
| D. | jets |
| Answer» B. spacecraft | |
| 1024. |
The chemical reactions which take place inside a cell provides |
| A. | heat |
| B. | energy |
| C. | product |
| D. | resistor |
| Answer» C. product | |
| 1025. |
A measuring capacity of an electrical component which resists or opposes the current flow is called |
| A. | resistance |
| B. | circuit |
| C. | ammeter |
| D. | current |
| Answer» B. circuit | |
| 1026. |
The path along which electric current flows is called |
| A. | electric current |
| B. | electrical charge |
| C. | electric cell |
| D. | electric circuit |
| Answer» E. | |
| 1027. |
In alighted bulb there is a flow of electrons in |
| A. | filament |
| B. | socket |
| C. | glass |
| D. | holder |
| Answer» B. socket | |
| 1028. |
In a parallel circuit the resistance decreases with increase in number of |
| A. | resistors |
| B. | bulbs |
| C. | circuit |
| D. | battery |
| Answer» B. bulbs | |
| 1029. |
Changes occur in matter at |
| A. | specific times |
| B. | all the times |
| C. | thermal reaction |
| D. | continuously |
| Answer» C. thermal reaction | |
| 1030. |
Irreversible changes include |
| A. | burning of paper |
| B. | rusting of iron |
| C. | corrosion of material |
| D. | all of them |
| Answer» E. | |
| 1031. |
In physical changes the solutes and solvents can easily be separated by |
| A. | evaporation |
| B. | distillation |
| C. | heating |
| D. | both a and b |
| Answer» D. both a and b | |
| 1032. |
The kinetic energy in solids is less than the intermolecular |
| A. | force of attraction |
| B. | energy of attraction |
| C. | force of gravity |
| D. | force of gravity |
| Answer» C. force of gravity | |
| 1033. |
The color of hydrous copper sulfate is |
| A. | black |
| B. | blue |
| C. | orange |
| D. | white |
| Answer» E. | |
| 1034. |
The kinetic energy in gases is greater than the intermolecular |
| A. | force of attraction |
| B. | force of particles |
| C. | force of elements |
| D. | force of gravity |
| Answer» B. force of particles | |
| 1035. |
The substance which helps in accelerating reaction is called |
| A. | reactors |
| B. | assistors |
| C. | catalysts |
| D. | catalytic enzymes |
| Answer» D. catalytic enzymes | |
| 1036. |
The intermolecular force of attraction between molecules in solids are |
| A. | weaker than gases |
| B. | stronger than gases but weaker than liquids |
| C. | stronger than both, liquids and gases |
| D. | weaker than gases but stronger than liquids |
| Answer» D. weaker than gases but stronger than liquids | |
| 1037. |
The largest radio telescope was built into a natural hollow in the |
| A. | cave |
| B. | hive |
| C. | jungle |
| D. | desert |
| Answer» D. desert | |
| 1038. |
The closest star to the earth is |
| A. | Sirius |
| B. | Sun |
| C. | Achemar |
| D. | Aldebaran |
| Answer» C. Achemar | |
| 1039. |
Sirius 'B' is a |
| A. | yellow star |
| B. | white dwarf |
| C. | blue giant |
| D. | red supergiant |
| Answer» C. blue giant | |
| 1040. |
Radio waves have a higher wavelength than |
| A. | sound |
| B. | light waves |
| C. | energy |
| D. | current |
| Answer» C. energy | |
| 1041. |
Looking at sun for a look time, we can suffer from |
| A. | blindness |
| B. | eye weakness |
| C. | sight disorder |
| D. | retina paralyzation |
| Answer» B. eye weakness | |
| 1042. |
At night, land turns to be |
| A. | warm than sea |
| B. | cool than sea |
| C. | very hot |
| D. | extremely hot |
| Answer» C. very hot | |
| 1043. |
Radio waves that carry signals of radio and television, travel at |
| A. | speed of light |
| B. | speed of comet |
| C. | speed of Earth |
| D. | speed of Venus |
| Answer» B. speed of comet | |
| 1044. |
Kettles and saucepans are painted silver, this is why they |
| A. | absorb less heat |
| B. | reflect less heat |
| C. | absorb more heat |
| D. | release less heat |
| Answer» E. | |
| 1045. |
A solar 'eclipse' occurs when |
| A. | sun comes between earth and moon |
| B. | moon comes between earth and sun |
| C. | earth comes between moon and sun |
| D. | sun is behind earth and moon |
| Answer» C. earth comes between moon and sun | |
| 1046. |
By the theory of eclipse, we conclude that |
| A. | light is faster than heat |
| B. | heat travels faster than light |
| C. | both travel at the same rate |
| D. | both travels slower |
| Answer» D. both travels slower | |
| 1047. |
To avoid noise from the surroundings |
| A. | soft curtains should be used |
| B. | hard curtains should be used |
| C. | glass windows should be used |
| D. | vacuum windows should be used |
| Answer» C. glass windows should be used | |
| 1048. |
When the hand bell stimulates air particles, |
| A. | temperature increases |
| B. | pressure increases in the air |
| C. | both temperature and pressure decreases in the air |
| D. | humidity of air keeps on increasing and decreasing |
| Answer» C. both temperature and pressure decreases in the air | |
| 1049. |
Sounds with a high frequency which a human ear can detect are known as |
| A. | infrasound |
| B. | ultrasounds |
| C. | high sounds |
| D. | low sounds |
| Answer» C. high sounds | |
| 1050. |
Notes are put together to produce a pleasing sound known as |
| A. | noise |
| B. | pitch |
| C. | music |
| D. | phase |
| Answer» D. phase | |