General Science and Technology Quiz

The sailfish is widely considered the fastest fish, capable of swimming speeds up to 110 km/h (68 mph). Their streamlined bodies and large dorsal fins (sails) make them exceptionally fast swimmers in short bursts. The barracuda is also fast but not as fast as the sailfish.

When sound travels from one medium to another, its frequency remains constant because it's determined by the source of the sound. However, wavelength and speed change because they depend on the properties of the medium (density, elasticity). This is why sounds seem different when heard through water versus air.

At Mount Everest's summit (8,848m), atmospheric pressure is about one-third of sea level pressure. This lower pressure reduces water's boiling point to approximately 71°C, though 69°C is the closest option. The exact boiling point varies with weather conditions.

In human blood, the normal physiological ratio of red blood cells (erythrocytes) to white blood cells (leukocytes) is approximately 600 to 1. This ensures that oxygen transport remains high while white blood cells are maintained in sufficient numbers for immune defense.

The SI unit of inductance is the Henry (H), named after Joseph Henry. Farad is the unit of capacitance, Ohm is the unit of resistance, and Watt is the unit of power.

The SI unit of power is the Watt (W), named after James Watt. Volt is the unit of electric potential, Ohm is the unit of resistance, and Coulomb is the unit of electric charge.

The SI unit of electric charge is the Coulomb (C), named after Charles-Augustin de Coulomb. Farad is the unit of capacitance, Watt is the unit of power, and Ohm is the unit of resistance.

The SI unit of capacitance is the Farad (F), named after Michael Faraday. Ampere is the unit of current, Watt is the unit of power, and Henry is the unit of inductance.

The SI unit of electric current is the Ampere (A), named after André-Marie Ampère. Ohm is the unit of resistance. The options 'Amparas' and 'Ambrass' are misspellings or nonexistent units.

Java does not support multiple inheritance of classes to avoid complexity and the diamond problem. It does support multi-level inheritance (inheritance chain) and single inheritance. Java emphasizes security through its sandbox model and bytecode verification, and portability through its JVM architecture.

Java uses the Java Virtual Machine (JVM) as its runtime environment. The JVM executes Java bytecode and provides platform independence. The options 'J' and 'JJM' are meaningless in the context of Java architecture.

A class in object-oriented programming is a blueprint that encapsulates data and methods together. Encapsulation bundles related data and behavior into a single unit, hiding internal details. Options A, C, and D are incorrect - classes are not just interfaces, not databases, and 'none' is wrong.

Java is a high-level programming language that abstracts away low-level machine details. It runs on a virtual machine (JVM) and uses automatic memory management. Machine language and microprocessor language are low-level, closer to hardware.

Java is a high-level programming language that abstracts away low-level machine details. It runs on a virtual machine (JVM) and uses automatic memory management. Machine language and microprocessor language are low-level, closer to hardware.

Java was created by James Gosling at Sun Microsystems in 1995. He led the design and implementation of the original Java language and virtual machine. James Ghose and Michael James are not associated with Java's creation.

The Emu is the national bird of Australia and is a large flightless bird native to the continent. Eagles, Mute Swans, and Golden Eagles are not native Australian symbols in the same way.

The Blue Crane is South Africa's national bird, adopted in 1960 for its grace and cultural significance. The Short-toed Eagle and European Robin are not native to South Africa, and the African Fish Eagle, while African, is not South Africa's official emblem.

The Green Pheasant is Japan's national bird, an endemic species found only in Japan. The Gallic Rooster is France's emblem, the Goldcrest is a tiny European bird, and the Golden Eagle has a wide range but is not Japan's national symbol.

The Whooper Swan is Finland's national bird, chosen for its elegance and prevalence in northern Europe. The Barn Swallow is widespread but not Finland's emblem, Green Pheasant is Japan's bird, and White Wagtail is common across Eurasia.