Tag: science & technology

Symbian^3 had approximately 2800 software components. This reflects the modular architecture of the Symbian operating system, which was designed to be component-based for flexibility and maintainability. The question tests knowledge of software architecture and the complexity of mobile operating systems.

Symbian OS was associated with 14 technology domains covering various aspects of mobile computing including telecommunications, multimedia, and networking. This number reflects the comprehensive scope of the Symbian platform's technical specifications.

The electromagnetic spectrum order by increasing frequency: radio waves (lowest frequency), visible light, ultraviolet, X-rays (highest frequency). This matches option C: 4,1,3,2. Frequency is inversely proportional to wavelength, and energy increases with frequency.

The dental formula for humans is 2123/2123, representing the number of each type of tooth in one quadrant: 2 incisors, 1 canine, 2 premolars, and 3 molars. This formula is counted for each quadrant (upper right, upper left, lower right, lower left).

Pyrex glass is heat-resistant due to its low thermal expansion coefficient, which prevents it from cracking under rapid temperature changes. It contains boron oxide (borosilicate glass) that gives it these properties, making it ideal for laboratory and kitchen use.

Photosynthesis is an endothermic (energy-absorbing) process because it requires energy input from sunlight to convert carbon dioxide and water into glucose and oxygen. The process stores energy in chemical bonds, which is why it's considered endothermic.

Refrigerators produce cooling through the evaporation of a volatile liquid refrigerant. When the refrigerant evaporates in the evaporator coils, it absorbs heat from the refrigerator compartment, creating the cooling effect. This is based on the principle that evaporation requires latent heat.

The brain relies almost exclusively on glucose for its energy requirements, as it cannot use fatty acids or other fuels directly. Under normal conditions, glucose is the primary substrate for brain metabolism, though it can use ketone bodies during fasting.

Blood contains iron (in hemoglobin), copper (in ceruloplasmin), and magnesium (as an electrolyte). Chromium is not a normal constituent of blood and is not required in blood physiology. While trace chromium exists in the body, it's not a blood component like the other elements listed.

The Dronacharya Award is India's highest honor for outstanding coaches in sports and athletics. It recognizes exceptional coaches who have trained athletes to achieve excellence at national and international levels. It's named after Dronacharya, the legendary guru from the Mahabharata who taught archery to the Pandavas.