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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.
| 51. |
DIRECTIONS: Carefully observe pictures given below and answer the following questions. Elephant The animal shown above has a strong sense of smell. The part of the body of this animal that it uses as nose is called: |
| A. | tusk |
| B. | trunk |
| C. | skin |
| D. | none of these |
| Answer» C. skin | |
| 52. |
Select the type of cells, present in blood, whose main function is to fight against diseases by destroying harmful bacteria and other foreign material. |
| A. | RBC |
| B. | WBC |
| C. | Platelets |
| D. | none of these |
| Answer» C. Platelets | |
| 53. |
DIRECTIONS: Match Column-I with Column-II and select the correct answer using the codes given below the columns. Column-I Column-II (A) Anemometer (i) Caused by high speed wind and air pressure difference. (B) Cyclone (ii) Accompanied by reduced pressure. (C) Increased wind speed (iii) Instrument used to measure wind speed. (D) Wind movement (iv) Caused due to uneven heating on earth. |
| A. | (A) \[\to \] (iii), (B) \[\to \] (ii), (C) \[\to \] (i), (D) \[\to \] (iv) |
| B. | (A) \[\to \] (iii), (B) \[\to \] (i), (C) \[\to \] (ii), (D) \[\to \] (iv) |
| C. | (A) \[\to \] (iii), (B) \[\to \] (iv), (C) \[\to \] (i), (D) \[\to \] (ii) |
| D. | (A) \[\to \] (iii), (B) \[\to \] (ii), (C) \[\to \] (iv), (D) \[\to \] (i) |
| Answer» C. (A) \[\to \] (iii), (B) \[\to \] (iv), (C) \[\to \] (i), (D) \[\to \] (ii) | |
| 54. |
A student studied an animal and made the following observations. (i) Strong claws and broad hip girdles (ii) Spines to prevent grom slipping (iii) Ability to climb the trees Which of the following title best suits the above animals? |
| A. | Terrestrial |
| B. | Aquatic |
| C. | Amphibian |
| D. | arboreal |
| Answer» E. | |
| 55. |
Which of the following is not a type of wind? |
| A. | Trade winds |
| B. | Polar winds |
| C. | Westerly wind |
| D. | All the above |
| E. | None of these |
| Answer» F. | |
| 56. |
Winds moving from west to east in the middle latitudes between 30 and 60 degrees latitude are known as: |
| A. | Trade winds |
| B. | Polar winds |
| C. | Westerly winds |
| D. | Local winds |
| E. | None of these |
| Answer» D. Local winds | |
| 57. |
____ instrument is used to measure the amount of rain which falls. |
| A. | Richter scale |
| B. | Barometer |
| C. | Rain gauge |
| D. | Thermometer |
| E. | None of these |
| Answer» D. Thermometer | |
| 58. |
The organism in the given figure has a flattened body shape, This characteristic helps the organism to |
| A. | Survive for a long period without food |
| B. | Fly in the air |
| C. | Camouflage itself |
| D. | Crawl between crevices and spaces easily. |
| Answer» E. | |
| 59. |
The figure shows an instrument which is used to measure ______. |
| A. | Earthquake |
| B. | Rainfall |
| C. | Wind speed |
| D. | Relative humidity |
| Answer» C. Wind speed | |
| 60. |
Read the following statements. (i) In India, rain is mainly brought by two kinds of humidity-laden winds, ___ and ___. (ii) Scientists who study and predict weather are known as ___. (iii) The climate in Kerala is ___ and ____. Select the option which correctly fills the blanks in any two of these statements. |
| A. | (b) Geologists; (c) Hot, Dry |
| B. | (a) South-West monsoon, North-East monsoon; (c) Hot, Wet |
| C. | (a) South-East monsoon, North-West monsoon; (b) Meteorologists |
| D. | (a) South-East monsoon, North-West monsoon; (b) Geologists |
| Answer» C. (a) South-East monsoon, North-West monsoon; (b) Meteorologists | |
| 61. |
A region with dense vegetation of trees, shrubs, herbs and also a variety of animals like elephants, lions, birds, etc. is a: |
| A. | Temperate region |
| B. | Frigid region |
| C. | Coastal region |
| D. | Tropical region |
| E. | None of these |
| Answer» E. None of these | |
| 62. |
Tell the arrangement in which phloem is surrounded by a ring of xylem vessel. |
| A. | collateral |
| B. | Bicollateral |
| C. | Amphicrihral |
| D. | Amphivasal |
| Answer» E. | |
| 63. |
Which process can remove dirt and sand from waste water? |
| A. | Chlorination |
| B. | Sedimentation |
| C. | Flocculation |
| D. | Aeration |
| Answer» C. Flocculation | |
| 64. |
Which one of the following is the inorganic impurities present in sewage? |
| A. | Metals |
| B. | Urine |
| C. | Vegetable wastes |
| D. | Animal dung |
| E. | None of these |
| Answer» B. Urine | |
| 65. |
Percolation rate of water is highest in which of the following soils? |
| A. | Clay soil |
| B. | Sandy soil |
| C. | Humus |
| D. | Loamy soil |
| Answer» C. Humus | |
| 66. |
A fibrous, non-globular protein which is involved in the clotting mechanism- |
| A. | Anemia |
| B. | Hemophilia |
| C. | Leukemia |
| D. | Thrombophilia |
| Answer» C. Leukemia | |
| 67. |
Which soil is well aerated, light and dry? |
| A. | Sandy soil |
| B. | Clayey soil |
| C. | Loamy soil |
| D. | None of these |
| Answer» B. Clayey soil | |
| 68. |
Which of the following, if used regularly can kill germs in overhead storage tanks in our houses? |
| A. | Sand |
| B. | Chlorine tablets |
| C. | Chewable tablets |
| D. | Chalk powder |
| Answer» C. Chewable tablets | |
| 69. |
DIRECTIONS: Read the following two statements carefully and choose the correct options. (i) Ozone is used to disinfect water (ii) Chlorine is used to disinfect water |
| 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. | |
| 70. |
While studying the microbes found in pond water Jack gets a planaria and cuts it into two part, anterior and rest of the body part. After some days he notices that both the parts develops into two new Planarians. Which one of the following kind of reproduction is shown by the Planaria? |
| A. | Fission |
| B. | Spore formation |
| C. | Vegetative propagation |
| D. | Regeneration |
| E. | None of these |
| Answer» E. None of these | |
| 71. |
DIRECTIONS: On the basis of following diagram/ picture answer the questions given below: Three objects having same mass are placed as shown in figure. Which will have the maximum potential energy? |
| A. | A |
| B. | B |
| C. | C |
| D. | All three have same energy |
| Answer» D. All three have same energy | |
| 72. |
The given figure shows a turkey, a flightless bird. Why cannot a turkey fly? (i) It has underdeveloped(ii) It is too heavy.(iii) It has hollow bones, (iv) It has very few feathers. |
| A. | (ii) only |
| B. | (i) and (ii) only |
| C. | (ii) and (iv) only |
| D. | (i), (ii), (iii) and (iv) |
| Answer» C. (ii) and (iv) only | |
| 73. |
Pick the odd out from each series given below and select the correct option. (i) Elephant Monkey Red-eyed frog Polar bear (ii) Loud voice Bright colours Strong tails Wide and large paws (iii) Alaska Nigeria Canada Norway (iv) Humidity Rainfall Soil Wind speed |
| A. | I II III IV Polar bear Wide and large paws Nigeria Soil |
| B. | I II III IV Red eyed frog Loud voice Canada Wind speed |
| C. | I II III IV Polar bear Strong tails Alaska Rainfall |
| D. | I II III IV Red eyed frog Wide and large paws Alaska Humidity |
| Answer» B. I II III IV Red eyed frog Loud voice Canada Wind speed | |
| 74. |
_______ makes the soil porous and fertile. |
| A. | Centipedes |
| B. | Millepedes |
| C. | Beetles |
| D. | Earthworms |
| Answer» E. | |
| 75. |
A symbol above the arrow in a chemical reaction is used for the notation of heat energy added in the chemical reaction. Which one of the following symbol is used for the same? |
| A. | \[\partial \] |
| B. | \[\alpha \] |
| C. | \[\beta \] |
| D. | \[\Delta \] |
| E. | None of these |
| Answer» E. None of these | |
| 76. |
DIRECTIONS: Read the following three statements carefully and choose the correct option. Statement 1: Kinetic energy of a body is quadrupled, when its velocity is doubled. Statement 2: Kinetic energy is proportional to square of velocity. Statement 3: Kinetic energy is the energy of body due to its motion. |
| A. | Statement (1) and (3) are incorrect while statement (2) is correct. |
| B. | Statement (1) and (2) are incorrect while (3) is correct. |
| C. | All the statements are correct. |
| D. | All the statements are incorrect. |
| Answer» D. All the statements are incorrect. | |
| 77. |
Read the following statements. (i) Polar bears have two thick layers of fur, as well as a layer of fat under the skin. (ii) At the poles, there is six months of day and six months of night. (iii) The day-to-day conditions of the atmosphere at a place with regard to factors like temperature, humidity, rainfall, speed and direction of wind, etc., is called the climate of that place. (iv) Seals have a thick deposition of fat, called blubber that protects them from the cold. Which of these statements are correct? |
| A. | (i) and (ii) only |
| B. | (i), (iii) and (iv) only |
| C. | (i), (ii) and (iv) only |
| D. | All of these |
| Answer» D. All of these | |
| 78. |
In vermi-processing toilet the human excreta is treated by |
| A. | Redworm |
| B. | Tapeworm |
| C. | Earthworm |
| D. | Roundworm |
| Answer» D. Roundworm | |
| 79. |
How many times does the average adult heart beat per minute while at rest? |
| A. | 40 |
| B. | 120 |
| C. | 70 |
| D. | 90 |
| Answer» D. 90 | |
| 80. |
Which body part of an elephant are modified form of teeth. |
| A. | Legs |
| B. | Trunk |
| C. | Tusks |
| D. | Large ears |
| Answer» D. Large ears | |
| 81. |
Match the following: Column A Column B (i) Oxalic acid [A] Curd (ii) Acetic acid [B] Tamarind (iii) Tartaric acid [C] Spinach (iv) Lactic acid [D] Vinegar |
| A. | (i - C), (ii - D), (iii - A), (iv - B) |
| B. | (i - D), (ii - A), (iii - B), (iv - C) |
| C. | (i - C), (ii - D), (iii - B), (iv - A) |
| D. | (i - D), (ii - C) (iii - B), (iv - A) |
| E. | None of these |
| Answer» D. (i - D), (ii - C) (iii - B), (iv - A) | |
| 82. |
Which of the following components of blood help in blood clotting? |
| A. | Red blood cells |
| B. | Plasma |
| C. | White blood cells |
| D. | Platelets |
| Answer» E. | |
| 83. |
DIRECTIONS: Carefully observe pictures given below and answer the following questions. The following diagram that shows a part of water cycle and answer the following questions. The process 'X' is known as |
| A. | condensation |
| B. | evaporation |
| C. | melting |
| D. | precipitation |
| Answer» B. evaporation | |
| 84. |
What are the products of waste water treatment system? |
| A. | sludge |
| B. | biogas |
| C. | Both of these |
| D. | None of these |
| Answer» D. None of these | |
| 85. |
A child pushes a car but it does not displace from its place then, the work done will be known as |
| A. | positive work |
| B. | negative work |
| C. | zero work |
| D. | None of these |
| Answer» D. None of these | |
| 86. |
Read the given differences between X, Y and Z. S. No X Y Z (i) They are thin walled vessels with a small lumen, They are thick walled vessels with narrow lumen, They are thin walled vessels with wide lumen. (ii) They deliver blood to the body cells. They carry blood away from the heart. They bring blood towards the heart. (iii) They are placed very deep. They are situated in the deeper regions of the body. They are superficially situated. (iv) They carry both oxygenated and deoxygenated blood They carry oxygenated blood, except one. They carry deoxygenated blood, except one. Select the correct statement regarding X, Y and Z. |
| A. | X is permeable to gases and other substances while Y and Z are impermeable. |
| B. | X and Y are permeable to gases and other substances while Z is impermeable. |
| C. | X and Z are permeable to gases and other substances while Y is impermeable. |
| D. | Y is permeable to gases and other substances while X and Z are impermeable. |
| Answer» B. X and Y are permeable to gases and other substances while Z is impermeable. | |
| 87. |
Study the given flow chart carefully and select the option which is a correct match of xylem and phloem? |
| A. | Xylem Phloem P R |
| B. | Xylem Phloem R S |
| C. | Xylem Phloem S R |
| D. | Xylem Phloem Q R |
| Answer» D. Xylem Phloem Q R | |
| 88. |
DIRECTIONS: Read the following two statements carefully and choose the correct options. (i) In desert plants leaves are modified into spines to tide over harsh desert conditions. (ii) In regions of heavy snowfall trees have leaves modified into needle shape. |
| 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. | |
| 89. |
DIRECTIONS: Carefully observe pictures given below and answer the following questions. Three animals are shown below. Given below are the adaptations that help these animals to survive in the winter. Match them. (A) migrate to long distances (B) burrow in the mud to hibernate (C) grow thick far on its body. |
| A. | I-B, II-A, III-C |
| B. | I-A, II-B, III-C |
| C. | I-C, II-B, III-C |
| D. | I-B, II-C, III-A |
| Answer» E. | |
| 90. |
Which of the following organisms makes the soil porous? |
| A. | Centipedes |
| B. | Millepedes |
| C. | Beetles |
| D. | Earthworms |
| Answer» E. | |
| 91. |
Which one of the following statements is correct? Statement 1: Glaciers are the source of fresh water Statement 2: Ponds are the source of salty water |
| A. | Statement 1 |
| B. | Statement 2 |
| C. | Both statements are correct |
| D. | Both statements are incorrect |
| Answer» B. Statement 2 | |
| 92. |
Two bodies of masses 2kg and 5kg respectively are moving at same velocity. The ratio of their kinetic energy is |
| A. | 2:5 |
| B. | 0.295138888888889 |
| C. | 4:25 |
| D. | 1.04444444444444 |
| Answer» B. 0.295138888888889 | |
| 93. |
Why only iron is used for making electromagnet; not steel, nickel, cobalt? |
| A. | Because iron is cheep and easily available |
| B. | Because iron is a good conductor of electricity |
| C. | Because when current is switched off in the coil of an electromagnet made of iron, iron loses all its magnetism |
| D. | Because iron is a temporary magnet |
| E. | None of these |
| Answer» D. Because iron is a temporary magnet | |
| 94. |
The weak zones around the boundaries of plates underneath the Earth, which are prone to slide and cause earthquake are commonly known as |
| A. | Fault zone |
| B. | Eruption zone |
| C. | Explosive zone |
| D. | Sliding zone. |
| Answer» B. Eruption zone | |
| 95. |
DIRECTIONS: The questions in this segment consists of two statements, one labelled as "Assertion A" and the other labelled 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): Animals like sponges and Hydra do not possess any fluid like blood. Reason (R): Sponges and Hydra lack a circulatory system. |
| 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. | |
| 96. |
The relative humidity is measured with an instrument: |
| A. | Barometer |
| B. | Ammeter |
| C. | Hygrometer |
| D. | Crescograph |
| E. | None of these |
| Answer» D. Crescograph | |
| 97. |
Parthenogenesis is also a kind of reproduction found in females. In this type of reproduction male is not required. Embryo is developed from an unfertilized egg cell. Read the above cutting of science magazine and choose who is correct. Jack: This is a sexual mode of reproduction as egg is a female sex cell. Codi: This is an asexual mode of reproduction as male sex cell is not involved. |
| A. | Jack |
| B. | Codi |
| C. | Both of them |
| D. | All of these |
| E. | None of these |
| Answer» C. Both of them | |
| 98. |
Which one of the following is water soluble element? |
| A. | Vitamin A |
| B. | Vitamin-D |
| C. | Vitamin K |
| D. | Vitamin C |
| E. | None of these |
| Answer» E. None of these | |
| 99. |
Adjustment to environment is called |
| A. | mimicry |
| B. | adaptation |
| C. | hibernation |
| D. | migration |
| Answer» C. hibernation | |
| 100. |
Which of the following shows that air exerts pressure? |
| A. | The way a straw works |
| B. | The way an ink filler works |
| C. | Falling of rain drops |
| D. | Both (A) and (B) |
| Answer» E. | |