General KnowledgeScience GK 100+ MCQ & Answer Science General Knowledge | page-09 | General Knowledge MCQ And Answer February 4, 2025 DSN MARATHI 81. When two mercury drops are brought into contact they form a single bigger drop to get which of the following? A. Minimum volume B. Minimum surface area C. Maximum size D. Maximum surface area Answer Option : B 82. On a smooth glass surface , the drop of water spreads while the drop of mercury remains almost spherical. This proves that ________? A. Cohesive forces of mercury is more than adhesive forces with glass B. Cohesive force of water is less than cohesive forces of mercury C. mercury is a metal D. 1 & 2 Answer Option : A 83. Which of the following causes the drop of water to be in spherical shape? A. Viscosity B. Air resistance C. Surface tension D. Temperature Answer Option : C 84. kalpana-1 was first exclusive satellite built by ISRO in which of the following satellite systems? A. INSAT B. METSAT C. GSAT D. EDUSAT Answer Option : B 85. First Indian Satellite Aryabhatta was launched in which year ? A. 1970 B. 1972 C. 1975 D. 1980 Answer Option : C 86. Which among the following is the property of Tungsten which makes it eligible to use in the bulbs? A. highest melting point B. highest resistance C. Highest malleability D. All are correct Answer Option : A 87. The speed of Sound is maximum in which of the following ? A. Air at zero degree C B. Air at 100 degree C C. Water D. At all places it is maximum Answer Option : C 88. Steam at 100 degree centigrade causes more severe burns. Which of the following phenomena will you use to explain this? A. Specific heat B. Latent heat C. Fusion D. Fission Answer Option : B 89. Which of the following waves can be used to measure the speed of a approaching car? A. Light waves B. Micro waves C. Radio waves D. Sound waves Answer Option : C 90. Which among the following sentence is correct reason behind the blue color of ocean water? A. Water molecules absorb all other colors except blue B. Impurities in Sea water reflect the blue light C. Water molecules scatter the blue light D. None of the above Answer Option : C
81. When two mercury drops are brought into contact they form a single bigger drop to get which of the following? A. Minimum volume B. Minimum surface area C. Maximum size D. Maximum surface area Answer Option : B
82. On a smooth glass surface , the drop of water spreads while the drop of mercury remains almost spherical. This proves that ________? A. Cohesive forces of mercury is more than adhesive forces with glass B. Cohesive force of water is less than cohesive forces of mercury C. mercury is a metal D. 1 & 2 Answer Option : A
83. Which of the following causes the drop of water to be in spherical shape? A. Viscosity B. Air resistance C. Surface tension D. Temperature Answer Option : C
84. kalpana-1 was first exclusive satellite built by ISRO in which of the following satellite systems? A. INSAT B. METSAT C. GSAT D. EDUSAT Answer Option : B
85. First Indian Satellite Aryabhatta was launched in which year ? A. 1970 B. 1972 C. 1975 D. 1980 Answer Option : C
86. Which among the following is the property of Tungsten which makes it eligible to use in the bulbs? A. highest melting point B. highest resistance C. Highest malleability D. All are correct Answer Option : A
87. The speed of Sound is maximum in which of the following ? A. Air at zero degree C B. Air at 100 degree C C. Water D. At all places it is maximum Answer Option : C
88. Steam at 100 degree centigrade causes more severe burns. Which of the following phenomena will you use to explain this? A. Specific heat B. Latent heat C. Fusion D. Fission Answer Option : B
89. Which of the following waves can be used to measure the speed of a approaching car? A. Light waves B. Micro waves C. Radio waves D. Sound waves Answer Option : C
90. Which among the following sentence is correct reason behind the blue color of ocean water? A. Water molecules absorb all other colors except blue B. Impurities in Sea water reflect the blue light C. Water molecules scatter the blue light D. None of the above Answer Option : C
