Question Discussion & Solution

The correct answer is Bone.

• Bone:
  • Bone is living, growing tissue. It is made mostly of collagen, a protein that provides a soft framework, and calcium phosphate, a mineral that adds strength and hardens the framework.
  • Osteoporosis, or porous bone, is a disease characterized by low bone mass and structural deterioration of bone tissue, leading to bone fragility and an increased risk of bone fractures.

Additional Information

• Heart:
  • A large proportion of cardiovascular disease is due to atherosclerosis.
  • In atherosclerosis, the walls of your arteries become thick and stiff because of the build up of fatty deposits called plaques. 
• Glomerulonephritis is a group of diseases that injure the part of the kidney that filters blood.
• Asthma, Chronic obstructive pulmonary disease (COPD), Pneumonia are common lung diseases.

Concept:

• Any battery (actually it may have one or more than one cell connected in series) or cell that we use as a source of electrical energy is a galvanic cell where the chemical energy of the redox reaction is converted into electrical energy. 
• In the primary batteries, the reaction occurs only once, and after use over some time battery becomes dead and cannot be reused again.
• The most familiar example of this type is the dry cell (known as Leclanche cell after its discoverer) which is used commonly in our transistors and clocks. 
• The cell consists of a zinc container that also acts as anode and the cathode is a carbon (graphite) rod surrounded by powdered manganese dioxide and carbon.
• The space between the electrodes is filled by a moist paste of ammonium chloride (NH4Cl) and zinc chloride (ZnCl2). 

Explanation:

• The cell consists of a zinc container that acts as the anode.
• The cathode is a carbon (graphite) rod surrounded by a cathodic material powder of manganese dioxide and carbon.

So, The positive pole of the dry cell is made up of C (carbon).

The correct answer is Deforestation.

• Deforestation is not related to conservation of land resources.

Key Points

• The felling and clearing of forest cover or tree plantations to accommodate agricultural, industrial or urban use is Deforestation.
• Deforestation can also be seen as removal of forests leading to several imbalances, both ecologically and environmentally.
• According to the Global Forest Resources Assessment 2020 (FRA 2020) report, the rate of forest loss has declined in the period of 1990-2020.
• The world’s total forest area is 4.06 billion hectares (bha), which is 31% of the total land area.

Additional Information

• The FRA is released by the United Nations Food and Agriculture Organization (FAO).
• Restriction on overgrazing is done to reduce Negative effects of grazing which include overgrazing, increased soil erosion, compaction and degradation, deforestation.
• Land reclamation is the process of creating new land from oceans, seas, riverbeds or lake beds.
• Regulated use of fertilizer controls the movement of water and nutrients within the plant.

The correct answer is DBMS.

Key Points

• DBMS is NOT antivirus software.
• A database is a collection of related data that depicts a real-world situation. A database system is made to be developed and filled with information for a certain activity.
• A database management system (DBMS) is software that stores and retrieves data for users while taking proper security precautions. It is made up of a collection of applications that manipulate the database.
• The DBMS accepts an application's request for data and informs the operating system to give the requested data.
• A database management system (DBMS) aids users and other third-party applications in storing and retrieving data in huge systems.
• Users can design their own databases using a database management system (DBMS).
• The term "DBMS" refers to the database user as well as other application applications. It serves as a link between the data and the software program.

• McAfee Corp. is a San Jose, California-based global computer security software corporation.
• Avast Antivirus is a cross-platform internet security suite created by Avast for Microsoft Windows, macOS, Android, and iOS.
• Avira Operations GmbH & Co. KG is a German multinational computer security software firm best known for its Avira Free Security antivirus software. 

The correct answer is Tobacco.

• In 2019, the Medical and Health Department of the Government of Rajasthan was awarded by the World Health Organization for control over Tobacco.

Key Points

• The Medical & Health Department of Rajasthan launched various campaigns against tobacco consumption at places such as schools, colleges, police stations, and government offices during 2018-19.
• As part of the tobacco-free initiatives, 1.13 crore people took a pledge against tobacco consumption at the events held in 1.56 lakh government institutions on January 30 this year, marking Martyrs’ Day.
• The award was received by the  Medical & Health Department's Additional Chief Secretary, Rohit Kumar Singh on behalf of the government

Additional Information

• World Health Organisation:
  • Established in 1948
  • Headquarters: Geneva, Switzerland.