Question Discussion & Solution

Given: Painter : Brush :: Author : ?

The logic followed here is: 

Painter uses Brush to paint.

Similarly, 

Author uses Pen to write.

Hence, pen is the correct answer.

Similar figure repeat in every second step. Each time the first figure reappear it rotates one space anticlockwise direction and each time the second figure reappear it rotates one space clockwise direction.

From the above explanation we can conclude (1), (3) and (5) are same figure with anticlockwise rotation.

Explanation:

Composting is one of the options for the treatment of solid waste. In the composting process, the organic matter breaks down under bacterial action resulting in the formation of humus like material called compost.

• Vermicomposting: It involves the use of earthworms for composting organic solid waste. It is a resourceful way to recycle your food waste into compost. It takes about 2-3 months.
• Vermicompost (worm manure) is the end-product of the breakdown of organic matter by earthworms. 
• This process of increasing the fertility of soil by earthworms is known as vermicomposting.

Hence, fertilizer produced by the earthworm is called Vermicompost.

Additional Information

Biofertilizers: 

• ​Is a substance that contains living micro-organisms that, when applied to seeds, plant surfaces, or soil, colonize the rhizosphere or the interior of the plant and promotes growth by increasing the supply or availability of primary nutrients to the host plant. 
• Biofertilizers add nutrients through the natural processes of Nitrogen fixation.
• Examples: Rhizobium, Azotobacter, Blue-green algae, Azospirilium.

Nitrogen fertilizer:

• Urea, also known as carbamide, is an organic compound with the chemical formula CO(NH₂)₂.
• This amide has two –NH₂ groups joined by a carbonyl functional group.
• Urea serves an important role in the metabolism of nitrogen-containing compounds by animals and is the main nitrogen-containing substance in the urine of mammals.
• The main function of Urea fertilizer is to provide the plants with nitrogen to promote green leafy growth and make the plants look lush.
• Urea has the highest nitrogen content of all solid nitrogenous fertilizers in common use.

The correct answer is Single-User Operating System.

Important Points

• Single-User Operating System
  • Performs a single task for Single-user.
  • This operating system is designed to manage the computer so that one user can effectively do one thing at a time.
  • Examples include Microsoft Windows.

Additional Information

• The different types of Operating System:
• Batch Operating System
  • There is no direct communication between the computer and the OS.
  • There is an intermediate, the Operator.
  • The operator distributes the work into batches.
• Real-Time Operating System
  • The processing time is very small between the user’s command and the output such that there is no operator.
• Time-Sharing Operating System
  • Multiple people at various computers can use a program at the same time.
• Distributed Operating System
  • When two or more systems are connected to each other and one can open each other's files.
• Embedded Operating System
  • These special Operating systems are built into larger systems.
  • They are limited to single specific functions like an ATM.
• Network Operating System
  • They have one main server which is connected to other client servers.
  • It provides a secure operating system for working with multiple users.

The correct answer is 14-Nov-2012.

• The POSCO Act was enacted on 14-Nov-2012.

Key Points

• The POSCO Act,2012:
  • The act is an acronym Protection Of Children from Sexual Offences Act.
  • The act was enacted on June 19, 2012.
  • It was enforced on November 14, 2012.
  • The act was enacted to protect children from offences of sexual assault, sexual harassment, and pornography and safeguard the interest and well-being of children.
  • According to the act, the definition of a child is any person below eighteen years of age.
  • It also defines different forms of sexual abuse which include penetrative and non-penetrative assault as well as sexual harassment and pornography.