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This section includes 161 Mcqs, each offering curated multiple-choice questions to sharpen your Assertion and Reason knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
Assertion (A) : When a body is dipped in liquid fully or partially, there is a decrease in weight. Reason (R) : The decrease in weight is due to the higher density of the displaced liquid. |
| 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» D. A is false but R is true. | |
| 52. |
Assertion (A) : When common salt is kept open, it absorbs moisture from the air. Reason (R) : Common salt contains magnesium chloride. |
| 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. | |
| 53. |
Assertion (A) : A little gap is left between iron rails. Reason (R) : Iron expands in summer. |
| 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. | |
| 54. |
Assertion (A) : Uranium undergoes nuclear fusion reaction. Reason (R) : It has a big, unstable nucleus. |
| 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» E. | |
| 55. |
Assertion (A) : An iron ball floats on mercury but gets immersed in water. Reason (R) : The specific gravity of iron is more than that of mercury. |
| 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» D. A is false but R is true. | |
| 56. |
Assertion (A) : Copper is used to make electric wires. Reason (R) : Copper has very low electrical resistance. |
| 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. | Both A and R are false. |
| Answer» B. Both A and R are true but R is NOT the correct explanation of A. | |
| 57. |
Assertion (A) : In India, the judiciary is independent of the executive. Reason (R) : Judiciary favours the government and helps in the implementation of its plans. |
| 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» D. A is false but R is true. | |
| 58. |
Assertion (A) : Baking soda creates acidity in the stomach. Reason (R) : Baking soda is alkaline. |
| 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» E. | |
| 59. |
Assertion (A) : Tamil Nadu gets most of the rainfall in winter. Reason (R) : Tamil Nadu gets rainfall from retreating monsoons. |
| 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. | Both A and R are false |
| D. | A is true but R is false. |
| Answer» B. Both A and R are true but R is NOT the correct explanation of A. | |
| 60. |
Assertion (A) : Increase in carbon dioxide would melt polarice. Reason (R) : Global temperature would rise. |
| 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. | Both A and R are 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. | |
| 61. |
Assertion (A) : The Steam engine was invented by James Watt. Reason (R) : There was a problem of taking out water from flooded mines. |
| 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. | |
| 62. |
Assertion (A) : Bangladesh imports jute from India. Reason (R) : Bangladesh has most of the jute mills |
| A. | Both A and R are true and R is the correct explanation of A. |
| B. | A is true but R is false. |
| C. | Both A and R are false. |
| D. | A is false but R is true. |
| Answer» D. A is false but R is true. | |
| 63. |
Assertion (A) : Goitre is a common disease in mountainous regions. Reason (R) : The diet of the people in mountains lacks iodine content. |
| 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. | Both A and R are false |
| Answer» B. Both A and R are true but R is NOT the correct explanation of A. | |
| 64. |
Assertion (A) : Roughage prevents constipation. Reason (R) : Roughage adds bulk to the food. |
| 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. | Both A and R are 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. | |
| 65. |
Assertion (A) : Sprouting should not be done before consuming the grains. Reason (R) : Sprouting kills many vital vitamins. |
| A. | Both A and R are true and R is the correct explanation of A. |
| B. | A is true but R is false. |
| C. | Both A and R are false |
| D. | A is false but R is true. |
| Answer» D. A is false but R is true. | |
| 66. |
Assertion (A) : Milk production in India is low a compared to other countries of the world. Reason (R) : The animal rearers in India are poor. |
| 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» D. A is false but R is true. | |
| 67. |
Assertion (A) : The body of the fish is streamlined. Reason (R) : The streamlined body helps the fish to cut its way through the water. |
| 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. | Both A and R are false |
| Answer» B. Both A and R are true but R is NOT the correct explanation of A. | |
| 68. |
Assertiona (A) : Food materials should not be soaked in water for a long time. Reason (R) : Washing leads to loss of Vitamin A and Vitamin D from the foodstuff. |
| 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» D. A is false but R is true. | |
| 69. |
Assertion (A) : Buddha left home after his marriage. Reason (R) : He wished to be free of all worldly ties and become an ascetic. |
| 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. | |
| 70. |
Assertion (A) : Most of the ancient civilisations grew near the rivers. Reason (R) : The main occupation of man was agriculture |
| 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. | |
| 71. |
Assertion (A) : In the upper course, the main work of the river is erosion. Reason (R) : River flows swiftly in the upper course. |
| 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. | Both A and R are 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. | |
| 72. |
Assertion (A) : Pluto is the coldest planet. Reason (R) : It receives slanting rays of the sun. |
| 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» D. A is false but R is true. | |
| 73. |
Assertion (A) : Safety fuses are made up of materials having a high melting point. Reason (R) : Safety fuses should be resistant to electric current. |
| 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. | Both A and R are false |
| D. | A is false but R is true. |
| Answer» D. A is false but R is true. | |
| 74. |
Assertion (A) : Water kept in earthen pots gets cooled in summer. Reason (R) : Evaporation causes cooling. |
| 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. | Both A and R are 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. | |
| 75. |
Assertion (A) : We feel comfortable in hot and humid climate. Reason (R) : Sweat evaporates faster in humid climate. |
| 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. | Both A and R are false. |
| D. | A is false but R is true. |
| Answer» D. A is false but R is true. | |
| 76. |
Assertion (A) : Leaves of plants are green. Reason (R) : Plants contain Chromoplasts, the green pigment. |
| 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» D. A is false but R is true. | |
| 77. |
Assertion (A) : India is facing the problem of inflation. Reason (R) : We have to failed to check the growth of black money. |
| 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. | |
| 78. |
Assertion (A) : Bronze is used for making statues. Reason (R) : Bronze is an alloy of copper and tin. |
| 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. | |
| 79. |
Assertion (A) : The use of Chlorofluorocarbon carbons is banned throughout the world nowadays. Reason (R) : These chemicals cause skin cancer. |
| 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» D. A is false but R is true. | |
| 80. |
Assertion (A) : Plaster of Paris is used by doctors by setting fractured bones. Reason (R) : When plaster of Paris is mixed with water and applied around the fractured limbs, it sets in to a hard mass. |
| 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. | |
| 81. |
Assertion (A) : Land breeze blows during night. Reason (R) : Land gets heated up quickly. |
| 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. | |
| 82. |
Assertion (A) : Mohammad-bin-Tughluq is called the 'wisest fool'. Reason (R) : He had wise plans but implemented them foolishly. |
| 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. | |
| 83. |
Assertion (A) : Land breeze blows during night. Reason (R) : Land gets heated up quickly. |
| 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. | |
| 84. |
Assertion (A) : Simla is colder than Delhi. Reason (R) : Simla is at a higher altitude as compared to Delhi. |
| 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. | |
| 85. |
Assertion (A) : Leakages in household gas cylinders can be detected. Reason (R) : LPG has a strong smell. |
| 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» D. A is false but R is true. | |
| 86. |
Assertion (A) : We prefer to wear white clothes in winter. Reason (R) : White clothes are good reflectors of heat. |
| 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» E. | |
| 87. |
Assertion (A) : Leaves of plants are green. Reason (R) : Plants contain chromoplasts, the green pigment. |
| 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» D. A is false but R is true. | |
| 88. |
Assertion (A) : India is facing the problem of inflation. Reason (R) : We have failed to check the growth of black money. |
| 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. | Both A and R are false |
| Answer» B. Both A and R are true but R is NOT the correct explanation of A. | |
| 89. |
Assertion (A) : Bronze is used for making statues. Reason (R) : Bronze is an alloy of copper and trin. |
| 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. | Both A and R are false |
| Answer» C. A is true but R is false. | |
| 90. |
Assertion (A) : The use of chlorofluoro carbons is banned throughout the world nowadays. Reason (R) : These chemicals cause skin cancer. |
| 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» D. A is false but R is true. | |
| 91. |
Assertion (A) : We feel comfortable in hot and humid climate. Reason (R) : Sweat evaporates faster in humid climate. |
| 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. | Both A and R are false |
| Answer» E. | |
| 92. |
Assertion (A) : The freezing of sea water during winter does not kill the fishes. Reason (R) : Only surface water is frozen. |
| 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. | |
| 93. |
Assertion (A) : Plaster of Paris is used by doctors for setting fractured bones. Reason (R) : When Plaster of Paris is mixed with water and applied around the fractured limbs, it sets into a hard mass. |
| 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. | Both A and R are false |
| Answer» B. Both A and R are true but R is NOT the correct explanation of A. | |
| 94. |
Assertion (A) : Amoebiasis is an occupational disease. Reason (R) : Amoebiasis is caused by inhalation of asbestos dust. |
| 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. | Both A and R are false |
| Answer» E. | |
| 95. |
Assertion (A) : Most of the ancient civilisations grew near the river. Reason (R) : The main occupation of man was agriculture. |
| 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. | |
| 96. |
Assertion (A) : Pluto is the coldest planet. Reason (R) : It receives slanting rays of the sun. |
| 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. | |
| Answer» D. | |
| 97. |
Assertion (A) : In the upper course, the main work of the river is erosion. Reason (R) : River flows swiftly in the upper course. |
| 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. | Both A and R are 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. | |
| 98. |
Assertion: The president dissolved the 12th Lok Sabha but asked the present government to continue as a caretaker government. RI. New government cannot be formed immediately. RII. The country cannot run without a government. |
| A. | Only RI and not RII is the reason for the assertion. |
| B. | only RII and not RI is the reason for the assertion. |
| C. | either RI or RII, but not both, is the reason for the assertion. |
| D. | both RI and RII are the reason for the assertion. |
| Answer» E. | |
| 99. |
Assertion (A) : Safety fuses are made up of materials having a high melting point. Reason (R) : Safety fuses should be resistant to electric current. |
| 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. | Both A and R are false. |
| Answer» E. | |
| 100. |
Assertion: Computer coaching centres are mushrooming all over India. RI. Other than computer education, no other education is useful these days. RII. People are opting for computer education in a big way. |
| A. | Only RI and not RII is the reason for the assertion. |
| B. | only RII and not RI is the reason for the assertion. |
| C. | either RI or RII, but not both, is the reason for the assertion. |
| D. | neither RI nor RII is the reason for the assertion. |
| Answer» C. either RI or RII, but not both, is the reason for the assertion. | |