MCQOPTIONS
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MCQOPTIONS
This section includes 448 Mcqs, each offering curated multiple-choice questions to sharpen your 4th Class knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
What Elisha Otis invented? |
| A. | The brake used in modern elevators |
| B. | Jet Engine |
| C. | Turbine |
| D. | Hydraulic Crane |
| Answer» B. Jet Engine | |
| 52. |
Which insurance salesman invented the fountain pen in 1884? |
| A. | Lewis Edson Waterman |
| B. | Sir William Grove |
| C. | Charles Kettering |
| D. | George Fountain |
| Answer» B. Sir William Grove | |
| 53. |
Who had an explosive idea and first patented DYNAMITE? |
| A. | J. R. Gluber |
| B. | A. Nobel |
| C. | G. Fawks |
| D. | W. Bickford |
| Answer» C. G. Fawks | |
| 54. |
He was a Scottish engineer, who demonstrated the first working television system in 1926. He was the inventor of both the first publicly demonstrated colour television system, and the first purely electronic colour television picture tube. Who was he? |
| A. | Charles Darwin |
| B. | Douglas Engelbart |
| C. | John Logie Baird |
| D. | Samuel Morse |
| Answer» D. Samuel Morse | |
| 55. |
What Galileo invented? |
| A. | Barometer |
| B. | Pendulum clock |
| C. | Microscope |
| D. | Thermometer |
| Answer» E. | |
| 56. |
An extraordinary man, he was best known as a painter. But he was also a great scientist who drew plans for a workable helicopter, tank, calculator and many other things that we use today. Who was this genius? |
| A. | Michelangelo |
| B. | Botticelli |
| C. | Titian |
| D. | Leonardo da Vinci |
| Answer» E. | |
| 57. |
Which common material used by human beings is obtained from sand? |
| A. | Rubber |
| B. | Glass |
| C. | Flax |
| D. | Wool |
| Answer» C. Flax | |
| 58. |
She was the first India-born woman astronaut. She was part of the space shuttle Columbia mission. She died tragically when the craft blew up during re-entry into Earth. Who was she? |
| A. | Kalpana Chawla |
| B. | Sunita Williams |
| C. | Indira Hinduja |
| D. | Janaki Ammal |
| Answer» B. Sunita Williams | |
| 59. |
Which country in the world has maximum number of robots working? |
| A. | India |
| B. | Russia |
| C. | Australia |
| D. | Japan |
| Answer» E. | |
| 60. |
Ice is ____ than water but _____than alcohol. |
| A. | heavier, lighter |
| B. | lighter, heavier |
| C. | hard, soft |
| D. | none of these |
| Answer» E. | |
| 61. |
Which one of the following scatters more light? |
| A. | Violet |
| B. | Blue |
| C. | Red |
| D. | Both [A] and [B] |
| Answer» E. | |
| 62. |
Who invented Jet Engine? |
| A. | Sir Frank Whittle |
| B. | Gottlieb balmier |
| C. | Roger Bacon |
| D. | Lewis E. Waterman |
| Answer» B. Gottlieb balmier | |
| 63. |
Which of the following help in converting milk into curd? |
| A. | Viruses |
| B. | Fungi |
| C. | Bacteria |
| D. | Protozoa |
| Answer» D. Protozoa | |
| 64. |
The life cycles of plants vary from plant to plant. Some plants live for a year while others can live for centuries. What are the plants that take two years to complete their life cycles called? |
| A. | Annual |
| B. | Biennial |
| C. | Perennial |
| D. | None of these |
| Answer» C. Perennial | |
| 65. |
Which of these is an example of an arboreal animal? |
| A. | Frog |
| B. | Monkey |
| C. | Mouse |
| D. | Goldfish |
| Answer» C. Mouse | |
| 66. |
Look at the given list. In which order do the following happen in the life cycle of a flowering plant? Fruit and Seeds Flowering Pollination |
| A. | Pollination, Flowering, Fruit and seeds |
| B. | Fruit and seeds, Flowering, pollination |
| C. | Flowering, Pollination, Fruit and seeds |
| D. | Pollination, Fruits and seeds, Flowering |
| Answer» D. Pollination, Fruits and seeds, Flowering | |
| 67. |
What are plants that grow in water called? |
| A. | Underwater plants |
| B. | Fixed aquatic plants |
| C. | Terrestrial plants |
| D. | Floating aquatic plants |
| Answer» E. | |
| 68. |
These living beings take in carbon dioxide and give out oxygen during daytime. Which of the following organisms is being described here? |
| A. | Insects |
| B. | Trees |
| C. | Reptiles |
| D. | Amphibians |
| Answer» C. Reptiles | |
| 69. |
Given below are the features of leaves of plants. 1. Submerged leaves, which are very thin and narrow, often dissect and are very flexible. 2. Floating leaves, broader leaves those are firm of leathery but flexible enough to resist tearing by wave action. Which one of the following plants possess the type of leave mentioned above |
| A. | Desert plants |
| B. | Plants in the hilly areas |
| C. | Aquatic plants |
| D. | All of these |
| Answer» D. All of these | |
| 70. |
Hibernation is a process in which animals goes for winter sleep. What is the reason behind this? (2015) |
| A. | Due to tiredness |
| B. | Due to scarcity of food and extreme cold |
| C. | To compensate the consumed energy |
| D. | To digest the food |
| Answer» C. To compensate the consumed energy | |
| 71. |
Cactus and camel might live in this habitat. |
| A. | Ocean |
| B. | Rainforest |
| C. | Desert |
| D. | Polar region |
| Answer» D. Polar region | |
| 72. |
Which of the following animals is an amphibian? |
| A. | Bat |
| B. | Frog |
| C. | Monkey |
| D. | Lizard |
| Answer» C. Monkey | |
| 73. |
Animals are divided into different categories based on a number of characteristics including eating habits, reproduction and appearance. What is this process called? |
| A. | Classification |
| B. | Diversification |
| C. | Simplification |
| D. | None of these |
| Answer» B. Diversification | |
| 74. |
Which of the following is true for carnivorous animals? |
| A. | They have big grinding teeth only. |
| B. | They have sharp, well developed tearing teeth. |
| C. | They have pointed biting teeth only. |
| D. | They have well-developed grinding and biting teeth. |
| Answer» C. They have pointed biting teeth only. | |
| 75. |
Which of the following animals breathe through the gills? (2016) |
| A. | Tadpole |
| B. | Fish |
| C. | Both [A] and [B] |
| D. | Crab |
| Answer» D. Crab | |
| 76. |
Which of these structural adaptations allow the pine tree to survive in hilly areas Needle-like leaves Green-fleshy stem Cones instead of flowers Breathing roots |
| A. | [A] and [B] |
| B. | [A] and [C] |
| C. | [B] and [C] |
| D. | [B] and [C] |
| Answer» C. [B] and [C] | |
| 77. |
Which of these is NOT a reason for migration in animals? |
| A. | They migrate in search of food. |
| B. | They migrate in search of water. |
| C. | They want to sightsee. |
| D. | They travel in order to escape heat or cold. |
| Answer» D. They travel in order to escape heat or cold. | |
| 78. |
Plants growing in drier conditions tend to have small numbers of stomata on their lower leaf surface to save (2015) |
| A. | water loss |
| B. | stored sunlight |
| C. | to prevent itself from consumers |
| D. | energy loss |
| Answer» B. stored sunlight | |
| 79. |
Swollen stem of cactus is important to |
| A. | absorb more oxygen |
| B. | absorb more carbon dioxide |
| C. | absorb more water |
| D. | absorb more sunlight |
| Answer» D. absorb more sunlight | |
| 80. |
White coat of polar bears helps them to |
| A. | Camouflage |
| B. | look big |
| C. | dry faster |
| D. | stay healthy |
| Answer» B. look big | |
| 81. |
Leaves of cactus are adapted to reduce water loss by turning into (2017) |
| A. | Needles |
| B. | spines |
| C. | Both [A] and [B] |
| D. | flowers |
| Answer» D. flowers | |
| 82. |
Migration is |
| A. | the movement of animals over the same route at different times of the year. |
| B. | a form of locomotion. |
| C. | the movement of animals over the same route in the same season each year. |
| D. | a resting state that helps animals survive in the winter months. |
| Answer» D. a resting state that helps animals survive in the winter months. | |
| 83. |
If animals cannot adapt to changes in their environment, what is likely to happen? (2017) |
| A. | Extinction |
| B. | Locomotion |
| C. | Metamorphosis |
| D. | Hibernation |
| Answer» B. Locomotion | |
| 84. |
Which of these structural adaptations allow the pine tree to survive in hilly areas? (A) Needle-like leaves (B) Green-fleshy stem (C) Cones instead of flowers (D) Breathing roots |
| A. | (a) and (b) |
| B. | (a) and (c) |
| C. | (b) and (c) |
| D. | (b) and (d) |
| Answer» C. (b) and (c) | |
| 85. |
Which of the following is an example of a behavior? (2016) |
| A. | Having white fur |
| B. | Living in an ocean |
| C. | Producing enough food for yourself |
| D. | Traveling to a new place to find food |
| Answer» E. | |
| 86. |
Which of the following shows the correct match of a plant and its mode of reproduction? |
| A. | Tamarind - Root |
| B. | Sugarcane - Stem |
| C. | Ferns - Spores |
| D. | All of these |
| Answer» E. | |
| 87. |
'X' do not have chlorophyll. 'X' get their nutrients from dead animal and plant matter. What is 'X'? |
| A. | Parasites |
| B. | Saprophytes |
| C. | Insectivores |
| D. | None of these |
| Answer» C. Insectivores | |
| 88. |
Photosynthesis is the process by which a plant makes food. What does this process produce? |
| A. | Glucose and oxygen |
| B. | Water, carbon dioxide and sugar |
| C. | Carbon dioxide and sugar |
| D. | Oxygen and proteins |
| Answer» B. Water, carbon dioxide and sugar | |
| 89. |
Porcupines' main line of defense comes from their. |
| A. | Teeth |
| B. | quills |
| C. | Claws |
| D. | all of these |
| Answer» C. Claws | |
| 90. |
Bears are able to survive winter months because they _____. (2015) |
| A. | Hibernate |
| B. | Hunt |
| C. | Fish |
| D. | aestivate |
| Answer» B. Hunt | |
| 91. |
Which of the following is the ability of an animal to fit into its surroundings? |
| A. | Symmetry |
| B. | Exoskeleton |
| C. | Camouflage |
| D. | None of these |
| Answer» D. None of these | |
| 92. |
Which of these is an example of an arboreal animal? (2017) |
| A. | Frog |
| B. | Monkey |
| C. | Mouse |
| D. | Goldfish |
| Answer» C. Mouse | |
| 93. |
Skin of polar bears and penguins keep them warm through |
| A. | Piece of blanket |
| B. | Insulated wool layer |
| C. | Insulated fat layer |
| D. | Insulated protein layer |
| Answer» D. Insulated protein layer | |
| 94. |
How have fish adapted to move in water? |
| A. | They have legs. |
| B. | They have fins. |
| C. | They have gills. |
| D. | They have paddle-like flippers. |
| Answer» C. They have gills. | |
| 95. |
Plants which live in rainforests and climb on walls and trees are |
| A. | Climbers |
| B. | creepers |
| C. | Both [A] and [B] |
| D. | jeepers |
| Answer» D. jeepers | |
| 96. |
Thick and fleshy stem of cactus can store _____. (2017) |
| A. | Water |
| B. | food |
| C. | Seed |
| D. | nutrients |
| Answer» B. food | |
| 97. |
In which habitat would you find a polar bear? |
| A. | Rainforest |
| B. | Desert |
| C. | River |
| D. | Polar region |
| Answer» E. | |
| 98. |
Money plant can climb on trees with the help of its ________. (2017) |
| A. | Clasping roots |
| B. | leaves |
| C. | stem |
| D. | sunlight |
| Answer» B. leaves | |
| 99. |
Which animal breathes through gills when it is young, but breathes through lungs as an adult? |
| A. | Prawn |
| B. | Frog |
| C. | Viper |
| D. | Lizard |
| Answer» C. Viper | |
| 100. |
What is the natural home of an animal called? |
| A. | Nest |
| B. | House |
| C. | Water |
| D. | Habitat |
| Answer» E. | |