Question Discussion & Solution

The correct answer is X-Ray.

• Electromagnetic (EM) radiation includes radiation via radio waves, microwaves, X-rays and gamma rays.

Key Points

• Electromagnetic (EM) radiation is a form of energy that is all around us and takes many forms.
• Electromagnetic (EM) radiation includes radiation via radio waves, microwaves, X-rays and gamma rays.
• Sunlight is also a form of EM energy.

​Additional Information

• ​EM radiation spans an includes a range of wavelengths and frequencies.
• This range is known as the electromagnetic spectrum.
• The EM spectrum is generally divided into seven regions:
  • Radio waves,
  • Microwaves,
  • Infrared (IR),
  • Visible light,
  • Ultraviolet (UV),
  • X-rays,
  • Gamma rays.

Important Points

• Radio waves have the longest wavelength.
• Gamma rays have the shortest wavelength.

Rickshaw, bus and train are the means of transport.

Mobile and radio are the means of communication, so out of the given options only letter is a mean of communication.

The correct answer is Subscript.

Key Points

• CTRL+EQUAL SIGN Apply subscript formatting.
• CTRL+SHFT+PLUS SIGN Apply superscript formatting.

Additional Information

• CTRL+SHFT+> Increase the font size.
• CTRL+SHFT+< Decrease the font size.
• CTRL+] Increase the font size by 1 point.
• CTRL+[ Decrease the font size by 1 point. 

• Direct memory access (DMA) is a feature of computer systems that allows certain hardware subsystems to access main system memory (RAM), independent of the central processing unit (CPU)
• Disk drive is a hardware subsystem

The correct answer is 5.

Key Points

• Livestock census is conducted in India every 5 years. 
• So far, 20 livestock censuses have been conducted.
• For the first time, livestock data were collected online in the 20^th Livestock Census.
• Advance technology has been adopted to collect data through tablet computers.

Additional Information

• The first livestock census was conducted in 1951.
• West Bengal has the highest population of livestock in India.
• The total population of Goat is 64.6 million.
• The total population of livestock in India is 535.8 million.