Question Discussion & Solution

Biosphere reserves are areas of terrestrial and coastal ecosystems that promote the conservation of biodiversity with its sustainable use. 

• They are internationally recognized within the framework of UNESCO’s Man and Biosphere (MAB) program and nominated by national governments.
• There are over 500 biosphere reserves in over 100 countries around the world.
• There are 18 notified Biosphere reserves in India.
• Out of them, 11 Biosphere Reserves are in UNESCO’s MAB World Network. 

Important Points

Biosphere Reserves and their respective years of including in the MAB network are as follows:

• ​Nilgiri (2000)
• Gulf of Mannar (2001)
• Sunderban (2001)
• Nanda Devi(2004)
• Nokrek (2009)
• Pachmarhi(2009)
• Similipal (2009)
• Achanakmar-Amarkantak Biosphere Reserve (2012)
• Great Nicobar Biosphere Reserve (2013)
• Agasthyamala Biosphere Reserve (2016)
• Khangchendzonga Biosphere Reserve(2018)

From the above, we can conclude that Nilgiri Biosphere Reserve is the first Biosphere reserve in India.

Additional Information​ 

Nilgiri Biosphere reserve:-

• ​The Nilgiri Biosphere Reserve was the first and Oldest biosphere reserve in India established in the year 1986.
• It is located in the Western Ghats and includes 2 of the 10 biogeographical provinces of India.
• The Nilgiri Biosphere Reserve falls under the biogeographic region of the Malabar rain forest.
• The Mudumalai Wildlife Sanctuary, Wayanad Wildlife Sanctuary Bandipur National Park, Nagarhole National Park, Mukurthi National Park, and Silent Valley are the protected areas present within this reserve.

The correct answer is Prime minister.

Key Points

• Prime Minister is the ex-officio chairman of the NITI Aayog in India.
• NITI Aayog is an executive body, that was established by the government in 2015, through an executive resolution.
• The newly created body replaced the erstwhile planning body- the Planning Commission of India.
• The term NITI stands for National Institution for Transforming India.
• NITI Aayog is a think tank that advises the government in policy formulation, unlike the Planning commission which was empowered to allocate and distribute funds for the planning.
• NITI Aayog's main focus areas are cooperative & competitive federalism, decentralized planning, scenario planning, capacity building, etc.

Additional Information

• Full-Time Organisational Framework:
  • Chairman: Prime Minister
  • Vice Chairperson: Rajiv Kumar
  • Chief Executive Officer (CEO)- Shri Amitabh Kant
  • Full-Time members- Shri VK Saraswat (former DRDO Chief), Prof. Ramesh Chand (Agriculture Expert), and Dr. VK Paul (Public Health expert)
  • Ex-officio members: maximum 4 
  • Special Invitees: Experts and practitioners as appointed by the Prime Minister.

The correct answer is the formula bar.

Key Points

• By using the Defined names, the user can make the formulas much easier to understand and maintain.
• The user can define a name for a cell range, function, constant, or table. With the practice of using names in the workbook, the user can easily update, audit, and manage these names.
• The user Defined names will appear in the formula bar. 

Additional Information

• Steps to define names from a selected range
  • Select the range you want to name, including the row or column labels.
  • Select Formulas > Create from Selection.
  • In the Create Names from Selection dialog box, designate the location that contains the labels by selecting the Top row, Left column, Bottom row, or Right column check box.
  • Select OK.
• Steps to use names in formulas
  • Select a cell and enter a formula.
  • Place the cursor where you want to use the name in that formula.
  • Type the first letter of the name, and select the name from the list that appears.
  • Or, select Formulas > Use in Formula and select the name you want to use.
  • Press Enter.
• How to manage names in your workbook with Name Manager
  • On the Ribbon, go to Formulas > Defined Names > Name Manager. You can then create, edit, delete and find all the names used in the workbook. 

The correct answer is option 2 i.e C₄H_10.

Concept:

Hydrocarbons

• Compounds made of carbon and hydrogen atoms only are called hydrocarbons.
• Saturated hydrocarbons:
  • The hydrocarbons in which carbon atoms are singly bonded are called saturated hydrocarbons.
  • Saturated hydrocarbons are also called alkanes or paraffin.
    • The general formula of alkane– CnH2n+2.
• Unsaturated hydrocarbons:
  • The hydrocarbons in which carbon atoms are either doubly or triply bonded are called unsaturated hydrocarbons.
  • Doubly bonded (carbon atoms) hydrocarbons are called alkenes.
  • The general formula of alkene is CnH2n.

• The formula for alkane should be mentioned C_nH_2n+2

Explanation:

• 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