GK: Class 12 General Q&A · Page 18
3,658 free answers on GK (General) for Class 12 students, across CBSE, ICSE and State boards.
Question & Answer
Questions
- GeneralClass 12All
What is √28 equal to?
The value √28 is equal to 2√7 in its simplest radical form, or approximately 5.2915026221 when expressed as a decimal. This equivalence demonstrates an important principle in mathematics: the same value can be represented in multiple ways, each useful for different purposes. The radical form 2√7 is considered the "exact" representation because it maintains mathematical precision without any rounding, while the decimal form provides a practical numerical approximation for cal
- GeneralClass 12All
What is the square root of 28?
The square root of 28 is a mathematical value that, when multiplied by itself, equals 28. In its exact form, it's written as √28, and in decimal form, it equals approximately 5.2915026221. This concept is fundamental in Class 10 mathematics, particularly when studying chapters on real numbers, algebra, and geometry. Understanding square roots is essential because they appear frequently in various mathematical applications, from solving quadratic equations to calculating distances using
- GeneralClass 12All
How can I find the exact dawn time for my location?
You can find accurate dawn times by: Checking local weather apps Using sunrise/sunset calendars Searching “dawn time today in [your city]” Most tools calculate civil dawn automatically based on your location and date.
- GeneralClass 12All
Why do people associate dawn with new beginnings?
Dawn has long been associated with renewal because it represents: The transition from darkness to light The start of daily activity Natural rhythms of waking and movement Culturally and biologically, increasing light signals alertness, which is why dawn often feels symbolic and energizing.
- GeneralClass 12All
Why does dawn feel longer or shorter in different places?
The length of dawn depends mainly on latitude: Near the equator: dawn is short and quick Closer to the poles: dawn can last hours, especially near summer This happens because the sun’s path crosses the horizon at different angles around the Earth.
- GeneralClass 12All
Is dawn the beginning of a new day?
From a natural perspective, dawn often feels like the beginning of a new day. From a timekeeping perspective, a new day officially starts at midnight. Midnight is used because it provides a consistent, measurable reference point, even though it doesn’t align with daylight.
- GeneralClass 12All
Does dawn time change every day?
Yes. Dawn time changes slightly each day due to Earth’s orbit and axial tilt. Dawn comes earlier in spring and summer Dawn comes later in fall and winter The daily change is gradual but noticeable over weeks.
- GeneralClass 12All
What are civil, nautical, and astronomical dawn?
These are scientific classifications of dawn based on how far the sun is below the horizon: Astronomical dawn (18° below): Very faint light; sky still mostly dark Nautical dawn (12° below): Horizon becomes visible; used in navigation Civil dawn (6° below): Enough light for most outdoor activities When people ask “what time is dawn,” they usually mean civil dawn
- GeneralClass 12All
What is the difference between dawn and dusk?
Dawn and morning are not the same: Dawn happens before sunrise and is part of twilight Morning begins after sunrise and continues until around noon Dawn is a natural lighting phase, while morning is a broader part of the day used in everyday timekeeping.
- GeneralClass 12All
What is the difference between dawn and sunrise?
The key difference is timing and definition: Dawn: A period of gradually increasing light before the sun appears Sunrise: A specific moment when the sun becomes visible above the horizon Think of dawn as a process, and sunrise as a single event.
- GeneralClass 12All
What is the first light of dawn?
The first light of dawn is the moment when natural light becomes faintly visible in the sky, even though the sun is still below the horizon. This is often called civil dawn, which occurs when the sun is about 6 degrees below the horizon. At this point: Outdoor objects become distinguishable Artificial lighting may still be needed The sky often appears blue or pinkish
- GeneralClass 12All
How long before sunrise does dawn start?
Dawn usually starts about 30–90 minutes before sunrise, depending on latitude and time of year. Near the equator: closer to 30 minutes Mid-latitudes: around 45–60 minutes High latitudes: 90 minutes or more This variation happens because the sun’s angle relative to the horizon changes based on Earth’s tilt and your position on the globe.
- GeneralClass 12All
Is dawn before sunrise or after?
Dawn always occurs before sunrise. Sunrise is the moment when the sun’s upper edge first appears above the horizon, while dawn refers to the gradual increase in natural light leading up to that moment. In short:Night → Dawn → Sunrise
- GeneralClass 12All
What time is dawn?
Dawn is the period before sunrise when the sky begins to lighten but the sun is not yet visible. There is no single fixed time for dawn—it depends on your location, date, and season. In most places, dawn typically begins 30 to 90 minutes before sunrise. Helpful tip: The closer you are to the equator, the shorter dawn tends to be. At higher latitudes, dawn can last much longer, especially in summer.
- GeneralClass 12All
Initially as the angle of incidence increases gradually
This statement describes the behavior of light refraction, specifically addressing how the angle of refraction changes as the angle of incidence increases when light passes from a denser medium (like glass or water) to a less dense medium (like air). Initially, as the angle of incidence increases gradually from zero, the angle of refraction also increases but at a faster rate according to Snell's Law: n₁ sin θ₁ = n₂ sin θ₂, where n₁ and n₂ are refractive indices and θ₁ and &
- GeneralClass 12All
Find the incorrect pair in every set
This type of question presents multiple pairs or groups where elements are related in some way (word-meaning, chemical formula-name, country-capital, cause-effect, etc.), with one pair being incorrect due to mismatch, error, or broken pattern. These questions test: pattern recognition, subject knowledge, attention to detail, and analytical thinking. To solve: (1) identify the relationship pattern in correct pairs, (2) check each pair against this pattern, (3) spot the pair that breaks the rul
- GeneralClass 12All
Where was the house situated
This question typically refers to a specific literary text or comprehension passage, most commonly appearing in examination contexts where students read a passage and answer questions about details mentioned. Without the specific text reference, it's impossible to provide the exact answer. However, such questions test reading comprehension skills—the ability to extract explicit information directly stated in texts, requiring careful reading and attention to descriptive details about set
- GeneralClass 12All
I mama
This phrase appears incomplete or could refer to several possibilities: (1) In some Indian languages, particularly South Indian languages like Telugu, Tamil, or Kannada, "mama" refers to maternal uncle (mother's brother), so "I mama" might be attempting to say "my mama" or "my maternal uncle" in code-mixed language common in bilingual speakers. (2) It might be part of a larger phrase or sentence that got truncated. (3) In internet slang or casual texting, "I" might stand for various things an
- GeneralClass 12All
AM full form
"AM" has multiple meanings depending on context: (1) In time notation, AM stands for "Ante Meridiem," Latin for "before midday," designating hours from midnight (00:00 or 12:00 AM) until noon (12:00 PM), part of the 12-hour clock system. For example, 9:00 AM means 9 o'clock in the morning, while 9:00 PM (Post Meridiem—"after midday") means 9 o'clock in the evening. The 12-hour format with AM/PM is common in the United States, India, and several other countries, contrasting with the 24-h
- GeneralClass 12All
Kurnool weather
Kurnool, located in Andhra Pradesh's Rayalaseema region, experiences a semi-arid climate characterized by hot summers, moderate monsoons, and mild winters typical of interior southern India away from coastal moderating influences. Temperature patterns vary seasonally: Summer (March-May) is extremely hot with maximum temperatures frequently exceeding 40-45°C (104-113°F), making it one of the hottest periods with intense sunshine and low humidity creating harsh conditions. Monsoon (June