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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.
| 2101. |
A device that uses special film to photograph heat is known as |
| A. | Thermal goggles |
| B. | Thermal recording camera |
| C. | Thermal imaging camera |
| D. | Thermal hotspot goggles |
| Answer» D. Thermal hotspot goggles | |
| 2102. |
A lot of heat turns the color of a metal |
| A. | yellow |
| B. | orange |
| C. | red |
| D. | blue |
| Answer» D. blue | |
| 2103. |
Poor conductor of heat is called |
| A. | electrical insulator |
| B. | electrical conductor |
| C. | thermal conductor |
| D. | thermal insulator |
| Answer» E. | |
| 2104. |
Within seconds of explosion, atomic particles come together to make gases |
| A. | oxygen and hydrogen |
| B. | hydrogen and nitrogen |
| C. | hydrogen and helium |
| D. | oxygen and nitrogen |
| Answer» D. oxygen and nitrogen | |
| 2105. |
The surface of blue and white stars shines |
| A. | brightly |
| B. | dimly |
| C. | normally |
| D. | colorfully |
| Answer» B. dimly | |
| 2106. |
Like other galaxies, the whole milky way is travelling through |
| A. | space |
| B. | solar systems |
| C. | planets |
| D. | stars |
| Answer» B. solar systems | |
| 2107. |
A light year is almost |
| A. | 3 million kilometers |
| B. | 9.5 million kilometers |
| C. | 3 billion kilometers |
| D. | 9.5 billion kilometers |
| Answer» E. | |
| 2108. |
The belt of 'constellations' is called |
| A. | Zodiac |
| B. | Perseus |
| C. | Hercules |
| D. | Ursa |
| Answer» B. Perseus | |
| 2109. |
Mineral water is mixture of many |
| A. | minerals |
| B. | metals |
| C. | gases |
| D. | compounds |
| Answer» B. metals | |
| 2110. |
To separate different constituents with different boiling points into fractions there is use of |
| A. | fractioning column |
| B. | fractioning tower |
| C. | fractioning box |
| D. | both a and b |
| Answer» E. | |
| 2111. |
'1465' is the boiling point for |
| A. | sodium chloride |
| B. | chlorine |
| C. | sodium |
| D. | water |
| Answer» B. chlorine | |
| 2112. |
Mixtures are impure and hence have different |
| A. | melting point |
| B. | boiling point |
| C. | densities |
| D. | melting and boiling point |
| Answer» E. | |
| 2113. |
Ink has different constituents which are soluble in |
| A. | water |
| B. | alcohol |
| C. | chemical |
| D. | drinks |
| Answer» D. drinks | |
| 2114. |
The pollen grains of bird pollinated flowers are |
| A. | lightweight and sticky |
| B. | lightweight and slippery |
| C. | huge and sticky |
| D. | huge and slippery |
| Answer» D. huge and slippery | |
| 2115. |
After the root has grown downwards, a small shoot grows upward, towards light. This shoot is known as |
| A. | radicle |
| B. | plumule |
| C. | stem |
| D. | cotyledon |
| Answer» C. stem | |
| 2116. |
If plants and animals do not reproduce, they would |
| A. | sick |
| B. | born |
| C. | change |
| D. | extinct |
| Answer» E. | |
| 2117. |
The surface of a stigma is often |
| A. | hairy |
| B. | greasy |
| C. | sticky |
| D. | dry |
| Answer» D. dry | |
| 2118. |
Some plants have seeds with hooks for |
| A. | pollination |
| B. | fertilization |
| C. | dispersion |
| D. | reproduction |
| Answer» D. reproduction | |
| 2119. |
The crops that need a lot of water are |
| A. | rice and maize |
| B. | wheat and maize |
| C. | rice and wheat |
| D. | maize and other grains |
| Answer» D. maize and other grains | |
| 2120. |
Human feces stimulates the growth of |
| A. | algae |
| B. | fungi |
| C. | bacteria |
| D. | viruses |
| Answer» B. fungi | |
| 2121. |
As compared to shower, the bath tub uses |
| A. | less water |
| B. | more water |
| C. | equal water |
| D. | not sure |
| Answer» C. equal water | |
| 2122. |
'Water' is |
| A. | sweet |
| B. | sour |
| C. | bitter |
| D. | odorless |
| Answer» E. | |
| 2123. |
The bacteria that decompose algae take up all the |
| A. | sunlight |
| B. | oxygen |
| C. | minerals |
| D. | useful gases in the water |
| Answer» C. minerals | |
| 2124. |
Things that give off light are known as |
| A. | non luminous objects |
| B. | luminous objects |
| C. | transparent objects |
| D. | opaque objects |
| Answer» C. transparent objects | |
| 2125. |
The color blindness occurs due to |
| A. | lack of rods |
| B. | problem in rods |
| C. | problem in cones |
| D. | variation in cones |
| Answer» D. variation in cones | |
| 2126. |
The rods are mostly found |
| A. | in the center of retina |
| B. | at the blind spot |
| C. | at the edges of retina |
| D. | above and below retina |
| Answer» D. above and below retina | |
| 2127. |
When light enters a less dense medium, it bends |
| A. | away from the normal path |
| B. | towards the normal path |
| C. | away from the plane |
| D. | towards the plane |
| Answer» B. towards the normal path | |
| 2128. |
Light travels |
| A. | faster than sound |
| B. | slower than sound |
| C. | faster than gamma rays |
| D. | faster than x-rays |
| Answer» B. slower than sound | |
| 2129. |
To which level, the current slows down depends on |
| A. | two things |
| B. | three things |
| C. | five things |
| D. | six things |
| Answer» C. five things | |
| 2130. |
The current in parallel circuit depends on |
| A. | the components in that branch |
| B. | the length of that branch |
| C. | the thickness of that branch |
| D. | the density of that branch |
| Answer» B. the length of that branch | |
| 2131. |
Compared to long thin wire of nichrome, the short thick wire has |
| A. | more resistivity |
| B. | less resistivity |
| C. | equal resistivity |
| D. | no resistivity |
| Answer» C. equal resistivity | |
| 2132. |
In our homes, electric supply uses |
| A. | series circuit |
| B. | parallel circuit |
| C. | both circuits |
| D. | electrionic circuit |
| Answer» C. both circuits | |
| 2133. |
Compared to devices having wires, torch bulb does not conduct |
| A. | heat as well as wires |
| B. | electricity as well as wires |
| C. | both a and b |
| D. | electricity as well as energy |
| Answer» C. both a and b | |
| 2134. |
Different craters and ridges are seen on the surface of |
| A. | Sun |
| B. | Earth |
| C. | Moon |
| D. | Jupiter |
| Answer» D. Jupiter | |
| 2135. |
Earth has a lot of water on its surface to support diversity of |
| A. | temperature |
| B. | life |
| C. | seasons |
| D. | weather |
| Answer» C. seasons | |
| 2136. |
The dark matter filled between spaces in galaxies is called |
| A. | intergalactic space |
| B. | inter planets space |
| C. | air space |
| D. | interstitial space |
| Answer» B. inter planets space | |
| 2137. |
Earth takes 24 hours to complete one |
| A. | rotation |
| B. | revolution |
| C. | season |
| D. | year |
| Answer» B. revolution | |
| 2138. |
The path of an object which revolves around another object in outer space is called a |
| A. | star |
| B. | moon |
| C. | galaxy |
| D. | satellite |
| Answer» E. | |
| 2139. |
A sheet of pure copper is used as |
| A. | cathode |
| B. | anode |
| C. | positrode |
| D. | negatrode |
| Answer» B. anode | |
| 2140. |
Using a high current fuse in a low current appliance is very |
| A. | safe |
| B. | dangerous |
| C. | necessary |
| D. | complicated |
| Answer» C. necessary | |
| 2141. |
If a live wire comes in contact with the metal casing, the excess current will move to |
| A. | power house |
| B. | casing |
| C. | dynamo |
| D. | transformer |
| Answer» C. dynamo | |
| 2142. |
If you are the only conductor around, the electricity will flow through |
| A. | you |
| B. | me |
| C. | us |
| D. | insulator |
| Answer» B. me | |
| 2143. |
Electricity flows through any |
| A. | material |
| B. | insulator |
| C. | conductor |
| D. | state of matter |
| Answer» D. state of matter | |
| 2144. |
If we remove electron from the outer shell, the atom turns |
| A. | negative |
| B. | positive |
| C. | neutral |
| D. | anti negative |
| Answer» C. neutral | |
| 2145. |
The valency of inert of rare gases is |
| A. | 8 |
| B. | 10 |
| C. | 0 |
| D. | 5 |
| Answer» D. 5 | |
| 2146. |
Radioisotopes can also be traced |
| A. | inside human body |
| B. | 10,000 kilometers underground |
| C. | in feces of animals |
| D. | in plants |
| Answer» B. 10,000 kilometers underground | |
| 2147. |
The symbol of "Beryllium" is |
| A. | Na |
| B. | Li |
| C. | Ba |
| D. | Be |
| Answer» E. | |
| 2148. |
The number of elements discovered yet, is |
| A. | 100 |
| B. | 107 |
| C. | 110 |
| D. | 117 |
| Answer» E. | |
| 2149. |
A huge ball of hot gases which is also referred to as a star, is |
| A. | sun |
| B. | moon |
| C. | meteorite |
| D. | satellite |
| Answer» B. moon | |
| 2150. |
'Uranus' and 'Neptune' were visited by space probe |
| A. | voyager-1 |
| B. | voyager-2 |
| C. | voyager-x |
| D. | both a and b |
| Answer» C. voyager-x | |