81. What is Historiography?

• Recording history
• Study of past events
• Writing history
• Political history

Answer & Solution

82. What is Horology?

• Science of Measuring time
• Science of Astronomy
• Science of Time management
• Science of Time in physics

Answer & Solution

83. Horticulture is the science of _____ :

• Soil management
• Gardening
• Plant diseases
• Flower arrangement

Answer & Solution

84. Hydrobiology is the study of _________ :

• Aquatic organisms
• Water purification
• Marine biology
• Freshwater ecosystems

Answer & Solution

85. Hydrodynamics is the study of ____ :

• Fluid dynamics in the human body
• Water quality
• Movements in liquid
• Ocean currents

Answer & Solution

86. Hydrology is the study of ____ :

• Water distribution in plants
• Water resources
• Water purification
• Water cycle in atmosphere

Answer & Solution

87. Hydroponics is the cultivation of ____ :

• Soil-less farming
• Genetically modified crops
• Plants without use of soil
• Organic farming

Answer & Solution

88. Hyetology is the study of _____:

• Temperature changes
• Cloud formations
• Rainfall
• Weather patterns

Answer & Solution

89. Hygienics is the study of _____

• Water quality
• Sanitation and health
• Disease prevention
• Public health policy

Answer & Solution

90. What is Hygrology?

• Science of Humidity and moisture
• Science of Humidity
• Science of Rainfall patterns
• Science of Air pollution

Answer & Solution