Question Discussion & Solution

The correct answer is Chhattisgarh.

• Mahanadi river originates from the mountainous terrain of Chhattisgarh.

Key Points

• It originates from many mountain rivers with its origin water located in the Dhamtari district of Chhattisgarh.
• The river originates from an extension of the Eastern Ghats.
• It flows in Odisha where it joins the Bay of Bengal.
• Other names of Mahanadi are Kanaknandini, Chitrapalal, Mahasweta, Nilotpala etc.
• Hirakud Dam is built on the Mahanadi. It is the longest earthen dam in the world.​

The correct answer is 98.4° F,

Key Points

• The normal temperature of the human body is 37 °C (98.4° F). 
• A temperature above 100.4 °F(38°C) most often means you have a fever.
• Normal body temperature is also called the normal or core body temperature, which is based on Homeostasis.
• ​Homeostasis is a phenomenon in which the body regulates its functions to keep the internal conditions as stable as possible.
• The normal human body temperature border is typically stated as 36.5–37 °C (97.7–98.6 °F).
• Human body temperature depends on gender, age, time of day, exertion level, health status
  • Also in what part of the body the measurement is taken at.
• Body temperature is kept in the normal range by thermoregulation, in which adaptation of temperature is triggered by the central nervous system.

Thus, the Body temperature of a normal human being is 98.4° F.

The correct answer is Copper.

Key Points

• Conductor of electricity
  • In physics and electrical engineering, a conductor is an object or type of material that allows the flow of charge in one or more directions.
  • Materials made of metal are common electrical conductors. 
  • Copper is considered to be a conductor because it conducts the electron current or flow of electrons fairly easily. Most metals are considered to be good conductors of electrical current. Copper is just one of the more popular materials that are used for conductors. Hence, Option 4 is correct.
  • If you have to define the meaning of electrical conductors in the simplest way, they are materials that allow electricity to flow through them easily.
  • If we compare two types of material and the first one allows better flow of electricity through it, then that material is said to be a good conductor of electricity.
  • An electrical conductor allows the electric charges to easily flow through them. The property of conductors to conduct electricity is called conductivity.
  • Such materials offer less opposition or resistance to the flow of charges.
  • Conducting materials allow easy charge transfer because of the free movement of electrons through them.

Additional Information

• • Some examples of conductors of electricity are
    • Copper
    • Aluminum
    • Silver
    • Gold
    • Graphite
    • Platinum
    • Water
    • People

The correct answer is F11.

• The F11 key can take our screen into and out of full-screen mode quickly and easily. 

​Important Points

• Function key
  • A function key is a key on a computer or terminal keyboard which can be programmed so as to cause an operating system command interpreter to perform certain actions, a form of a soft key.

​ 

• F11​
  • The Most simple use is the F11 key can take our screen into and out of full-screen mode quickly and easily. 
  • F11 key can be used by combined with Shift, Ctrl, Alt keys.
    • Some of the uses of the F11 key in MS Word.
      • SHIFT + F11 = Go to the previous field.
      • CTRL + F11 = Lock a field.
      • CTRL + SHIFT + F11 = Unlock a field.
      • ALT + F11 = Display Microsoft Visual Basic Code.
      • ALT + SHIFT + F11 = Display Microsoft Visual Studio Code.

​Additional Information

• F8
  • ​​We can access the menu by turning on your computer and pressing the F8 key before Windows starts.
• F9
  • F9 will refresh fields in Word and prompt Outlook to send and receive messages.
• F10
  • ​F10 activates the menu bar or Ribbon of an open application.
  • Shift + F10 is the same as right-clicking on a highlighted icon, file, or Internet link. 

The correct answer is Ethanol + Methanol​.

• Ethanol + Methanol​ is denatured alcohol.
• Denatured alcohol is ethanol that has additives to make it poisonous, bad-tasting, foul-smelling, or nauseating to discourage its recreational consumption.
• The term denatured alcohol refers to alcohol products adulterated with toxic and/or bad tasting additives (e.g., methanol, benzene, pyridine, castor oil, gasoline, isopropyl alcohol, and acetone), making it unsuitable for human consumption.
• The most common additive used is methanol (5–10%), giving rise to the term methylated spirits. Denatured alcohol is used as a lower-cost solvent or fuel for home-scale or industrial use.

Key Points

• Denatured alcohol is ethanol or grain alcohol that contains additional chemicals called denaturants that make it unfit for human consumption.
• Denatured alcohol is fine for some types of lab work and as an ingredient in certain products, but it's not safe to drink.
• Ethanol is an organic chemical compound. It is simple alcohol with the chemical formula C₂H₆O.
• Its formula can be also written as CH₃−CH₂−OH or C₂H₅OH and is often abbreviated as EtOH.

Additional Information

• Alcohol (ethanol or ethyl alcohol) is the ingredient found in beer, wine, and spirits that causes drunkenness.
• Alcohol is formed when yeast ferments (breaks down without oxygen) the sugars in different food.