Question Discussion & Solution

Refrigerator, furniture and television are needed in one house but these are not the necessary things. Without these three a house can be built but without the walls a house cannot be built.

the correct answer is MS-DOS.

MS-DOS is not a GUI-based operating system

Key Points

• MS-DOS is a text-based operating system, meaning that a user works with a keyboard to input data and receives output in plain text. Later, MS-DOS often had programs using a mouse and graphics to make work more simple and quick.
• MS-DOS is a non-graphical command line operating system derived from 86-DOS that was created for IBM-compatible computers.
• MS-DOS allows the user to navigate, open, and otherwise manipulate files on their computer from a command line instead of a GUI like Windows.

Important Points

• Some popular, modern graphical user interface examples include:
  • Microsoft Windows,
  • macOS, Ubuntu Unity,
  • GNOME Shell for desktop environments, and
  • Android,
  • Apple's iOS,
  • BlackBerry OS,
  • Windows 10 Mobile,
  • Palm OS-WebOS, and
  • Firefox OS for smartphones.

​Additional Information 

• Graphical User Interface (GUI) 
  • The graphical user interface is used by the most commercially popular computer operating systems 
  • A Graphical User Interface (GUI) allows you to enter commands by pointing and clicking at objects that appear on the screen.
  • It consists of picture-like items (icons and arrows for example).
  • In most operating systems, the primary user interface is graphical.

The correct answer is 16%.

• The Tourism sector contributes about 16% to the total economy of Rajasthan.

Key Points

• Tourism in Rajasthan:
  •  

Concept-

• DNA stands for Deoxyribonucleic acid.
• DNA as an acidic substance present in the nucleus was first identified by Friedrich Meischer in 1869.
• He named it ‘Nuclein’.
• DNA acts as the genetic material in most organisms.
• A DNA molecule consisting of all the genetic material of an organism is known as a chromosome.
• These are thread-like (helical) structures of protein and nucleic acids which​ carry all the genetic information in the form of genes.

Explanation-

• ​Deoxyribonucleic acid (DNA) is a nucleic acid and is therefore made up of nucleotide.
• Each nucleotide consists of a phosphate group, a nitrogenous base (A, T, G, C), and ribose sugar (deoxyribose in case of DNA).
• A nucleoside contains only pentose sugar and a nitrogenous base.
• Deoxyribonucleic acid (DNA) and ribonucleic acid (RNA) are the two types of nucleic acids found in living systems.
• DNA is a long polymer of deoxyribonucleotides.
• The length of DNA is usually defined as the number of nucleotides (or a pair of nucleotides referred to as base pairs) present in it.

Thereby DNA is composed only of nucleic acid.

Additional Information

Lipids: 

• ​These organic compounds are nonpolar molecules, which are soluble only in nonpolar solvents and insoluble in water because water is a polar molecule.
• In the human body, these molecules can be synthesized in the liver and are found in oil, butter, whole milk, cheese, fried foods, and also in some red meats.

Proteins:

• Proteins are composed of amino acids, arranged into different groups.
• These fundamental amino acid sequences are specific and their arrangements are controlled by the DNA. 
• These are the fundamental building blocks of our bodies.
• They are large and complex macromolecules or bio-molecules which perform a major role in the functioning and regulating of our body cells, tissues, and other organs in the human body.​

The correct answer is Penalty for sexual harassment and breach of a woman's dignity.

• The main issue of Section 354 of the Penal Code highlights the Penalty for sexual harassment and breach of a woman's dignity.

Key Points

• Section 354 of the Indian Penal Code:
  • It states that whoever assaults or uses criminal force to any woman, intending to outrage or knowing it to be likely that he will thereby outrage her modesty, shall be punished with impris­onment of either description for a term which may extend to two years, or with fine, or with both.

Additional Information

• Section 326B of the Indian Penal Code deals with Penalty for throwing acid or attempting to throw.
• Section 498A  of the Indian Penal Code deals with Penalty for dowry harassment and Penalty for domestic violence.