General Science & Technology Quiz

Cryptovirology is the study of cryptography from an attacker's perspective, including how malware can use cryptography (like ransomware encrypting files) and how to attack cryptographic systems. Kleptography is the study of stealing information securely using subliminal channels, cryptology is the broader field encompassing both cryptography and cryptanalysis, and cryptography is the practice of secure communication.

Kleptography is the study of stealing information securely and subliminally, typically through backdoors in cryptographic systems. Unlike cryptovirology (which uses cryptography for malicious attacks) or steganography (hiding existence of messages), kleptography focuses on covertly extracting information from secure systems.

Dr. APJ Abdul Kalam's full name was Avul Pakir Jainulabdeen Abdul Kalam. He was India's 11th President (2002-2007) and a renowned aerospace scientist. The key distinction is 'Pakir' not 'Pakul', and 'Jainulabdeen' not 'Jaldeen'.

Dr. APJ Abdul Kalam's full name was Avul Pakir Jainulabdeen Abdul Kalam. He was India's 11th President (2002-2007) and a renowned aerospace scientist. The key distinction is 'Pakir' not 'Pakul', and 'Jainulabdeen' not 'Jaldeen'.

Dr. APJ Abdul Kalam's full name was Avul Pakir Jainulabdeen Abdul Kalam. He was India's 11th President (2002-2007) and a renowned aerospace scientist. The key distinction is 'Pakir' not 'Pakul', and 'Jainulabdeen' not 'Jaldeen'.

Dr. APJ Abdul Kalam's full name was Avul Pakir Jainulabdeen Abdul Kalam. He was India's 11th President (2002-2007) and a renowned aerospace scientist. The key distinction is 'Pakir' not 'Pakul', and 'Jainulabdeen' not 'Jaldeen'.

Dr. APJ Abdul Kalam's full name was Avul Pakir Jainulabdeen Abdul Kalam. He was India's 11th President (2002-2007) and a renowned aerospace scientist. The key distinction is 'Pakir' not 'Pakul', and 'Jainulabdeen' not 'Jaldeen'.

Dr. APJ Abdul Kalam was famously known as the 'Missile Man of India' for his work on developing India's missile programs including AGNI and PRITHVI. Sardar Vallabhbhai Patel was called the 'Iron Man of India' for uniting the princely states.

Dr. APJ Abdul Kalam was the first scientist to become President of India and also the first bachelor to occupy Rashtrapati Bhavan (the President's official residence). The phrasing 'to Occupy Rashtrapati Bhavan' refers to becoming President. Option D captures this unique distinction.

APJ Abdul Kalam received Padma Bhushan (1981), Padma Vibhushan (1990), and Bharat Ratna (1997) - India's highest civilian awards. The Nobel Prize was never awarded to him.

Kalam used carbon fiber composite material to design lightweight callipers, reducing weight from 4kg to 400gms. This innovation made polio callipers affordable and comfortable for users.

An anemometer is the specialized meteorological instrument designed to measure wind speed and pressure. Barometers measure atmospheric pressure, thermometers measure temperature, and psychrometers measure relative humidity.

A fluoroscope was an early X-ray imaging device that allowed real-time visualization of internal structures using continuous X-ray beams. It was a precursor to modern fluoroscopy machines used in medical imaging today.

Gold is an element (Au) with atomic number 79, not a compound. A compound consists of two or more different elements chemically bonded together. Gold exists as pure elemental metal in nature.

Buzz Aldrin (Edwin Eugene Aldrin Jr.) was the second person to walk on the moon on July 20, 1969, stepping onto the lunar surface about 19 minutes after Neil Armstrong first set foot.

The photosphere is the visible surface layer of the Sun that we can see from Earth. It's approximately 500 km thick and has a temperature of about 5,500°C. The core is the innermost region where nuclear fusion occurs, the chromosphere is a thin layer above the photosphere, and the corona is the Sun's outer atmosphere visible during eclipses.

Nikola Tesla pioneered the development of alternating current (AC) systems and transformers, which allowed electricity to be transmitted over long distances with minimal energy loss. Thomas Edison was a proponent of DC current, which could not be transmitted efficiently over long distances.

NASA (National Aeronautics and Space Administration) has displayed a painting of Tipu Sultan in its building to honor his contributions. Tipu Sultan, the 18th-century ruler of Mysore, is noted for his support of science and technology, including his interest in rocketry and military innovations. NASA acknowledged this historical connection to early rocket development.

Archimedes invented the water screw, also known as the Archimedes' screw, around 250 BCE. This device is still used today in rural areas for lifting water. Ts'ai Lun invented paper, Ibn al-Haitham made contributions to optics, and Fyodor Dostoyevsky was a novelist, not an inventor.