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.
| 101. |
Hot water or steam carrying geothermal energy often comes up to surface in |
| A. | New Zealand |
| B. | Ice land |
| C. | Germany |
| D. | both a and b |
| Answer» E. | |
| 102. |
Wind is beneficial resource of energy as it doesn't cause |
| A. | pollution |
| B. | echo |
| C. | noise |
| D. | sound |
| Answer» B. echo | |
| 103. |
Thousands of mirrors or curved metals are used to focus solar energy to make it very hot, in |
| A. | solar cells |
| B. | solar heater |
| C. | solar furnace |
| D. | solar battery |
| Answer» D. solar battery | |
| 104. |
Fossil fuels are rich in carbon and |
| A. | nitrogen |
| B. | hydrogen |
| C. | nitrogen |
| D. | oxygen |
| Answer» C. nitrogen | |
| 105. |
When upthrust is equal to the weight of an object, it |
| A. | floats |
| B. | sinks |
| C. | moves |
| D. | stops |
| Answer» B. sinks | |
| 106. |
Friction between moving parts of machine causes |
| A. | heat |
| B. | light |
| C. | energy |
| D. | oil |
| Answer» B. light | |
| 107. |
Force can |
| A. | speed up |
| B. | slow down |
| C. | stop an object |
| D. | all of them |
| Answer» E. | |
| 108. |
A force which occurs when two surfaces come in contact and slows down motion while acting in |
| A. | opposite direction |
| B. | same direction |
| C. | same and opposite direction |
| D. | both a and b |
| Answer» D. both a and b | |
| 109. |
The force of friction can be reduced by the help of |
| A. | ball bearing |
| B. | lubricants |
| C. | cushion surfaces |
| D. | all of them |
| Answer» E. | |
| 110. |
The person who first arranged elements in form of periodic table was |
| A. | Lewis |
| B. | Mendeleev |
| C. | Thomas |
| D. | Darwin |
| Answer» C. Thomas | |
| 111. |
A substance which consists of two or more elements which have been combined chemically is called |
| A. | element |
| B. | compound |
| C. | mixture |
| D. | solute |
| Answer» C. mixture | |
| 112. |
Carbon, hydrogen and oxygen combine together to make |
| A. | sugar |
| B. | polythene |
| C. | chalk |
| D. | common salt |
| Answer» B. polythene | |
| 113. |
Elements resting in the same group share same |
| A. | physical properties |
| B. | chemical properties |
| C. | special properties |
| D. | bonding properties |
| Answer» C. special properties | |
| 114. |
Chalk consists of |
| A. | calcium |
| B. | carbon dioxide |
| C. | oxygen |
| D. | all of them |
| Answer» E. | |
| 115. |
The process in which food substances are moved to rest of the plant by 'phloem' is known as |
| A. | transpiration |
| B. | translocation |
| C. | respiration |
| D. | photosynthesis |
| Answer» C. respiration | |
| 116. |
The rate of transpiration slows down when plant |
| A. | withers |
| B. | wilts |
| C. | dies |
| D. | grows |
| Answer» C. dies | |
| 117. |
The contents that a plant uses to make food, are |
| A. | water and mineral salts |
| B. | mineral salts and oxygen |
| C. | water, mineral salts and carbon dioxide |
| D. | water and oxygen |
| Answer» D. water and oxygen | |
| 118. |
The percentage of transpiration by stomata is |
| A. | 0.2 |
| B. | 0.5 |
| C. | 0.75 |
| D. | 0.9 |
| Answer» E. | |
| 119. |
Processes that do not require energy for the movement of particles are |
| A. | diffusion and free transport |
| B. | osmosis and active transport |
| C. | diffusion and osmosis |
| D. | diffusion and active transport |
| Answer» D. diffusion and active transport | |
| 120. |
The acid which is used to make fizzy drinks, is |
| A. | citrus acid |
| B. | acetic acid |
| C. | citric acid |
| D. | carbonic acid |
| Answer» E. | |
| 121. |
The solution which is commonly used for cooking, drinking, washing, bathing and cleaning, is |
| A. | water |
| B. | solvents |
| C. | clay |
| D. | fluids |
| Answer» B. solvents | |
| 122. |
Solute is not dissolved when it is added to |
| A. | solvent |
| B. | solution |
| C. | mixture |
| D. | reaction |
| Answer» B. solution | |
| 123. |
Examples of alkalis include |
| A. | aqueous ammonia |
| B. | sodium hydroxide |
| C. | calcium hydroxide |
| D. | all of them |
| Answer» E. | |
| 124. |
The solute is broken apart in to smaller particles and mixed evenly upon adding it to |
| A. | solvent |
| B. | solution |
| C. | mixture |
| D. | all of them |
| Answer» B. solution | |
| 125. |
Burning of fossils fuel results in the production of |
| A. | bio gas |
| B. | oxygen |
| C. | carbon dioxide |
| D. | nitrogen |
| Answer» D. nitrogen | |
| 126. |
If baking soda or fruit salt is mixed with vinegar, there takes place a |
| A. | chemical reaction |
| B. | physical reaction |
| C. | transference |
| D. | both a and b |
| Answer» B. physical reaction | |
| 127. |
Chemical changes are |
| A. | reversible |
| B. | irreversible |
| C. | interchangeable |
| D. | non interchangeable |
| Answer» C. interchangeable | |
| 128. |
The conservation of mass is obtained when the total mass of reactants is equal to total mass of |
| A. | products |
| B. | molecules |
| C. | protons |
| D. | atoms |
| Answer» B. molecules | |
| 129. |
Chalk, limestone, marble, eggshells and seashells are made of |
| A. | calcium hydroxide |
| B. | calcium oxide |
| C. | calcium carbonate |
| D. | calcium chloride |
| Answer» D. calcium chloride | |
| 130. |
The light of Proxima Centauri reaches the earth in |
| A. | 4 years |
| B. | 4.2 years |
| C. | 2 years |
| D. | 365 days |
| Answer» C. 2 years | |
| 131. |
Phases of appearance of moon are caused by the movement of moon around the |
| A. | sun |
| B. | earth |
| C. | planets |
| D. | stars |
| Answer» C. planets | |
| 132. |
Planets are non luminous and revolve around the sun in elliptical |
| A. | orbit |
| B. | axis |
| C. | path |
| D. | circle |
| Answer» B. axis | |
| 133. |
Regions close to equator round the year experience |
| A. | warmth |
| B. | cold |
| C. | mild |
| D. | snow |
| Answer» B. cold | |
| 134. |
Due to less concentrated energy, the regions that are away from equator do not have much |
| A. | warmth |
| B. | saltish water |
| C. | seasonal cycle |
| D. | wet lands |
| Answer» C. seasonal cycle | |
| 135. |
To make sure that animals could get enough of what they need to survive, they have to |
| A. | compete |
| B. | survive |
| C. | reproduce |
| D. | grow bigger |
| Answer» B. survive | |
| 136. |
White coat of polar bears helps them to |
| A. | camouflage |
| B. | look big |
| C. | dry faster |
| D. | stay healthy |
| Answer» B. look big | |
| 137. |
Two correct examples of a habitat are |
| A. | streams and caves |
| B. | Ponds and deserts |
| C. | Water and air |
| D. | Grass and den |
| Answer» B. Ponds and deserts | |
| 138. |
Small creatures that breakdown decayed matter into further smaller pieces are called |
| A. | scavengers |
| B. | detritivores |
| C. | primary consumers |
| D. | primary producers |
| Answer» C. primary consumers | |
| 139. |
The other link in a food chain besides producer is known as |
| A. | consumer |
| B. | scavenger |
| C. | decomposer |
| D. | all of them |
| Answer» B. scavenger | |
| 140. |
In clean air, percentage of oxygen is |
| A. | 0.07 |
| B. | 0.1 |
| C. | 0.15 |
| D. | 0.17 |
| Answer» B. 0.1 | |
| 141. |
The techniques which help to separate mixtures, involve |
| A. | filtration |
| B. | distillation |
| C. | chromatography |
| D. | all of them |
| Answer» E. | |
| 142. |
The point at which solid substance changes into liquid state, is called |
| A. | melting point |
| B. | boiling point |
| C. | power point |
| D. | complex point |
| Answer» B. boiling point | |
| 143. |
Alloys include |
| A. | steel |
| B. | brass |
| C. | bronze |
| D. | all of them |
| Answer» E. | |
| 144. |
When salt is mixed into water it becomes |
| A. | element |
| B. | compound |
| C. | mixture |
| D. | solute |
| Answer» C. mixture | |
| 145. |
Like light and heat, radio waves can also travel through |
| A. | water |
| B. | solids |
| C. | sand |
| D. | vacuum |
| Answer» E. | |
| 146. |
Fire fighters use thermal image cameras to identify |
| A. | the spread of fire |
| B. | the source of fire |
| C. | the heat released by fire |
| D. | the temperature of fire |
| Answer» C. the heat released by fire | |
| 147. |
"Thermos" was invented by a |
| A. | French scientist |
| B. | Spanish scientist |
| C. | American scientist |
| D. | Scottish scientist |
| Answer» E. | |
| 148. |
Majority of the people wear white or light colored clothes in summer, because light colors |
| A. | s |
| B. | reflect less heat |
| C. | reflect more heat |
| D. | transfer less heat |
| Answer» D. transfer less heat | |
| 149. |
The stopper is made up of |
| A. | metal |
| B. | transition metal |
| C. | good insulator of heat |
| D. | poor insulator of heat |
| Answer» D. poor insulator of heat | |
| 150. |
A modern model of an atom shows that electrons are present outside nucleus in the region of high |
| A. | probability |
| B. | velocity |
| C. | speed |
| D. | energy level |
| Answer» B. velocity | |