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.
| 1901. |
Bats also use 'ultrasound' to prevent |
| A. | predators |
| B. | homes |
| C. | preys |
| D. | obstacles |
| Answer» E. | |
| 1902. |
The loudness of sound depends on |
| A. | wave front |
| B. | frequency |
| C. | amplitude |
| D. | wavelength |
| Answer» D. wavelength | |
| 1903. |
The star "Sirius" belongs to a constellation named |
| A. | Orion |
| B. | Canis Major |
| C. | Aquarius |
| D. | Taurus |
| Answer» C. Aquarius | |
| 1904. |
In irregular galaxies, quantity of gases and dust is |
| A. | zero |
| B. | more than stars |
| C. | less than stars |
| D. | limited |
| Answer» C. less than stars | |
| 1905. |
About one billion years after big bang, huge gas clouds started to pull together due to |
| A. | darkness |
| B. | gravity |
| C. | heat |
| D. | light |
| Answer» C. heat | |
| 1906. |
The largest split aerial telescope contains |
| A. | 20 dishes |
| B. | 23 dishes |
| C. | 25 dishes |
| D. | 27 dishes |
| Answer» E. | |
| 1907. |
Galaxies pull |
| A. | stars |
| B. | comets |
| C. | each other |
| D. | universe boundaries |
| Answer» D. universe boundaries | |
| 1908. |
The process that requires energy to move particles from one region to the other is |
| A. | osmosis |
| B. | active transport |
| C. | transpiration |
| D. | translocation |
| Answer» C. transpiration | |
| 1909. |
The process in which water and mineral salts are moved from the roots to the leaves by xylem is generally known as |
| A. | transpiration |
| B. | translocation |
| C. | respiration |
| D. | photosynthesis |
| Answer» B. translocation | |
| 1910. |
The food is carried away from leaves to the other parts of plant by |
| A. | dead cells of xylem |
| B. | sieve tubes of phloem |
| C. | companion cells of phloem |
| D. | root pressure in xylem |
| Answer» C. companion cells of phloem | |
| 1911. |
In plants roots take up water by the process of |
| A. | diffusion |
| B. | osmosis |
| C. | active transport |
| D. | respiration |
| Answer» C. active transport | |
| 1912. |
If an ink drop is dropped in water and it spreads equally in water. It is called |
| A. | diffusion |
| B. | osmosis |
| C. | active transport |
| D. | respiration |
| Answer» B. osmosis | |
| 1913. |
The transportation of food and mineral salts from leaves to all other parts of the plant by phloem is known as |
| A. | translocation |
| B. | transpiration |
| C. | respiration |
| D. | photosynthesis |
| Answer» B. transpiration | |
| 1914. |
'Xylem' and 'phloem' vessels are found in |
| A. | leaves only |
| B. | stem only |
| C. | roots only |
| D. | whole plant |
| Answer» E. | |
| 1915. |
For transportation of food and minerals, plants have |
| A. | one transport systems |
| B. | two transport system |
| C. | three transport systems |
| D. | four transport systems |
| Answer» C. three transport systems | |
| 1916. |
A membrane that lets some particles to pass through is known as |
| A. | total permeable membrane |
| B. | semi permeable membrane |
| C. | cell wall |
| D. | tonoplast |
| Answer» C. cell wall | |
| 1917. |
The oxygen in water is absorbed by the roots through |
| A. | stomata |
| B. | lenticels |
| C. | root hairs |
| D. | cuticles |
| Answer» D. cuticles | |
| 1918. |
The color of one part of spectrum is |
| A. | brown |
| B. | cyan |
| C. | indigo |
| D. | magenta |
| Answer» D. magenta | |
| 1919. |
Refractive index of diamond is |
| A. | 2 |
| B. | 2.5 |
| C. | 2.42 |
| D. | 2.65 |
| Answer» D. 2.65 | |
| 1920. |
Light bends in all materials at |
| A. | same angle |
| B. | different angles |
| C. | nearly same angles |
| D. | opposite angles |
| Answer» C. nearly same angles | |
| 1921. |
When light enters a dense medium, it leaves the object from |
| A. | the same point |
| B. | a different point |
| C. | the far end |
| D. | the close end |
| Answer» D. the close end | |
| 1922. |
If light enters a glass, it slows down more than |
| A. | 200,000 km/s |
| B. | 150,000 km/s |
| C. | 100,000 km/s |
| D. | 50,000 km/s |
| Answer» C. 100,000 km/s | |
| 1923. |
Food chains and food webs always start with a |
| A. | consumer |
| B. | detritivore |
| C. | scavenger |
| D. | green plant |
| Answer» E. | |
| 1924. |
Many animals in the desert hide themselves during day, to get rid of |
| A. | predators |
| B. | heat |
| C. | rain |
| D. | cold |
| Answer» C. rain | |
| 1925. |
Polar animals live in |
| A. | forests |
| B. | caves |
| C. | arctic |
| D. | water |
| Answer» D. water | |
| 1926. |
Most of the flowers open in daylight so that |
| A. | insects can pollinate them |
| B. | they could absorb sunlight |
| C. | they could transpire quickly |
| D. | wind could pollinate them |
| Answer» B. they could absorb sunlight | |
| 1927. |
To adopt the natural ways for survival, is known as |
| A. | adaptation |
| B. | survivalism |
| C. | adoptation |
| D. | survival |
| Answer» B. survivalism | |
| 1928. |
The number of the most common shapes of lenses are |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» C. 3 | |
| 1929. |
In optical fiber, the data is transferred in form of |
| A. | sound |
| B. | vacuum |
| C. | light |
| D. | heat |
| Answer» D. heat | |
| 1930. |
A line drawn at right angle to the plane is known as |
| A. | critical angle |
| B. | critical plane |
| C. | perpendicular plane |
| D. | normal |
| Answer» E. | |
| 1931. |
The higher the "refractive index" |
| A. | the less the light bends |
| B. | the more the light bends |
| C. | the more the light speeds up |
| D. | the less the light slows down |
| Answer» C. the more the light speeds up | |
| 1932. |
If a ray of light enters the surface of diamond at an angle of 24 Degree or more, the light would |
| A. | end |
| B. | reflect back |
| C. | refract at a greater angle |
| D. | totally internally reflect |
| Answer» E. | |
| 1933. |
Radio telescopes were first built and used in |
| A. | 1910s |
| B. | 1920s |
| C. | 1930s |
| D. | 1940s |
| Answer» E. | |
| 1934. |
The Sun would grow up to |
| A. | 10 times |
| B. | 100 times |
| C. | 1000 times |
| D. | 10000 times |
| Answer» C. 1000 times | |
| 1935. |
Gender constellation was named in |
| A. | 15th Century |
| B. | 16th and 17th Century |
| C. | 17th Century |
| D. | 18th and 19th Century |
| Answer» C. 17th Century | |
| 1936. |
Radio telescopes work just like |
| A. | light telescopes |
| B. | refracting telescopes |
| C. | reflecting telescopes |
| D. | rarefaction telescopes |
| Answer» B. refracting telescopes | |
| 1937. |
The explosion of a huge star is known as |
| A. | supernova |
| B. | megaboom |
| C. | supersonic explosion |
| D. | star fire |
| Answer» B. megaboom | |
| 1938. |
The rarest type of the 'galaxy' is |
| A. | peculiar galaxy |
| B. | lenticular galaxy |
| C. | irregular galaxy |
| D. | spiral galaxy |
| Answer» D. spiral galaxy | |
| 1939. |
Which is the most common type of galaxy in the universe? |
| A. | spiral galaxy |
| B. | irregular galaxy |
| C. | elliptical galaxy |
| D. | regular galaxy |
| Answer» D. regular galaxy | |
| 1940. |
In a plane mirror, light is reflected through |
| A. | eyepiece lens |
| B. | convex lens |
| C. | concave lens |
| D. | light mirror |
| Answer» B. convex lens | |
| 1941. |
The 'sun' is about |
| A. | 5,000 years old |
| B. | 5 million years old |
| C. | 5 billion years old |
| D. | 5 trillion years old |
| Answer» D. 5 trillion years old | |
| 1942. |
Ancient name of constellations refer to |
| A. | 77 areas |
| B. | 88 areas |
| C. | 99 areas |
| D. | 66 areas |
| Answer» C. 99 areas | |
| 1943. |
The nucleon number of an atom can |
| A. | differ |
| B. | change |
| C. | vary |
| D. | modify |
| Answer» B. change | |
| 1944. |
The number of elements found in the nature is approximately |
| A. | 90 |
| B. | 80 |
| C. | 100 |
| D. | 200 |
| Answer» B. 80 | |
| 1945. |
The number of neutrons in an atom effects the |
| A. | density |
| B. | size |
| C. | shape |
| D. | color |
| Answer» B. size | |
| 1946. |
The groups of elements and compounds are called |
| A. | atoms |
| B. | ions |
| C. | molecules |
| D. | allotropes |
| Answer» D. allotropes | |
| 1947. |
When shell L is completed, next electron moves to |
| A. | shell M |
| B. | shell S |
| C. | shell P |
| D. | shell F |
| Answer» B. shell S | |
| 1948. |
The process that brings forth a variety of young plants, is |
| A. | self reproduction |
| B. | cross reproduction |
| C. | self pollination |
| D. | cross pollination |
| Answer» E. | |
| 1949. |
The fruits that are eaten by animals, are |
| A. | tasteless and dry |
| B. | juicy and bright colored |
| C. | juicy but dull colored |
| D. | tasteless and dull colored |
| Answer» C. juicy but dull colored | |
| 1950. |
The 'ovary' develops into |
| A. | fruit |
| B. | flower |
| C. | seed |
| D. | new ovary |
| Answer» B. flower | |