Question Discussion & Solution

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.

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• 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 in 1957.

• Rajasthan State Sports Council was established in 1957.

Key Points

• Rajasthan State Sports Council is the premier body in Rajasthan at the State level which looks after the development of sports activities and providing coaching to the state players.
• It was set up in the year 1957.
• Its headquarters is in Jaipur, Rajasthan.
• Ashok Chandna is the current sports minister of Rajasthan.

All except 'Facebook' are name of search engine while 'Facebook' is the name of one of the social media.

The correct answer is Bit.

Key Points

• Bit 
  • ​A bit or binary digit is the smallest unit of measurement used to quantify computer data.
  • It contains a single binary value of 0 or 1.
  • A single bit can define a boolean value of True(1) or False(0).
  • Generally, data transfer rates are measured in bits.
•  Binary Number System
  • ​It contains two unique digits 0s and 1s.
  • It is also known as the Base 2 system.
  • The binary numbers 0 and 1 are called a bit.
  • The computer always calculates input in binary form.
  • Gottfried Wilhelm Leibniz developed the binary system

Additional Information

• Byte
  • ​A byte is a unit of digital information that most commonly consists of eight bits.
  • A byte is the number of bits used to encode a single character of text in the computer.
• Nibble 
  • ​A nibble is a four-bit aggregation or half an octet.
  • it is also known as half-byte or tetrad.
• BCD
  • ​In computing and electronic systems, binary-coded decimal is a class of binary encodings of decimal numbers where each digit is represented by a fixed number of bits.
  • It is implemented in the instruction set of machines.

The Correct Answer is Option 1 i.e Baking powder.

• Baking powder:
  • Baking powder is a mixture of baking soda and tartaric acid .
  • Tartaric acid has been added to baking powder to neutralize the bitterness produced by sodium bicarbonate (NaHCO₃) .
• Baking soda:
  • It is commonly known as sodium bicarbonate.
  • Sodium bicarbonate is a white crystalline solid.
  • It is used in baking products like cakes, cookies etc.
• Washing Soda:
  • It is commonly known as Na2CO3 or sodium carbonate.
  • It is used in softening of hard water.
  • It is commonly used as a cleaning agent for domestic purposes.It is also used in the manufacturing of paper, soap, textiles, paints, etc.
• Vinegar:
  • Vinegar is produced from fermentation of alcohol.
  • Vinegar is the natural source for acetic acid.
  • It is widely used as a flavouring agent in most of the cuisines.