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.
| 2001. |
In fact our earth is just a tiny speck in a vast |
| A. | space |
| B. | universe |
| C. | galaxy |
| D. | solar system |
| Answer» C. galaxy | |
| 2002. |
A huge bulge is kept heating up until hydrogen gas begins to convert into |
| A. | nitrogen gas |
| B. | oxygen gas |
| C. | helium gas |
| D. | argon gas |
| Answer» D. argon gas | |
| 2003. |
American space probe has been studying sun since |
| A. | 1995 |
| B. | 1996 |
| C. | 1997 |
| D. | 1998 |
| Answer» B. 1996 | |
| 2004. |
When energy is produced, a gas emits. This gas is called |
| A. | helium gas |
| B. | hydrogen gas |
| C. | nitrogen gas |
| D. | oxygen gas |
| Answer» B. hydrogen gas | |
| 2005. |
We see different colors on screen because dots change their |
| A. | colors |
| B. | brightness |
| C. | sharpness |
| D. | size |
| Answer» C. sharpness | |
| 2006. |
We can see things because they |
| A. | absorb light |
| B. | reflect light |
| C. | create light |
| D. | stimulate the photons of light |
| Answer» C. create light | |
| 2007. |
The number of cone cells in an eye is |
| A. | 2 million |
| B. | 4 million |
| C. | 6 million |
| D. | 8 million |
| Answer» D. 8 million | |
| 2008. |
The lens in our eye can change its thickness due to |
| A. | muscles connection |
| B. | brain power |
| C. | will power |
| D. | living cells |
| Answer» E. | |
| 2009. |
An example of object that uses concave lenses, is |
| A. | contact lenses |
| B. | telescope |
| C. | spectacles |
| D. | microscope |
| Answer» D. microscope | |
| 2010. |
A liquid cannot be |
| A. | compressed |
| B. | changed in to any shape |
| C. | boiled |
| D. | moved |
| Answer» B. changed in to any shape | |
| 2011. |
When liquid is cooled down, the particles |
| A. | lose energy |
| B. | slow down |
| C. | move faster |
| D. | both a and b |
| Answer» E. | |
| 2012. |
At night every star we see in the sky takes light from |
| A. | Moon |
| B. | Earth |
| C. | Sun |
| D. | Milky way |
| Answer» D. Milky way | |
| 2013. |
'Mars' is also names as |
| A. | red planet |
| B. | orange planet |
| C. | blue planet |
| D. | yellow planet |
| Answer» E. | |
| 2014. |
An American agency "NASA" launched a solar laboratory in |
| A. | 2000 |
| B. | 2006 |
| C. | 2010 |
| D. | 1998 |
| Answer» D. 1998 | |
| 2015. |
Each of the galaxy contains |
| A. | hundreds of stars |
| B. | thousands of stars |
| C. | millions of stars |
| D. | billions of stars |
| Answer» D. billions of stars | |
| 2016. |
The shape of the milky way is |
| A. | spiral |
| B. | elliptical |
| C. | irregular |
| D. | regular |
| Answer» B. elliptical | |
| 2017. |
The wires used in the main supply system are |
| A. | live and earth |
| B. | live, neutral and earth |
| C. | live and neutral |
| D. | live, neutral, earth, positive and negative |
| Answer» C. live and neutral | |
| 2018. |
A material which gains electrons, becomes |
| A. | positively charged |
| B. | negatively charged |
| C. | neutral |
| D. | both positively and negatively charged |
| Answer» C. neutral | |
| 2019. |
Energy is equal to |
| A. | power/distance |
| B. | power/time |
| C. | distance x time |
| D. | power x time |
| Answer» E. | |
| 2020. |
Electrolyte contains a compound of |
| A. | metal on anode |
| B. | metal on cathode |
| C. | metalloid on anode |
| D. | transition metal on cathode |
| Answer» B. metal on cathode | |
| 2021. |
Resistance is the friction in an electrical circuit that controls the flow of |
| A. | current |
| B. | voltage |
| C. | light |
| D. | electricity |
| Answer» D. electricity | |
| 2022. |
If light enters the glass with an angle of 44 degree or greater, it |
| A. | would refract |
| B. | would not reflect |
| C. | would end up |
| D. | would not refract |
| Answer» E. | |
| 2023. |
Each material has |
| A. | same values of critical angle |
| B. | different values of critical angle |
| C. | alternate values of critical angle |
| D. | calculated values of critical angle |
| Answer» C. alternate values of critical angle | |
| 2024. |
When green and blue colors are combined together, they form |
| A. | orange |
| B. | grey |
| C. | cyan |
| D. | maroon |
| Answer» D. maroon | |
| 2025. |
The cones are sensitive to |
| A. | bright light |
| B. | dim light |
| C. | colored Vision |
| D. | blur Vision |
| Answer» B. dim light | |
| 2026. |
When red and green colors are mixed together, they form |
| A. | yellow color |
| B. | magenta color |
| C. | orange color |
| D. | purple color |
| Answer» B. magenta color | |
| 2027. |
If air is heated, it |
| A. | compresses |
| B. | expands |
| C. | falls down |
| D. | gets dense |
| Answer» C. falls down | |
| 2028. |
An example of bad conductor of heat is |
| A. | aluminum |
| B. | copper |
| C. | gold |
| D. | plastic |
| Answer» E. | |
| 2029. |
When warm air rises above the land, |
| A. | vacuum is created beneath it |
| B. | more warmer air replaces it |
| C. | temperature decreases |
| D. | cool air from sea replaces it |
| Answer» E. | |
| 2030. |
The best insulating windows use |
| A. | single glazed windows |
| B. | double glazed windows |
| C. | double painted windows |
| D. | single painted windows |
| Answer» C. double painted windows | |
| 2031. |
The movement of cool air from land to sea is known as |
| A. | sea breeze |
| B. | land breeze |
| C. | forward breeze |
| D. | reverse breeze |
| Answer» C. forward breeze | |
| 2032. |
Most of the oxygen from soil is dissolved in |
| A. | minerals |
| B. | water |
| C. | mineral salts |
| D. | roots hair |
| Answer» C. mineral salts | |
| 2033. |
Root cells contain a large amount of |
| A. | food only |
| B. | food and minerals |
| C. | minerals and sugar |
| D. | food and sugar |
| Answer» D. food and sugar | |
| 2034. |
As wind blows, it takes water vapors away from plant and decreases the humidity. This process |
| A. | increases the rate of transpiration |
| B. | decreases the rate of transpiration |
| C. | keeps the rate of transpiration same |
| D. | may increase or decrease the rate of transpiration |
| Answer» B. decreases the rate of transpiration | |
| 2035. |
More force is required to pull water and minerals up to the leaves of |
| A. | small stems of growing plants |
| B. | tree trunks |
| C. | herbs |
| D. | ferns |
| Answer» C. herbs | |
| 2036. |
Some amount of mineral salts enter the roots by the process of |
| A. | diffusion |
| B. | osmosis |
| C. | active transport |
| D. | respiration |
| Answer» B. osmosis | |
| 2037. |
Gold is often in a state of matter which is |
| A. | solid |
| B. | liquid |
| C. | gas |
| D. | molten |
| Answer» B. liquid | |
| 2038. |
A theory that matter is made up of small discrete particles which are like solid balls, was presented by |
| A. | Democritus |
| B. | Aristotle |
| C. | Robert brown |
| D. | John Dalton |
| Answer» E. | |
| 2039. |
Pollen grains in water were first observed by Scottish scientist |
| A. | Democritus |
| B. | Aristotle |
| C. | Robert brown |
| D. | Albert Einstein |
| Answer» D. Albert Einstein | |
| 2040. |
Change in the state of matter from liquid into solid is known as |
| A. | melting |
| B. | boiling |
| C. | freezing |
| D. | solidifying |
| Answer» D. solidifying | |
| 2041. |
When matter changes its state |
| A. | no new substances are formed |
| B. | arrangement of particles is changed |
| C. | motion of particles is changed |
| D. | all of them |
| Answer» E. | |
| 2042. |
If we try to cross Milky way galaxy, it will take us |
| A. | 100 light years |
| B. | 100,000 years |
| C. | 100 years |
| D. | 100,000 light years |
| Answer» E. | |
| 2043. |
Nuclear fusion takes place in the |
| A. | mantle |
| B. | outer core |
| C. | inner core |
| D. | crust |
| Answer» D. crust | |
| 2044. |
The brightest star in night is |
| A. | Deneb |
| B. | Sirius |
| C. | Aldebaran |
| D. | Rigel |
| Answer» C. Aldebaran | |
| 2045. |
Sometimes a blazing burst of gas comes from the surface of Sun and shoots up to hundreds and thousands kilometers into space, then loop back down. These blasts are known as |
| A. | sun blasters |
| B. | sunbursts |
| C. | hydro explosions |
| D. | prominence |
| Answer» E. | |
| 2046. |
The main mirror of "Hubble telescope" is about |
| A. | 2 meters in diameter |
| B. | 2 meters in radius |
| C. | 2.4 meters in diameter |
| D. | 2.4 meters in radius |
| Answer» D. 2.4 meters in radius | |
| 2047. |
If the mass of a substance is lowered, its density will be |
| A. | increased |
| B. | decreased |
| C. | same |
| D. | constant |
| Answer» B. decreased | |
| 2048. |
A point at which a liquid is changed into gas at a specific temperature, is called |
| A. | melting point |
| B. | boiling point |
| C. | freezing point |
| D. | evaporation |
| Answer» E. | |
| 2049. |
Definite shape, volume, high density and uneasy flow are the physical properties of a |
| A. | solid |
| B. | liquid |
| C. | gas |
| D. | water |
| Answer» B. liquid | |
| 2050. |
Bromine is a gas which should be handled in fume cupboard as it is |
| A. | poisonous |
| B. | harmless |
| C. | non-toxic |
| D. | useful |
| Answer» B. harmless | |