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.
| 301. |
In best water treatment works, water is pumped from |
| A. | lakes |
| B. | rivers |
| C. | oceans |
| D. | reservoirs |
| Answer» E. | |
| 302. |
Desalinated and distilled water is mostly used in |
| A. | North America |
| B. | South America |
| C. | Middle East |
| D. | East Asia |
| Answer» D. East Asia | |
| 303. |
The maximum percentage of water in a plant or animal is |
| A. | 0.99 |
| B. | 0.75 |
| C. | 0.8 |
| D. | 0.5 |
| Answer» B. 0.75 | |
| 304. |
When people do not have enough water for washing hands and body, a disease is spread. This disease is known as |
| A. | water born disease |
| B. | water washed disease |
| C. | water related disease |
| D. | anti water disease |
| Answer» C. water related disease | |
| 305. |
'Trachoma' is a disease of eyes that spreads in |
| A. | cold and wet climate |
| B. | cold and dry climate |
| C. | hot and wet climate |
| D. | hot and dry climate |
| Answer» E. | |
| 306. |
Under the ground, water can be found in the form of |
| A. | streams |
| B. | ice |
| C. | snow |
| D. | rocks |
| Answer» B. ice | |
| 307. |
The color of water is |
| A. | blue |
| B. | green |
| C. | white |
| D. | none |
| Answer» E. | |
| 308. |
After the water has been filtered and cleaned, it is pumped into |
| A. | roof tanks |
| B. | storage tanks |
| C. | petroleum tanks |
| D. | streams |
| Answer» C. petroleum tanks | |
| 309. |
Fresh water can be found in |
| A. | lakes and streams |
| B. | seas and oceans |
| C. | seas and rivers |
| D. | oceans and rivers |
| Answer» B. seas and oceans | |
| 310. |
Water is broken down into hydrogen and oxygen by the process of |
| A. | decomposition |
| B. | evaporation |
| C. | distillation |
| D. | filtration |
| Answer» B. evaporation | |
| 311. |
The simplest electrical circuit use |
| A. | one wire |
| B. | two wires |
| C. | three wires |
| D. | four wires |
| Answer» C. three wires | |
| 312. |
The larger the current, the |
| A. | greater the flow of electrons |
| B. | lesser the flow of electrons |
| C. | greater the flow of protons |
| D. | lesser the flow of protons |
| Answer» B. lesser the flow of electrons | |
| 313. |
The magnetic compass was invented during Han dynasty in China, in |
| A. | 602 BC |
| B. | 206 BC |
| C. | 216 BC |
| D. | 612 BC |
| Answer» C. 216 BC | |
| 314. |
Bulb glows more brightly because of the use of two cells parallel and |
| A. | provision of more voltage |
| B. | push of more current with high energy |
| C. | provision of more resistance |
| D. | provision of less resistance |
| Answer» C. provision of more resistance | |
| 315. |
Comets and other objects circling around the sun is known as |
| A. | galaxy |
| B. | solar system |
| C. | milky way |
| D. | cluster |
| Answer» C. milky way | |
| 316. |
Radio waves coming from space were first detected in |
| A. | 1938 |
| B. | 1921 |
| C. | 1931 |
| D. | 1936 |
| Answer» D. 1936 | |
| 317. |
In space besides stars, there is also a huge capacity of dust and |
| A. | asteroids |
| B. | meteoroids |
| C. | gases |
| D. | vacuum |
| Answer» D. vacuum | |
| 318. |
Sun is also called |
| A. | yellow star |
| B. | blue giant |
| C. | red supergiant |
| D. | white dwarf |
| Answer» B. blue giant | |
| 319. |
All large telescopes that are used around the world, are |
| A. | Radio telescopes |
| B. | Reflecting telescopes |
| C. | Refracting telescopes |
| D. | Hubble telescope |
| Answer» C. Refracting telescopes | |
| 320. |
All veins carry deoxygenated blood except |
| A. | renal vein |
| B. | hepatic vein |
| C. | mesenteric vein |
| D. | pulmonary vein |
| Answer» E. | |
| 321. |
Excessive amount of glucose is passed out from body with |
| A. | feces |
| B. | sweat |
| C. | breathing |
| D. | urine |
| Answer» E. | |
| 322. |
White blood cells live long because they have |
| A. | centrioles |
| B. | white color |
| C. | nucleus |
| D. | cell membrane |
| Answer» D. cell membrane | |
| 323. |
A pigment in red blood cells which makes the color of blood "Red" is known as |
| A. | plasma |
| B. | hemoglobin |
| C. | fibrin |
| D. | fibrinogen |
| Answer» C. fibrin | |
| 324. |
When pace of heartbeat is not steady in the presence of a pacemaker |
| A. | pacemaker may be faulty |
| B. | it may be viral steadiness |
| C. | it may be weakness of heart |
| D. | it may be infected |
| Answer» B. it may be viral steadiness | |
| 325. |
The chemical formula of ethene is |
| A. | C2H4 |
| B. | C2H3 |
| C. | CH2 |
| D. | C3H6 |
| Answer» B. C2H3 | |
| 326. |
If magnesium is gently heated, it forms |
| A. | magnesium oxide |
| B. | magnesium sulfide |
| C. | magnesium nitrite |
| D. | magnesium carbonate |
| Answer» B. magnesium sulfide | |
| 327. |
The color of copper sulfate crystals is |
| A. | black |
| B. | blue |
| C. | orange |
| D. | white |
| Answer» C. orange | |
| 328. |
'Methane' is an example of |
| A. | carbohydrates |
| B. | hydrocarbons |
| C. | alcohols |
| D. | alkenes |
| Answer» C. alcohols | |
| 329. |
Ethene dichloride splits up to form |
| A. | dichloride gas |
| B. | vinyl ethene gas |
| C. | vinyl chloride gas |
| D. | diethene gas |
| Answer» D. diethene gas | |
| 330. |
Oxygen rich air is used for |
| A. | scuba diving |
| B. | patients with breathing problems |
| C. | cancer treatment |
| D. | both a and b |
| Answer» E. | |
| 331. |
Mixtures are not |
| A. | pure |
| B. | single element |
| C. | chemical combination |
| D. | both a and b |
| Answer» E. | |
| 332. |
When different gases are mixed together to form air, there is |
| A. | chemical reaction |
| B. | no chemical reaction |
| C. | no physical reaction |
| D. | both chemical and physical reaction |
| Answer» C. no physical reaction | |
| 333. |
Alloys are impure and they make elements more |
| A. | strong |
| B. | hard |
| C. | soft |
| D. | both a and b |
| Answer» D. both a and b | |
| 334. |
A separation technique which is used to obtain liquid from a solution by heating, is called |
| A. | fractional distillation |
| B. | filtration |
| C. | evaporation |
| D. | distillation |
| Answer» E. | |
| 335. |
The right sequence of a food chain is |
| A. | grass, cheetah and rabbit |
| B. | rabbit, grass and cheetah |
| C. | cheetah, rabbit and grass |
| D. | grass, rabbit and cheetah |
| Answer» E. | |
| 336. |
The main source of energy for a food chain is |
| A. | Producers |
| B. | Soil |
| C. | Fertilizers |
| D. | Sun |
| Answer» E. | |
| 337. |
To make food, plants need |
| A. | oxygen and water |
| B. | oxygen and glucose |
| C. | carbon dioxide and glucose |
| D. | carbon dioxide, water and sunlight |
| Answer» E. | |
| 338. |
Some predators prey at night like |
| A. | bears |
| B. | antelopes |
| C. | owls |
| D. | eagles |
| Answer» D. eagles | |
| 339. |
Animals that depend on producers are known as |
| A. | producers |
| B. | primary consumers |
| C. | secondary consumers |
| D. | tertiary consumers |
| Answer» C. secondary consumers | |
| 340. |
The positively charged particles of an atom are called |
| A. | protons |
| B. | neutrons |
| C. | electrons |
| D. | charges |
| Answer» B. neutrons | |
| 341. |
An atom's model that the atom is composed of electrons surrounded by a group of positive charge to balance the electrons' negative charges is called |
| A. | Thomson's Model |
| B. | Rutherford's Model |
| C. | Dalton's Model |
| D. | Bohr's Model |
| Answer» B. Rutherford's Model | |
| 342. |
Electrons orbiting around nucleus bear |
| A. | positive charge |
| B. | negative charge |
| C. | no charge |
| D. | neutral charge |
| Answer» C. no charge | |
| 343. |
The number of protons and electrons in an atom is |
| A. | different |
| B. | same |
| C. | average |
| D. | constant |
| Answer» C. average | |
| 344. |
Dalton's model of atom states that an atom is |
| A. | very small |
| B. | hard sphere |
| C. | indivisible |
| D. | all of above |
| Answer» E. | |
| 345. |
During chemical reaction, energy is |
| A. | taken in |
| B. | given out |
| C. | given out or taken in |
| D. | transferred |
| Answer» D. transferred | |
| 346. |
Ammonia fertilizers are made by two components, they are |
| A. | ammonia and hydrogen |
| B. | ammonia and nitric acid |
| C. | nitrogen and hydrogen |
| D. | nitrogen and water |
| Answer» C. nitrogen and hydrogen | |
| 347. |
The color of magnesium oxide is |
| A. | white |
| B. | blue |
| C. | grey |
| D. | pink |
| Answer» B. blue | |
| 348. |
When particles cool down, energy changes |
| A. | from kinetic to heat |
| B. | from kinetic to potential |
| C. | from potential to kinetic |
| D. | from thermal to potential |
| Answer» C. from potential to kinetic | |
| 349. |
To make PVC, molecules of vinyl chloride are |
| A. | condensed |
| B. | further heated |
| C. | treated with ammonia |
| D. | gathered to form a chain |
| Answer» E. | |
| 350. |
One carbon atom and one oxygen atom are combined together to form a molecule of |
| A. | oxygen |
| B. | water |
| C. | carbon dioxide |
| D. | carbon monoxide |
| Answer» E. | |