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.
| 351. |
The number of oxygen atoms in glucose molecule is 6 and in hydrogen molecules is |
| A. | 6 |
| B. | 12 |
| C. | 18 |
| D. | 8 |
| Answer» C. 18 | |
| 352. |
Under STM, atoms can be |
| A. | observed |
| B. | manipulate |
| C. | transferred |
| D. | both a and b |
| Answer» D. both a and b | |
| 353. |
The number of atoms which a molecule of sulphur contains, is |
| A. | 3 |
| B. | 8 |
| C. | 4 |
| D. | 5 |
| Answer» C. 4 | |
| 354. |
The size of a single atom is |
| A. | 1nm |
| B. | 0.1nm |
| C. | 0.11nm |
| D. | 1.0nm |
| Answer» C. 0.11nm | |
| 355. |
A unit of electricity is called |
| A. | kilowatt |
| B. | joules-hour |
| C. | kilowatt-hour |
| D. | watt-minute |
| Answer» D. watt-minute | |
| 356. |
The voltage of a cell or battery can be measured by connecting a |
| A. | voltmeter |
| B. | thermometer |
| C. | kilometer |
| D. | galvanometer |
| Answer» B. thermometer | |
| 357. |
When pushbutton of a bell is pressed, electric current passes through the |
| A. | capacitor |
| B. | electromagnet |
| C. | resistor |
| D. | fuse |
| Answer» C. resistor | |
| 358. |
In series circuit electrons in the current when comes to second bulb after passing through the first, have |
| A. | more energy |
| B. | less energy |
| C. | more power |
| D. | less power |
| Answer» C. more power | |
| 359. |
Never use an appliance with |
| A. | handles |
| B. | bare wires |
| C. | resistor |
| D. | fuse |
| Answer» C. resistor | |
| 360. |
When atria contracts, ventricles |
| A. | relax |
| B. | also contract |
| C. | squeeze |
| D. | block |
| Answer» B. also contract | |
| 361. |
'Plasma' contains water along with important |
| A. | food chemicals |
| B. | cells |
| C. | tissues |
| D. | bacteria |
| Answer» B. cells | |
| 362. |
A white blood cell is two times of a |
| A. | red blood cell |
| B. | platelet |
| C. | tissue cell |
| D. | none of above |
| Answer» B. platelet | |
| 363. |
Top two chambers of heart are known as |
| A. | atria |
| B. | ventricles |
| C. | upper chambers |
| D. | lower chambers |
| Answer» B. ventricles | |
| 364. |
"Hemoglobin "is a combination of |
| A. | carbohydrates and fats |
| B. | carbohydrates and proteins |
| C. | fats and proteins |
| D. | proteins and iron |
| Answer» E. | |
| 365. |
The dispersion can be noticed by passing a white light through |
| A. | glass |
| B. | mirror |
| C. | water |
| D. | prism |
| Answer» E. | |
| 366. |
Non luminous objects are colored by the process of |
| A. | color addition |
| B. | color subtraction |
| C. | color multiplication |
| D. | color division |
| Answer» C. color multiplication | |
| 367. |
The convex lens |
| A. | shrinks the image |
| B. | magnifies the image |
| C. | sharpens the image |
| D. | increases the contrast of the image |
| Answer» C. sharpens the image | |
| 368. |
We cannot see through |
| A. | transparent objects |
| B. | opaque objects |
| C. | luminous objects |
| D. | non luminous objects |
| Answer» C. luminous objects | |
| 369. |
If the angle of incidence at the far-edge is too large, the light would |
| A. | escape |
| B. | not escape |
| C. | end in the object |
| D. | spread into seven colors |
| Answer» C. end in the object | |
| 370. |
The disease in which deficiency of insulin occurs is known as |
| A. | diabetes |
| B. | cholesterol infection |
| C. | insulation |
| D. | glaciation |
| Answer» B. cholesterol infection | |
| 371. |
The number of chambers in a human heart is |
| A. | three |
| B. | four |
| C. | five |
| D. | six |
| Answer» C. five | |
| 372. |
If a person's wound does not cure or clot is not formed, he is suffering from |
| A. | hemophilia |
| B. | anemia |
| C. | thrombosis |
| D. | varicose veins |
| Answer» B. anemia | |
| 373. |
The heart locates a bit on the left side of the chest because |
| A. | it is on the left side |
| B. | the atria are tilted towards the left |
| C. | the ventricles are tilted towards the left |
| D. | the atria are tilted towards the right |
| Answer» D. the atria are tilted towards the right | |
| 374. |
When ventricles contract, atria |
| A. | relaxes |
| B. | also contracts |
| C. | squeezes |
| D. | blocks |
| Answer» B. also contracts | |
| 375. |
Glucose is chiefly required for |
| A. | photosynthesis |
| B. | respiration |
| C. | breathing |
| D. | digestion |
| Answer» C. breathing | |
| 376. |
The stomach can hold |
| A. | 1 liter food |
| B. | 2 liters food |
| C. | 1.5 liters food |
| D. | 2.5 liters |
| Answer» D. 2.5 liters | |
| 377. |
The digestive track runs from |
| A. | mouth to rectum |
| B. | mouth to anus |
| C. | gullet to stomach |
| D. | stomach to anus |
| Answer» C. gullet to stomach | |
| 378. |
Excessive carbohydrates are converted into |
| A. | fats and proteins |
| B. | fats only |
| C. | proteins only |
| D. | minerals |
| Answer» C. proteins only | |
| 379. |
The diameter of small intestine is |
| A. | 2 cm |
| B. | 3 cm |
| C. | 2 inch |
| D. | 3 inch |
| Answer» C. 2 inch | |
| 380. |
Sometimes, bulb does not light up even if the circuit is complete because the |
| A. | energy is low |
| B. | power is low |
| C. | resistance is high |
| D. | electric charges are insufficient |
| Answer» B. power is low | |
| 381. |
One of the causes of overloading is |
| A. | long circuit |
| B. | short circuit |
| C. | overloaded cables |
| D. | heavy circuit |
| Answer» C. overloaded cables | |
| 382. |
The wire coil is wound round the neck of a |
| A. | paper cone |
| B. | magnet |
| C. | bass tube |
| D. | mechanical magnet |
| Answer» B. magnet | |
| 383. |
Earth wire is a wire that |
| A. | is used to earth excess current |
| B. | insulates excess current |
| C. | diffuses excess current |
| D. | recharges voltage |
| Answer» B. insulates excess current | |
| 384. |
The loudspeaker changes the electric signals into |
| A. | light waves and heat |
| B. | heat and sound waves |
| C. | sound waves |
| D. | heat energy |
| Answer» D. heat energy | |
| 385. |
All the planets, moons, asteroids, comets and other bodies orbit around the |
| A. | comet |
| B. | meteoroids |
| C. | sun |
| D. | milky way |
| Answer» D. milky way | |
| 386. |
'Ulysses' has been sending information about |
| A. | outer surface of sun |
| B. | inner core of sun |
| C. | outer core of sun |
| D. | inner surface of sun |
| Answer» B. inner core of sun | |
| 387. |
A violent spinning ball of hot and burning gases is known as |
| A. | planet |
| B. | star |
| C. | galaxy |
| D. | cluster |
| Answer» C. galaxy | |
| 388. |
Blue and white stars are |
| A. | cold |
| B. | normal |
| C. | hot |
| D. | none of above |
| Answer» D. none of above | |
| 389. |
At the time of Egyptian astronomer Ptolemy, discovered constellations were |
| A. | 36 |
| B. | 40 |
| C. | 44 |
| D. | 48 |
| Answer» E. | |
| 390. |
The electricity passes through |
| A. | pipeline |
| B. | electricity meter |
| C. | power house |
| D. | generator |
| Answer» C. power house | |
| 391. |
If two bulbs are attached in parallel circuit, they would glow |
| A. | brightly |
| B. | dimly |
| C. | equally |
| D. | continuously |
| Answer» D. continuously | |
| 392. |
The presence of earth wire can reduce the danger of |
| A. | overloading |
| B. | overheating |
| C. | fire |
| D. | shock |
| Answer» E. | |
| 393. |
The more appliances in a parallel circuit, |
| A. | the less current in the circuit |
| B. | the more current in the circuit |
| C. | the less voltage in the circuit |
| D. | the more voltage in the circuit |
| Answer» C. the less voltage in the circuit | |
| 394. |
To measure the current, ammeter is connected in |
| A. | parallel |
| B. | series |
| C. | both a and b |
| D. | an electric circuit |
| Answer» C. both a and b | |
| 395. |
Stigma of wind pollinated flower is |
| A. | sticky |
| B. | feathery |
| C. | plain |
| D. | dry |
| Answer» C. plain | |
| 396. |
A part of plant that keeps on growing over the soil, making other small plants with penetrating roots in the soil and growing of shoots towards the light is known as |
| A. | tuber |
| B. | bud |
| C. | runner |
| D. | bulb |
| Answer» D. bulb | |
| 397. |
Insects pollinated flowers face |
| A. | upwards |
| B. | downwards |
| C. | left |
| D. | right |
| Answer» B. downwards | |
| 398. |
When seed is sown into soil, the first thing which happens it |
| A. | takes up water |
| B. | takes up oxygen |
| C. | bursts apart |
| D. | splits into two parts |
| Answer» B. takes up oxygen | |
| 399. |
The first part which comes out of a seed is |
| A. | radicle |
| B. | plumule |
| C. | stem |
| D. | cotyledon |
| Answer» B. plumule | |
| 400. |
Kites and fishing rods should not be used near |
| A. | houses |
| B. | power lines |
| C. | airports |
| D. | parks |
| Answer» C. airports | |