.What is the purpose of a fire extinguisher?A: A fire extinguisher is used to extinguish small fires by releasing a chemical agent that interrupts the combustion process.Q: What are the different classes of fire, and how are they classified?A: Fires are classified into Class A (ordinary combustibles), Class B (flammable liquids), Class C (electrical fires), Class D (flammable metals), and Class K (cooking oils and fats).Q: What should you do in case of a chemical spill?A: In case of a chemical spill, evacuate the area, contain the spill to prevent it from spreading, and notify authorities for proper cleanup and disposal.Q: What are the symptoms of heat stroke, and how can it be treated?A: Symptoms of heat stroke include high body temperature, rapid pulse, and loss of consciousness. Treatment involves cooling the body and seeking medical attention immediately.What is the function of a CPU (Central Processing Unit) in a computer?A: The CPU performs arithmetic, logic, and control operations, and it acts as the brain of the computer.Q: What is the purpose of RAM (Random Access Memory) in a computer?A: RAM is used to temporarily store data and program instructions that are actively being used by the CPU.Q: What is the difference between ROM (Read-Only Memory) and RAM?A: ROM is non-volatile memory that stores firmware and cannot be modified, while RAM is volatile memory that stores data temporarily and can be read from and written to.Q: What is an operating system, and name a few examples.A: An operating system is software that manages computer hardware and provides services for computer programs. Examples include Windows, macOS, and Linux.Q: What is a computer virus, and how does it spread?A: A computer virus is malicious software that replicates itself and infects other files or systems. It spreads through email attachments, infected websites, and removable storage devices.What is the difference between a two-stroke and four-stroke engine?A: A two-stroke engine completes the intake, compression, power, and exhaust strokes in two-piston movements, while a four-stroke engine completes them in four-piston movements.