Reviewer - Recent questions and answers in General Knowledge

Answered: Cyclone Ditwah Update: When will the storm make landfall?

Fri, 28 Nov 2025 18:33:27 +0000

Weather is cloudy and no rain at this time.

Answered: What is the Internet and how does it work in simple terms?

Tue, 25 Nov 2025 12:52:10 +0000

The Internet is powered by a mix of undersea cables, satellite systems, fiber-optic lines and wireless networks. These help connect countries and continents. Websites are stored on powerful computers called servers. When you open Google or any other site, your request is routed through multiple networks until it reaches the correct server.

For basic technology exams, remember: Internet = global network, based on TCP/IP, uses servers and routers to transmit data.

Answered: Why is the sky blue according to basic science?

Tue, 25 Nov 2025 12:42:45 +0000

For science exams, remember this simple line: “Blue light scatters the most because it has a shorter wavelength.” This is the core reason behind the blue sky. Rayleigh scattering also helps explain why distant mountains look bluish and why astronauts see a black sky in space. Since space lacks atmosphere, no scattering occurs, so the sky looks completely dark.

Answered: What is a CPU and why is it called the brain of the computer?

Tue, 25 Nov 2025 12:22:30 +0000

Modern processors like Intel, AMD and ARM-based chips use multiple cores so the CPU can handle many tasks simultaneously. For example, a quad-core CPU can execute four instructions at the same time. This improves multitasking, gaming performance and overall speed. For basic computer knowledge exams, remember: CPU = main processor + executes instructions + measured in GHz + multi-core improves performance.

Answered: How do vaccines work inside the human immune system?

Tue, 25 Nov 2025 12:12:30 +0000

Modern vaccines also use technologies like mRNA, which teach cells to produce harmless proteins that trigger the immune response. This method is safe and effective. For GK exams, remember: vaccines reduce disease, prevent outbreaks, and build herd immunity. They are considered one of the greatest public health achievements in science.

Answered: What is cloud storage and how does it keep your files safe?

Tue, 25 Nov 2025 11:42:35 +0000

Cloud storage also supports automatic backups. For example, your phone may upload your photos to Google Photos or iCloud, ensuring your data is safe even if your device gets lost or damaged. For Technology Basics GK, remember: Cloud = online storage, accessible anywhere, uses large data centers, provides backup and security.

Answered: What causes earthquakes according to science?

Tue, 25 Nov 2025 11:27:20 +0000

The point beneath the Earth’s surface where the energy is released is called the focus, and the point directly above it on the surface is called the epicenter. Earthquakes can also be caused by volcanic activity, mining, and large reservoirs, but tectonic movements are the most common cause. For competitive exams, remember: Plate movement = stress = sudden release = earthquake.

Answered: What is an operating system and why do devices need it?

Tue, 25 Nov 2025 11:02:25 +0000

The OS provides key features like file management, user interface, system updates and security controls. It also manages multitasking by allowing several applications to run at the same time. For Technology Basics GK, remember: OS = system software + manages hardware + runs apps + ensures security.

Answered: What is Wi-Fi and how does it allow devices to connect wirelessly?

Tue, 25 Nov 2025 10:22:20 +0000

Different Wi-Fi bands like 2.4 GHz and 5 GHz offer varying speeds and range. Wi-Fi is secure when protected with strong passwords and encryption methods like WPA2 or WPA3. For Technology Basics GK, remember: Wi-Fi = wireless network + uses radio waves + connects devices without cables.

Answered: What is photosynthesis in plants?

Tue, 25 Nov 2025 09:57:30 +0000

Photosynthesis can be summarised with the simple equation: Carbon dioxide + Water + Sunlight → Glucose + Oxygen. Plants store glucose for energy and growth. This process helps maintain the balance of oxygen and carbon dioxide in the atmosphere. Without photosynthesis, life on Earth would not be possible.

Answered: What is the speed of light and why is it important in physics?

Tue, 25 Nov 2025 09:27:20 +0000

The speed of light is important because it represents the maximum speed at which information or matter can travel. It also helps scientists measure distances in space using “light-years,” which represent how far light travels in one year. For Science GK, remember: speed of light = 3 lakh km/s, symbol = c, importance = universal constant in physics.

Answered: What is the “Ring of Fire” and why do so many earthquakes and volcanoes occur there?

Mon, 24 Nov 2025 14:32:18 +0000

Because of this intense tectonic activity, the Ring of Fire contains around 75% of the world’s active volcanoes and experiences frequent earthquakes. Many of the world’s major tsunamis also originate in this region. For Geography exams, remember: Location – around Pacific Ocean, Feature – high volcanic and earthquake activity, Reason – tectonic plate boundaries. These three points cover most typical GK questions on the topic.

Answered: What is a coastal city and what advantages does it have?

Mon, 24 Nov 2025 14:07:15 +0000

Coastal cities often benefit from tourism, fishing industries and milder climates compared to inland areas. However, they also face challenges such as cyclones, tsunamis, coastal erosion and rising sea levels due to climate change. For exam answers, you can mention both advantages (trade, tourism, employment) and disadvantages (natural disasters, overcrowding, pollution) to give a complete, well-balanced response.

Answered: What is the difference between latitude and longitude in geography?

Mon, 24 Nov 2025 13:42:18 +0000

Longitude lines run vertically (north–south) from pole to pole and measure how far a place is east or west of the Prime Meridian (0° longitude), which passes through Greenwich, near London. Longitude is closely linked with time zones. As the Earth rotates, different longitudes experience sunrise and sunset at different times. Using both latitude and longitude together, we can find the exact location of any city, island or landmark on the globe—for example, New Delhi is roughly at 28.6°N, 77.2°E.

Answered: Why do some places have four seasons while others have only summer and rainy seasons?

Mon, 24 Nov 2025 13:17:15 +0000

In India, for example, the climate is strongly influenced by the monsoon winds. So we often describe seasons as summer, monsoon and winter. However, in high-altitude areas like the Himalayas, seasonal changes are more similar to temperate regions. For exam purposes, remember: seasons depend on Earth’s tilt, revolution around the Sun and latitude of the place. This concept is very important in basic geography.

Answered: Which is the largest continent in the world and why is it so important?

Mon, 24 Nov 2025 12:52:15 +0000

For Geography MCQs, it is useful to remember: Largest continent by area and population – Asia, Smallest continent – Australia. Asia also contains the highest point on Earth (Mount Everest), some of the longest rivers (Yangtze, Ganga-Brahmaputra system) and some of the oldest civilizations (Indus Valley, Mesopotamia, Chinese civilization). This makes the continent extremely important from both physical and human geography perspectives.

Answered: Who was known as the “Napoleon of India”?

Mon, 24 Nov 2025 12:27:20 +0000

The Allahabad Pillar inscription, composed by Harishena, describes Samudragupta’s conquests in detail. It lists the kingdoms he defeated and the areas that came under Gupta influence. His reign is often regarded as the “golden age” of military expansion. For GK exams, remember: Samudragupta – Napoleon of India, Gupta Dynasty, Known for military campaigns.

Answered: Who discovered the sea route to India?

Mon, 24 Nov 2025 12:07:20 +0000

This sea route transformed global commerce and marked the beginning of European influence in India. Portugal soon established trading posts on the western coast, including Goa. For history exams, remember: Discoverer – Vasco da Gama, Year – 1498, First Landing – Calicut, Kerala.

Answered: Who was the first Mughal Emperor of India?

Mon, 24 Nov 2025 11:42:18 +0000

Babur ruled for a short period but laid the foundations of a strong empire that his son Humayun and grandson Akbar later expanded. His autobiography, the Baburnama, gives detailed insights into his life, battles, administrative ideas and the geography of India during his time. Babur is remembered as a skilled warrior, poet and statesman.

Answered: Who built the Qutub Minar in Delhi?

Mon, 24 Nov 2025 11:17:20 +0000

The Qutub Minar stands at about 73 meters and features verses from the Quran carved on its surface. Over centuries, it has undergone repairs due to lightning and earthquakes. Later rulers like Firoz Shah Tughlaq also made restorations. The tower is now a UNESCO World Heritage Site and a major tourist attraction in Delhi.

Answered: Who was the founder of the Maurya Empire?

Mon, 24 Nov 2025 10:52:18 +0000

Chandragupta Maurya’s rise also changed India’s political landscape. Sources like Megasthenes’ Indica and Buddhist texts describe him as a skilled warrior and administrator. After ruling successfully for many years, he is said to have embraced Jainism and spent his last years in Karnataka. His successors, Bindusara and Emperor Ashoka, further expanded the Mauryan legacy.

Answered: Who was the first woman Prime Minister of India?

Mon, 24 Nov 2025 10:37:15 +0000

For exam preparation, it is important not to confuse the first woman Prime Minister with the first woman President. Indira Gandhi was the first woman Prime Minister of India, whereas Pratibha Patil was the first woman President of India. Questions on this distinction appear regularly in school GK tests, UPSC prelims, banking exams and state-level competitive exams.

Remembering such “first woman” milestones helps strengthen your India GK section and improves accuracy in objective-type questions.

Answered: Who built Fatehpur Sikri near Agra?

Mon, 24 Nov 2025 10:17:18 +0000

Although Fatehpur Sikri was grand and impressive, it was abandoned after a few years, mainly due to water shortage and strategic reasons. The Mughal court eventually shifted back to Agra and later to Delhi. For GK exams, you should remember: Builder – Akbar, Period – second half of the 16th century, Location – near Agra (Uttar Pradesh), Status – UNESCO World Heritage Site. These points often appear in history and India GK sections.

Answered: Which is the longest river in India?

Mon, 24 Nov 2025 09:52:18 +0000

In exams, students should remember that the Ganga is the longest river in India, whereas the Nile is considered the longest river in the world. Another point: when considering only rivers that flow entirely within Indian territory, the Godavari is often called the “Dakshin Ganga” or “Ganga of the South”. But in terms of overall length in India, Ganga remains the longest and is one of the most frequently asked GK facts.

Answered: Who designed the national flag of India?

Mon, 24 Nov 2025 09:27:15 +0000

Pingali Venkayya’s contribution is now widely recognised in history books and competitive exam material. Earlier versions of the flag included symbols like the spinning wheel (charkha), which represented self-reliance and the Swadeshi movement. When India became independent, the charkha was replaced with the Ashoka Chakra to represent law, dharma and progress.

For quick revision, remember this GK point: Pingali Venkayya – Designer of the Indian national flag, Final adoption – 22 July 1947, Ashoka Chakra – 24 spokes, navy blue. This combination is very important for exams like SSC, railway and state-level GK tests.

Who wrote the national song of India, “Vande Mataram”?

Mon, 24 Nov 2025 09:00:00 +0000

India’s freedom struggle is closely connected with patriotic songs and slogans. One of the most iconic among them is “Vande Mataram”, which is recognised as the national song of India. Students preparing for competitive exams and general knowledge quizzes are often asked about its writer and historical background because the song played a major role in inspiring freedom fighters against British rule.

Which country is the most densely populated in the world?

Mon, 24 Nov 2025 08:40:00 +0000

Population density refers to how many people live in each square kilometer of land. Some countries are extremely crowded due to small land area and high population levels. So which country holds the top spot for density?

Which river is considered the longest river in the world?

Mon, 24 Nov 2025 08:10:50 +0000

Rivers are essential for agriculture, transportation, and human civilization. While many are well-known, the debate about which one is the longest continues even today. So, which river tops the list?

Which desert is the largest hot desert in the world?

Mon, 24 Nov 2025 07:42:00 +0000

Deserts cover nearly one-third of the Earth’s land area, and they come in many forms—cold deserts, coastal deserts, and hot deserts. But if we look only at hot deserts, one stands far above the rest in size and harshness. Which one is the largest?

What is the smallest independent country in the world?

Mon, 24 Nov 2025 07:15:10 +0000

Some countries are so small that you could walk across them in less than an hour. These tiny nations still have their own government, laws, currency, and international recognition. So, what is the smallest sovereign country on Earth?

Which country has the largest coastline in the world?

Mon, 24 Nov 2025 06:42:10 +0000

The world is full of interesting geographical facts, and one of the most surprising is about coastlines. Some countries may look small on the map but have long coastlines due to their shape and surrounding oceans. So, which country actually has the largest coastline in the world?

What is the significance of traditional festivals in different cultures?

Sun, 23 Nov 2025 12:50:00 +0000

Traditional festivals are celebrated across the world—whether religious, seasonal or cultural. They represent a community’s values, history and identity. Understanding the importance of festivals helps us appreciate cultural diversity.

Why are traditional clothes important in cultural identity?

Sun, 23 Nov 2025 12:25:00 +0000

Traditional clothing reflects the lifestyle, climate and history of a community. Different regions have their own style of dress that carries symbolic meaning and cultural pride.

What is the role of folk music and dance in culture?

Sun, 23 Nov 2025 11:50:00 +0000

Folk music and dance are important aspects of cultural expression. They preserve the stories, emotions and lifestyles of a community, often passed down for centuries.

Why do different cultures perform rituals during weddings?

Sun, 23 Nov 2025 11:10:00 +0000

Weddings across the world include rituals that symbolize love, unity, blessings and cultural values. These traditions vary widely between regions and religions, but all have deep significance.

How do proverbs reflect cultural wisdom and values?

Sun, 23 Nov 2025 10:35:00 +0000

Every culture has proverbs and sayings that express moral lessons, common experiences and practical wisdom. They are short but powerful reflections of how people think and live.

Where are the Ajanta Caves located?

Sun, 23 Nov 2025 06:35:40 +0000

In which Indian state are the famous Ajanta Buddhist caves found?

Who built Fatehpur Sikri?

Sat, 22 Nov 2025 06:32:00 +0000

Who constructed the historic city of Fatehpur Sikri near Agra?

Why do Bollywood movies release on Fridays?

Fri, 21 Nov 2025 10:43:10 +0000

I’ve noticed almost all major Hindi films release on Fridays. Is there a historical reason or marketing strategy behind choosing Friday as the release day?

Which river is known as the "Sorrow of Bengal"?

Fri, 21 Nov 2025 06:33:20 +0000

Which Indian river is often called the "Sorrow of Bengal" due to its frequent floods?

Who was the first President of India?

Thu, 20 Nov 2025 06:34:30 +0000

I want to know who served as the first President after India became a republic.

Who wrote the national song of India?

Thu, 20 Nov 2025 00:50:00 +0000

Who is the author of India's national song, "Vande Mataram"? I want to know its historical background.