Question Discussion & Solution

The correct answer is Hydrocarbons.

Key Points

• The compounds which are formed by the covalent bond between carbon & hydrogen, are known as hydrocarbons.
• These are also known as 'parent compound'.
• Carbon is placed in the Second period.
• The atomic number of carbon is 6 while the weight is 12.
• Carbon needs 4 electrons to complete the octet state and it is full filled by covalent bonds.

Additional Information

•  Examples of Hydrocarbon.
• Natural Gas:
  • Natural gas contains 97% of Methane.
  • It is a colourless highly flammable gaseous hydrocarbon.
  • It is used as fuel for generating electricity and heat.
  • Natural gas is a compressed form that is used as fuel for vehicles which is known as CNG.
  • This is used for making fertilizers also, mainly ammonia.
• Methane:
  • Methane was discovered by the Italian scientist Alessandro Volta between 1776-1778 while he was studying the gases found in marshy land.
  • Melting Point- -182.5 degree
  • Boiling point- -161.5 degree
  • Methane gas is colourless and is less dense than water.
  • This gas is highly inflammable. While burning with oxygen it has a bluish flame.

The correct answer is Camel.

Key Points

• The state animal of Rajasthan is Camel.
• Camel was adopted as the state animal of Rajasthan to control the decreasing number of camels in the state. 
• It was adopted in 2014 by the Rajasthan state government.

Additional Information

• State Bird: Great Indian Bustard.
• State Animal (Wildlife) - Chinkara
• State Flower: Rohida.
• Chinkara is also the official animal of Rajasthan.
• National Park: Sariska National Park, Ranthambore National Park, Desert National Park, and Keoladeo Ghana National Park.
• Geographical indication: Kota Doria, Kathputlis, Blue pottery, Molela, clay work, Sanganeri Hand Block Printing, Phulkari, Bikaneri Bhujia, Bagru hand block print, Thewa artwork, Makrana marble.

The correct answer is ​Heat is absorbed.

Key Points

•  When ice is converted into water heat is absorbed by the ice, so the molecules of ice increase their energy and convert into water. Hence option A is correct.
• Additional Information
• The conversion of ice into water is an example of melting. If you took out the ice cubes from the freezer and placed them in a warm room, the ice would absorb energy from the warmer air around them. This absorbed energy would facilitate them to overcome the force of attraction holding them together, enabling them to slip out of the fixed position that they held as ice. The process in which solids change to a liquid is called melting. The melting point is the temperature at which a solid changes to a liquid. 
• The static water is converted to ice It means when the water is converted into ice its potential energy decreases. 
• If we compare the kinetic and potential energy of the water vapor, water and ice then water vapor has the most kinetic as well as potential energy as compared to water and ice.
• This is because the particle of water vapor is free to move and they can move more vigorously. Please note that kinetic energy is associated with moving objects whereas potential energy is associated with a static object. 

The correct answer is Jaipur.

• The Legislative Assembly of Rajasthan is located at Lalkothi, Jaipur.

Key Points

• Legislative Assembly of Rajasthan ​
  • The Legislative Assembly of Rajasthan is located at Lalkothi, Jaipur.
  • Presently, it comprises 200 members who are directly elected from single-seat constituencies.
  • The building of the Rajasthan Legislative Assembly is one of the most modern legislature complexes in India. Situated in a sprawling 16.96 acres campus - in Jyoti Nagar, Jaipur.
  • Work on this project commenced in November 1994 and was completed in March 2001.
  • The exterior of the building has been provided with famous traditional features of Rajasthan such as Jharokas, Chhatries, Kamani, Baradaries, Arches, Todies, etc. in Jodhpur and Bansi Paharpur stone.
  • The interior entrance lounges have been decorated in the famous Rajasthani traditional art on walls and ceilings representing the traditional art of four regions of Jaipur, Shekhawati, Marwar, and Mewar. 

Additional Information

• 15^th Rajasthan Legislative Assembly
  • Governor, Rajasthan
    • Shri Kalraj Mishra
  • Speaker, Rajasthan Legislative Assembly
    • Dr. C.P. Joshi
  • Chief Minister Rajasthan
    • Sh. Ashok Gehlot

The correct answer is Desktop.

• The first screen which appears when windows are loaded is called Desktop.

Key Points 

• Desktop
  • The first screen which appears when windows are loaded is called Desktop.
  • As soon as we open the computer we come across the Windows welcome screen which displays many small pictures on the screen of the monitor.
    • This screen is known as the desktop.
  • The small pictures on the screen are known as icons.

Additional Information

• File Folder
  • ​A file is the common storage unit in a computer, and all programs and data are "written" into a file and "read" from a file.
  • A folder holds one or more files, and a folder can be empty until it is filled. 
• Recycling Bin
  • ​A recycling bin (or recycle bin) is a container used to hold recyclables before they are taken to recycling centers. 
  • Recycling bins exist in various sizes for use inside and outside homes, offices, and large public facilities.
• Recently Added Screen
  • ​A typical “Recently Added” section looks like at the top of the Start menu app list.
  • It's a small area that shows the names and icons of recently installed apps.