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MCQOPTIONS
This section includes 2637 Mcqs, each offering curated multiple-choice questions to sharpen your 7th Class knowledge and support exam preparation. Choose a topic below to get started.
| 2301. |
Which of the following is the primary source of water? |
| A. | Surface water |
| B. | Ground water |
| C. | Rainwater |
| D. | All of these |
| Answer» D. All of these | |
| 2302. |
The impurities present in sewage may consist of |
| A. | organic substances |
| B. | inorganic substances |
| C. | Nutrients |
| D. | All of the above |
| Answer» E. | |
| 2303. |
When waste water is passed through bar screens in WWTP, it removes |
| A. | plastic packets |
| B. | sand |
| C. | grit |
| D. | All of the above |
| Answer» B. sand | |
| 2304. |
Select the one that is incorrect for vermin processing toilet. |
| A. | It is a new method and has been recently tested in India. |
| B. | It is a novel, low water use toilet that is safe for processing of human waste |
| C. | In it the human excreta is treated by round worms and cockroaches |
| D. | In it the human excreta is completely converted to vermi-cakes |
| Answer» D. In it the human excreta is completely converted to vermi-cakes | |
| 2305. |
Aeration of water during waste water treatment removes |
| A. | Bacteria |
| B. | Germs |
| C. | Human Waste |
| D. | Sand |
| Answer» D. Sand | |
| 2306. |
DIRECTIONS: Read the passage given below and answer the questions that follow. Passage - 3 Poor sanitation and contaminated drinking water is a cause of large number of diseases. To improve sanitation, low cost on-site sewage disposal systems are being encouraged. Various water borne diseases are |
| A. | hepatitis |
| B. | meningitis |
| C. | cholera |
| D. | All of these |
| Answer» E. | |
| 2307. |
The impurities present in sewage are called__. |
| A. | Contaminants |
| B. | Grit |
| C. | Organic |
| D. | Inorganic |
| Answer» B. Grit | |
| 2308. |
DIRECTIONS: Read the passage given below and answer the questions that follow. Passage - 3 Poor sanitation and contaminated drinking water is a cause of large number of diseases. To improve sanitation, low cost on-site sewage disposal systems are being encouraged. Untreated human excreta is a health hazard because it may cause |
| A. | water pollution |
| B. | soil pollution |
| C. | Both the above |
| D. | None of these |
| Answer» D. None of these | |
| 2309. |
Which plant is suggested for purification of sewage pond water? |
| A. | waste water plant |
| B. | Eucalyptus plant |
| C. | urena plant |
| D. | None of these |
| Answer» C. urena plant | |
| 2310. |
DIRECTIONS: Read the following two statements carefully and choose the correct options. (i) Wastes released by houses is called sewage (ii) Waste that originates from kitchen is called sludge |
| A. | Statement (i) is correct while statement (ii) is incorrect. |
| B. | Statement (ii) is correct while statement (i) is incorrect. |
| C. | Both statements are correct. |
| D. | Both statements are incorrect. |
| Answer» D. Both statements are incorrect. | |
| 2311. |
By providing clean water and sanitation to the poorest people on the planet, we can reduce poverty and suffering and ensure education for all children. The above words are given by: |
| A. | UNO |
| B. | UNESCO |
| C. | WHO |
| D. | UNICEF |
| Answer» E. | |
| 2312. |
Which of the following are non-biodegradable wastes? |
| A. | Paper |
| B. | Vegetables |
| C. | Wood |
| D. | Polythene |
| Answer» E. | |
| 2313. |
Breeding place for mosquito flies which cause diseases are |
| A. | Oil |
| B. | Open drain |
| C. | Close tank |
| D. | None of these |
| Answer» C. Close tank | |
| 2314. |
DIRECTIONS: Read the passage given below and answer the questions that follow. Passage - 2 There are various steps involved in the treatment of polluted water before it can be made fit for human consumption. Which is the second step? |
| A. | Chlorination |
| B. | Aeration |
| C. | Filtration |
| D. | Flocculation |
| Answer» D. Flocculation | |
| 2315. |
DIRECTIONS: Read the following two statements carefully and choose the correct options. (i) Wastes that originates from industrial and commercial organizations are called sludge. (ii) House waste that comes from kitchen is called food waste. (iii) Sewage waste does not cause water pollution. |
| A. | Statements (i) and (iii) are incorrect but (ii) is correct. |
| B. | Statements (i) and (ii) are incorrect but (iii) is correct. |
| C. | All statements are correct. |
| D. | All statements are incorrect. |
| Answer» E. | |
| 2316. |
DIRECTION:Carefullyobserve pictures given below and answer the following questions.Lookat the above diagram of sewage treatment plant and answer the questions thatfollow. What is clear water known as? |
| A. | Clarified water |
| B. | Polluted water |
| C. | Freshwater |
| D. | Slurry |
| Answer» B. Polluted water | |
| 2317. |
Which one of the following statements is correct? Statement 1: An underground pipe which carries away dirty drainage water is called sewer. Statement 2: The wastewater treatment plant is also called sewage treatment plant. |
| A. | Statement 1 |
| B. | Statement 2 |
| C. | Both statements are correct |
| D. | Both statements are incorrect |
| Answer» D. Both statements are incorrect | |
| 2318. |
Pulmonary ____ carries _____ rich blood from the heart to the lungs and pulmonary ____ carries ____ rich blood from the lungs to the heart.Select the option that correctly fills up the blank spaces in the above passage. |
| A. | Vein, Carbon dioxide, Artery, Oxygen |
| B. | Vein, Oxygen, Artery, Carbon dioxide |
| C. | Artery, Carbon dioxide, Vein, Oxygen |
| D. | Artery, Oxygen, Vein, Carbon dioxide |
| Answer» D. Artery, Oxygen, Vein, Carbon dioxide | |
| 2319. |
Select the incorrect match. (i) Ammonotelism- Sponges, Hydra, Cartilaginous fish, Leech, Crocodile (ii) Ureotelism- Frogs, Toads, Bony fish, Turtles, Man (iii) Uricotelism- Cockroach, Pigeon, Beetle, Lizard, Snake |
| A. | (i) and (ii) only |
| B. | (ii) and (iii) only |
| C. | (iii) only |
| D. | (i), (ii) and (iii) |
| Answer» B. (ii) and (iii) only | |
| 2320. |
The part labelled X in the given diagram helps plants to ___. (i) take in oxygen (ii) take in water vapour (iii) Give out oxygen (iv) give out water vapour |
| A. | (i) and (ii) only |
| B. | (i) and (iii) only |
| C. | (ii) and (iii) only |
| D. | (i), (iii) and (iv) only |
| Answer» E. | |
| 2321. |
Consider the following statements. Select the option which correctly identifies true (T) and false (F) ones.(i) The valve between left and right atrium allow the blood to flow only in one direction.(ii) The contents of phloem can move only in the upward direction whereas water in xylem moves both in the upward and downward directions.(iii) A healthy adult man excretes an; average of 1.5 litres of urine every day.(iv) Red blood cells are the biconcave, disc shaped structures filled with haemoglobin. |
| A. | (i)(ii)(iii)(iv)FFTT |
| B. | (i)(ii)(iii)(iv)TFTT |
| C. | (i)(ii)(iii)(iv)FTTF |
| D. | (i)(ii)(iii)(iv)FFTF |
| Answer» B. (i)(ii)(iii)(iv)TFTT | |
| 2322. |
Study the characteristics given below. P - A thick walled vessel that carries oxygenated blood Q - A thin walled vessel that carries deoxygenated blood R - Very small thin tubes that connects veins and arteries Which of these statements represent P, Q and R is correct? |
| A. | Artery Capillary Vein R P Q |
| B. | Artery Capillary Vein P R Q |
| C. | Artery Capillary Vein Q R P |
| D. | Artery Capillary Vein P Q R |
| Answer» C. Artery Capillary Vein Q R P | |
| 2323. |
Which of the following sequences is correct about the flow of blood in the heart? P - Left ventricle Q - Right ventricle R - Lungs S - Left atrium T - Right atrium |
| A. | \[P\to Q\to R\to T\to S\] |
| B. | \[R\to Q\to P\to S\to \] |
| C. | \[P\to R\to Q\to S\to T\] |
| D. | \[T\to Q\to R\to S\to P\] |
| Answer» E. | |
| 2324. |
Which of the following options represents the composition of blood? |
| A. | Blood vessels, platelets and red blood cells only. |
| B. | Plasma, red blood cells, white blood cells and platelets only. |
| C. | Red blood cells, white blood cells and blood platelets only. |
| D. | Plasma, red blood cells and white blood cells only. |
| Answer» C. Red blood cells, white blood cells and blood platelets only. | |
| 2325. |
Which is the characteristic feature of arteries? |
| A. | Blood cannot flow backwards. |
| B. | Blood can flow through easily. |
| C. | Blood can be pumped to every part of the body. |
| D. | Artery can withstand the high pressure of the heartbeat. |
| Answer» E. | |
| 2326. |
The diagram below shows materials needed for survival being transported inside a plant. Which body system performs this function in humans? |
| A. | Circulatory system |
| B. | Digestive system |
| C. | Excretory system |
| D. | Respiratory system |
| Answer» B. Digestive system | |
| 2327. |
Which labelled blood vessels carry blood to and from the lungs? |
| A. | Blood to lungs Blood from lungs 1 3 |
| B. | Blood to lungs Blood from lungs 1 4 |
| C. | Blood to lungs Blood from lungs 2 3 |
| D. | Blood to lungs Blood from lungs 2 4 |
| Answer» E. | |
| 2328. |
What is the function of red blood cells? |
| A. | Transports oxygen |
| B. | Transports water |
| C. | Fight against germs |
| D. | Helps in blood clotting |
| Answer» B. Transports water | |
| 2329. |
DIRECTION: Match Column I with column II and select the correct answers using the code given below the columns Column-I Column-II (A) xylem (p) companion cells (B) phloem (q) root hairs (C) Stomata (r) tracheid?s (D) Root (s) guard cells |
| A. | (A) \[\to \] (s), (B) \[\to \] (r), (C) \[\to \] (p), (D) \[\to \] (q) |
| B. | (A) \[\to \] (r), (B) \[\to \] (p), (C) \[\to \] (s), (D) \[\to \] (q) |
| C. | (A) \[\to \] (q), (B) \[\to \] (s), (C) \[\to \] (r), (D) \[\to \] (p) |
| D. | (A) \[\to \] (p), (B) \[\to \] (q), (C) \[\to \] (s), (D) \[\to \] (r) |
| Answer» C. (A) \[\to \] (q), (B) \[\to \] (s), (C) \[\to \] (r), (D) \[\to \] (p) | |
| 2330. |
An elongated, tube like dead cell with thick and lignified wall which possess large cell cavity. |
| A. | plasmodesmata |
| B. | Tracheid?s |
| C. | xylem vessel |
| D. | sieve tube |
| Answer» C. xylem vessel | |
| 2331. |
These have thin and elastic walls- |
| A. | Arteries |
| B. | Veins |
| C. | Capillaries |
| D. | Superior vena cava |
| Answer» C. Capillaries | |
| 2332. |
DIRECTIONS: On the basis of following diagram/ picture answer the questions given below: A stick of celery is left in a beaker containing a solution of blue food colouring. After two days, the celery is taken out and it is seen that parts of the celery have turned blue. What is the name given to the blue part of the plant? |
| A. | Phloem |
| B. | Leaf |
| C. | Stomata |
| D. | Xylem |
| Answer» E. | |
| 2333. |
DIRECTIONS: Read the following two statements carefully and choose the correct options. (i) In unicellular organisms transportation occur by diffusion and streaming movements of the cytoplasm. (ii) Humans beings transport nutrients, gases etc. by blood. |
| A. | Statement (i) is correct while statement (ii) is incorrect. |
| B. | Statement (ii) is correct while statement (i) is incorrect. |
| C. | Both statements are correct |
| D. | Both statements are incorrect. |
| Answer» D. Both statements are incorrect. | |
| 2334. |
DIRECTIONS: Read the Passage (s) given below and answer the questions that follow. Passage - 4 The main organ of the human excretory system through which waste material is eliminated from the body is kidney. Which of the following is used as artificial kidney in kidney failure patients? |
| A. | Dialysis |
| B. | Filter |
| C. | Angiogram |
| D. | Ventilation |
| Answer» B. Filter | |
| 2335. |
DIRECTIONS: Read the Passage (s) given below and answer the questions that follow. Passage - 2 Plants have pipe-like vessels made up of special cells, forming the vascular tissues, for transport of water and nutrients from the soil. These vascular tissues are called xylem. The transportation of food is done by vascular tissues called phloem. Which of the following are involved in transport of substances in plants? |
| A. | Xylem |
| B. | Phloem |
| C. | both of these |
| D. | none of these |
| Answer» D. none of these | |
| 2336. |
DIRECTIONS: Match column I with column II and select the correct answer using the code given below the columns Column - I Column - II (A) Plasma (i) Blood vessel (B) Hemoglobin (ii) fluid part of blood (C) Platelets (iii) Binds with oxygen and transports it to all parts of the body (D) Artery (iv) help in formation of clot |
| A. | (A) \[\to \] (i), (B) \[\to \] (ii), (C) \[\to \] (iii), (D) \[\to \] (iv) |
| B. | (A) \[\to \] (ii), (B) \[\to \] (iii), (C) \[\to \] (iv), (D) \[\to \] (i) |
| C. | (A) \[\to \] (iii), (B) \[\to \] (iv), (C) \[\to \] (i), (D) \[\to \] (ii) |
| D. | (A) \[\to \] (iv), (B) \[\to \] (i), (C) \[\to \] (ii), (D) \[\to \] (iii) |
| Answer» D. (A) \[\to \] (iv), (B) \[\to \] (i), (C) \[\to \] (ii), (D) \[\to \] (iii) | |
| 2337. |
Cardiovascular system is also known as |
| A. | Digestive system |
| B. | Excretory system |
| C. | Circulatory system |
| D. | Nervous system |
| Answer» D. Nervous system | |
| 2338. |
It generates a force which pulls up water absorbed by the roots from the soil to reach the stem and leaves. It is |
| A. | transpiration |
| B. | transportation |
| C. | stomata |
| D. | none of these |
| Answer» B. transportation | |
| 2339. |
The greatest effort of the heart is exerted by the |
| A. | right auricle |
| B. | right ventricle |
| C. | left auricle |
| D. | left ventricle |
| Answer» E. | |
| 2340. |
The heart rate of an adult is |
| A. | 60-65 per minute |
| B. | 70-80 per minute |
| C. | 40-60 per minute |
| D. | none of these |
| Answer» C. 40-60 per minute | |
| 2341. |
The transportation of water takes place through a large spaced potato cavity filled with sugar solution placed in a dish containing small amount of water? |
| A. | Xylem |
| B. | Phloem |
| C. | through movement of one cell to another |
| D. | none of these |
| Answer» D. none of these | |
| 2342. |
The clotting of blood is to |
| A. | Slow down the movement of blood inside the blood vessel. |
| B. | trap oxygen inside the blood so that it may be transported more easily. |
| C. | seal up wounds to avoid loss of blood |
| D. | all the above are correct |
| Answer» D. all the above are correct | |
| 2343. |
DIRECTIONS: The questions in this segment consists of two statements, one labeled as ?Assertion A? and the other labeled as ?Reason R?. You are to examine these two statements carefully and decide if the Assertion A and Reason R are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below. Assertion (A): water absorbed by roots from the soil reaches the top of all trees. Reason (R): The force generated during transpiration helps to pull the water up. |
| A. | Both A and R are true and R is the correct explanation of A. |
| B. | Both A and R are true but R is not the correct explanation of A, |
| C. | A is true but R is false. |
| D. | A is false but R is true. |
| Answer» B. Both A and R are true but R is not the correct explanation of A, | |
| 2344. |
DIRECTIONS: The questions in this segment consists of two statements, one labeled as ?Assertion A? and the other labeled as ?Reason R?. You are to examine these two statements carefully and decide if the Assertion A and Reason R are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below. Assertion (A): Circulatory system consists of the heart, the lungs and blood vessels. Reason (R): Blood is a fluid which flows in blood vessels. |
| A. | Both A and R are true and R is the correct explanation of A. |
| B. | Both A and R are true but R is not the correct explanation of A. |
| C. | A is true but R is false. |
| D. | A is false but R is true. |
| Answer» C. A is true but R is false. | |
| 2345. |
The aroma of food comes from the kitchen because of- |
| A. | Osmosis |
| B. | Diffusion |
| C. | Convection |
| D. | Fragmentation |
| Answer» C. Convection | |
| 2346. |
Look at the following graph carefully and find the acceleration of the moving body. |
| A. | 0 m/s2 |
| B. | 1 m/s2 |
| C. | 2 m/s2 |
| D. | 3 m/s2 |
| Answer» C. 2 m/s2 | |
| 2347. |
Look at the following graph The above graph shows that the object is in |
| A. | Rest |
| B. | Motion |
| C. | Uniform motion |
| D. | Uniform acceleration |
| Answer» B. Motion | |
| 2348. |
An object may be in the rest as well as in the motion in the same time'. Which one of the following is correct explanation for the above statement? |
| A. | Rest and motion are defined on basis of position of an object. So a body may be in rest and in the motion at the same time |
| B. | Object is in rest or in motion depends on the reference point. An object may be in motion with respect to a reference point and at same time the object may be in rest with respect to another reference point. |
| C. | Rotatory motion justifies the above statement. In the rotatory motion, object rotates around a fixed axis and does not cover distance. Therefore, object is in motion and in the rest at the same time. |
| D. | No, it is not possible that an object is in the motion and in the rest as well. |
| Answer» C. Rotatory motion justifies the above statement. In the rotatory motion, object rotates around a fixed axis and does not cover distance. Therefore, object is in motion and in the rest at the same time. | |
| 2349. |
DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage-1 Which of the following statements about the motion of the squirrel is true? |
| A. | The squirrel moved with the greatest speed between 0 s and 5 s. |
| B. | The squirrel moved with the greatest speed between 8 s and 10s. |
| C. | The squirrel moved with a constant speed between 0 s and 8 s. |
| D. | The squirrel moved with a constant speed between 0 s and 5 s. |
| Answer» C. The squirrel moved with a constant speed between 0 s and 8 s. | |
| 2350. |
DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage-2 A walker follows the path from A to E (figure) over a 80s time interval. Now answer the following questions? What is the walker's average speed between A and E? |
| A. | 16 m/s |
| B. | 8 m/s |
| C. | 2 m/s |
| D. | 1 m/s |
| Answer» D. 1 m/s | |