GK: Class 12 General Q&A · Page 54
3,658 free answers on GK (General) for Class 12 students, across CBSE, ICSE and State boards.
Question & Answer
Questions
- GeneralClass 12All
What is 0 ÷ 0
Zero divided by zero is mathematically undefined, meaning it has no valid answer within standard arithmetic. Unlike other division operations where zero is involved (such as 0 ÷ 5 = 0, or where dividing any number by zero is undefined), 0 ÷ 0 presents a unique problem because multiple answers could theoretically work. Since any number multiplied by zero equals zero, you could argue that 0 ÷ 0 equals 1, 5, 100, or literally any number, which creates a logical contradiction
- GeneralClass 12All
What number has 100000000000000000000000000000 zeros
A number with 100 octillion zeros (10²⁹ zeros) doesn't have a standard name in conventional numbering systems. To put this in perspective, even a googolplex—10 to the power of a googol, where a googol itself is 10¹⁰⁰—contains far fewer zeros than what you're describing. The number you're asking about would be 1 followed by 100,000,000,000,000,000,000,000,000,000 zeros, which extends far beyond named numbers like centillion or even the largest systematically named numbers
- GeneralClass 12All
How long is an Earth Day
An Earth Day lasts exactly 24 hours, just like any other day on the calendar, observed annually on April 22. The term "Earth Day" refers to the 24-hour period dedicated to environmental awareness, activism, and education, during which events, rallies, educational programs, and cleanup activities take place worldwide. The single day serves as a focal point for the environmental movement, though the spirit and actions it promotes extend throughout the year. However, if asking about the
- GeneralClass 12All
What are 5 facts about Earth
Five essential facts about Earth are: First, Earth is the only known planet in the universe that harbors life, supporting millions of species across diverse ecosystems from deep ocean trenches to high mountain peaks. Second, approximately 71% of Earth's surface is covered by water, with oceans containing about 97% of all water on the planet, making water essential for climate regulation and life support. Third, Earth has a protective magnetic field generated by its molten iron core, which shi
- GeneralClass 12All
पृथ्वी पर एक दिन 24 घंटे क्यों होता है
पृथ्वी पर एक दिन लगभग 24 घंटे का होता है क्योंकि यह अपनी धुरी पर एक पूर्ण घूर्णन पूरा करने में इतना समय लेती है। अधिक सटीक रूप से, एक पूर्ण घूर्णन में 23 घंटे, 56 मिनट और 4 सेकंड लगते हैं, जिसे साइडरियल दिन कहा जाता है। हालांकि, हम 24-घंटे के सौर दिन का उपयोग करते हैं क्योंकि पृथ्वी न केवल घूमती है बल्कि सूर्य की परिक्रमा भी करती है, और सूर्य को आकाश में उसी स्थिति पर वापस आने के लिए वह अतिरिक्त समय आवश्यक होता है। पृथ्वी की घूर्णन गति स्थिर नहीं रही है—अरबों वर्षों में, चंद्रमा
- GeneralClass 12All
How can I protect the Earth
Protecting Earth begins with everyday choices that reduce your environmental footprint and collectively create significant positive impact. Start by minimizing waste through the three Rs—reduce consumption of single-use items, reuse materials whenever possible, and recycle properly according to local guidelines. Conserve energy by switching to LED bulbs, unplugging devices when not in use, adjusting thermostats, and considering renewable energy sources for your home. Reduce water consum
- GeneralClass 12All
Who is called the brother of Earth
Venus is often referred to as Earth's "sister planet" rather than brother, due to similarities in size, mass, composition, and proximity to the Sun. However, the term "brother" isn't commonly used in astronomical contexts regarding Earth's planetary relationships. Venus and Earth are nearly identical in size, with Venus having about 95% of Earth's diameter and 80% of its mass, and both are rocky terrestrial planets formed from similar materials in the inner solar system. Despite these
- GeneralClass 12All
Which day was Earth born
Earth formed approximately 4.54 billion years ago through a process called accretion, where dust and rocks in the solar nebula gradually clumped together through gravitational attraction. This formation wasn't an instantaneous event but rather occurred over tens of millions of years as material orbiting the young Sun collided and merged. Scientists determine this age through radiometric dating of the oldest rocks on Earth, meteorites, and lunar samples, which all point to a formation period s
- GeneralClass 12All
Who named Earth Day
The name "Earth Day" emerged organically from the environmental movement in 1970, though Senator Gaylord Nelson and national coordinator Denis Hayes are credited with establishing the event that carried this name. While no single person can claim to have officially coined the term, it was the most natural and intuitive name for a day dedicated to environmental awareness and action. The simplicity and universality of "Earth Day" made it immediately accessible and memorable, helping to unify di
- GeneralClass 12All
किसके पास 0 चंद्रमा हैं
हमारे सौर मंडल में बुध और शुक्र के पास शून्य प्राकृतिक उपग्रह या चंद्रमा हैं। बुध, सूर्य के सबसे निकट का ग्रह, संभवतः अपनी निकटता के कारण चंद्रमा की कमी है—सूर्य का गुरुत्वाकर्षण खिंचाव किसी भी संभावित उपग्रह को अस्थिर बना देगा। शुक्र, जो आकार और संरचना में पृथ्वी के समान है, भी चंद्रमा के बिना है, हालांकि कारण कम स्पष्ट हैं और संभवतः इसके निर्माण इतिहास और विकास से संबंधित हैं। ग्रहों के बीच चंद्रमाओं की संख्या में अंतर आकर्षक है—जबकि पृथ्वी के पास एक चंद्रमा है, मंगल के
- GeneralClass 12All
How much is a ticket for Waste of Wonder
"Waste of Wonder" is not an official monument or attraction, so there is no standard ticket price for something by that exact name. It's possible you may be referring to "Waste to Wonder Park" located in New Delhi, India, which is a theme park featuring replicas of the Seven Wonders of the World made from industrial and other waste materials as an environmental initiative. If this is what you're asking about, the entry fee for Waste to Wonder Park in Delhi is quite affordable approximately ₹5
- GeneralClass 12All
What are the 2 days of Holi
Holi is celebrated over two main days, each with distinct rituals and significance. The first day is Holika Dahan (also called Choti Holi), observed on the evening of the full moon (Purnima) in the Hindu month of Phalguna. Communities gather to light bonfires symbolizing the victory of good over evil, commemorating the story of Prahlad's devotion and the burning of the demoness Holika. People perform parikrama (circumambulation) around the bonfire, offer prayers, and sing tra
- GeneralClass 12All
Why do they celebrate Holi
Holi is celebrated primarily to mark the victory of good over evil and the arrival of spring, blending mythology, harvest traditions, and social renewal into one vibrant festival. The most prominent legend involves Prahlad, a devout follower of Lord Vishnu, who survived his aunt Holika's attempt to kill him in a fire due to his unwavering faith—Holika, who had immunity to fire, perished instead while Prahlad emerged unharmed. This story reinforces the triumph of devotion and righteousne
- GeneralClass 12All
Is Holi a festival of love
Yes, Holi is deeply associated with love, though it encompasses multiple dimensions of this emotion beyond romantic love alone. The festival's most iconic connection to love comes from the legend of Lord Krishna and Radha—Krishna, known for his dark complexion, playfully applied colors to Radha's fair face to make her resemble him, initiating the tradition of playing with colors. This divine love story represents not just romantic attraction but spiritual devotion, playful intimacy, and
- GeneralClass 12All
Is Holi only one day
No, Holi is not just one day but spans two main days with distinct rituals and celebrations, and in some regions, festivities extend even longer. The first day is Holika Dahan (also called Choti Holi), observed on the evening of Phalgun Purnima (full moon), when communities gather to light bonfires symbolizing the victory of good over evil and commemorating the legend of Prahlad's devotion. People perform rituals around the bonfire, sing traditional songs, an
- GeneralClass 12All
Is Holi a god festival
Yes, Holi is fundamentally a Hindu religious festival with deep mythological and spiritual significance, though it has also evolved into a widely celebrated cultural and social event that transcends strictly religious boundaries. The festival is rooted in Hindu mythology and honors multiple divine narratives—primarily the stories of Lord Krishna's playful application of colors on Radha and the gopis of Vrindavan, and the legend of Prahlad's devotion to Lord Vish
- GeneralClass 12All
Which god started Holi
Holi is primarily associated with Lord Krishna, whose playful and colorful interactions with Radha and the gopis (cowherd maidens) of Vrindavan established the tradition of playing with colors. According to Hindu mythology, young Krishna was insecure about his dark complexion compared to Radha's fair skin, and his mother Yashoda teasingly suggested he apply color to Radha's face to make them look alike. Krishna playfully colored Radha and the gopis, initiating the joyful trad
- GeneralClass 12All
पृथ्वी दिवस हर साल 22 अप्रैल को है
हां, पृथ्वी दिवस प्रतिवर्ष 22 अप्रैल को मनाया जाता है और 1970 में इसकी शुरुआत से यह तारीख स्थिर बनी हुई है। यह निरंतरता वैश्विक स्तर पर पर्यावरण जागरूकता और देशों, समय क्षेत्रों और समुदायों में समन्वित कार्रवाई के लिए एक विश्वसनीय क्षण बनाने में मदद करती है। इस तिथि को रणनीतिक रूप से संयुक्त राज्य अमेरिका में वसंत अवकाश और अंतिम परीक्षाओं के बीच चुना गया था ताकि मूल आयोजन में छात्रों की भागीदारी अधिकतम हो सके। अपरिवर्तित तिथि ने पृथ्वी दिवस को पर्यावरण कैलेंडर में एक मान्यता प्राप्त म
- GeneralClass 12All
What is the special of April 22
April 22 is significant as the date chosen for Earth Day, the world's largest environmental movement bringing together over a billion people annually to demonstrate support for environmental protection. The date was strategically selected for the first Earth Day in 1970 because it fell between spring break and final exams at American colleges and universities, maximizing student participation. Additionally, the timing coincides with spring in the Northern Hemisphere, when nature's renewal mak
- GeneralClass 12All
Who is called the father of Earth Day
Senator Gaylord Nelson is widely recognized as the father of Earth Day for founding the observance in 1970. As a U.S. Senator from Wisconsin, Nelson was deeply concerned about environmental degradation and frustrated by the lack of political attention to ecological issues. Inspired by the student anti-war movement and galvanized by the devastating 1969 Santa Barbara oil spill, he conceived the idea of a national teach-in on the environment to force environmental protection onto the national p