Germanium

Germanium

Germanium Latest News

Recently, in a major defence-tech breakthrough, Hyderabad based company has developed India’s first germanium-free thermal imaging payload for drones.

About Germanium

  • It has the chemical symbol Ge and the atomic number 32.
  • It is a silvery-gray metalloid, intermediate in properties between the metals and the nonmetals. 
  • Properties of Germanium
    • It has a diamond-like crystalline structure, and it is similar in chemical and physical properties to silicon. 
    • It is stable in air and water and is unaffected by alkalis and acids, except nitric acid.
    • It remains of primary importance in the manufacture of transistors and of components for devices such as rectifiers and photocells.
    • It is widely distributed in nature but is too reactive to occur free. 
  • Germanium ores are rare. They are found in small quantities as the minerals germanite and argyrodite.
  • It is extracted as a by-product of zinc production and from coal fly ash. 
  • It is estimated that 75% of worldwide production of germanium is sourced from zinc ores, mainly the zinc sulfide mineral sphalerite, and 25% from coal.
  • Applications: Its main use is to produce solid-state electronics, semiconductors and fiber optic systems.
  • Major Producers
    • The major worldwide producer of germanium is China, responsible for around 60% of total production. 
    • The remaining production of germanium comes from Canada, Finland, Russia, and the United States.

Source: BT

Germanium FAQs

Q1: Which country is the largest producer of Germanium?

Ans: China

Q2: Germanium was used in early generation of which device?

Ans: Transistors

Philippines

Philippines

Philippines Latest News

Recently, a magnitude-6.0 earthquake struck the central Philippine island of Samar.

About Philippines

  • Location: It is an island country of Southeast Asia in the western Pacific Ocean.
  • Water Bodies: It is surrounded by the South China (north and west); Philippine Sea (east); Celebes Sea (south); and by the Sulu Sea to the (southwest). 
  • Capital city: Manila

Geographical Features of Philippines

  • Climate: It majorly consists of tropical and monsoonal types of climate.
  • Highest Point: Mount Apo.
  • Major Rivers: Cagayan River (Philippines’ longest river), Mindanao, Agusan etc.
  • Major Lake: Laguna de Bay
  • Volcano: Mayon Volcano, one of the most active in the country. Other volcanoes are Bulusan and Kanlaon.
  • Natural resources: Timber, petroleum, nickel, cobalt, silver, gold, salt, copper
  • The Philippines is the third-largest producer of geothermal energy globally, after the United States and Indonesia.

Source: TH

Philippines FAQs

Q1: What is the capital of Philippines?

Ans: Manila

Q2: Which strait separates Philippines and Taiwan?

Ans: Luzon Strait

Electronic Gold Receipts

Electronic Gold Receipts

Electronic Gold Receipts Latest News

Recently, the National Stock Exchange of India (NSE) launched Electronic Gold Receipts (EGRs) as a new trading segment.

About Electronic Gold Receipts

  • EGRs are dematerialised securities that represent ownership of physical gold.
  • The underlying gold is stored in SEBI-regulated vaults, and investors hold the receipts in their demat accounts — similar to shares or ETFs.
  • Vault Manager is a new entity registered by SEBI for providing vaulting services for gold deposited for the purpose of creation of EGR.
  • Each EGR is backed by actual gold, ensuring authenticity and standardisation.
  • It is operated under SEBI guidelines.

Working of Electronic Gold Receipts

  • The process starts with depositing physical gold at accredited vaults, which is then converted into EGR units.
  • These units are credited to a demat account and can be traded on the exchange.
  • Investors can also convert EGRs back into physical gold, offering flexibility between digital and physical ownership.
  • Participated By: The EGR ecosystem is designed for a wide set of participants, including jewellers, refiners, traders, and retail and institutional investors.

Source: BS

Electronic Gold Receipts FAQs

Q1: Who issues Electronic Gold Receipts?

Ans: Vault Managers registered with SEBI

Q2: Where are Electronic Gold Receipts traded?

Ans: Stock exchanges like BSE, NSE

Asian Development Bank

Asian Development Bank

Asian Development Bank Latest News

Recently, the Asian Development Bank announced a $70 billion programme to expand energy and digital infrastructure across the ​Asia-Pacific region by 2035. 

About Asian Development Bank

  • It is a multilateral development bank established on 19th December 1966.
  • It is the principal international development finance institution for the Asia-Pacific region.
  • It envisions a prosperous, inclusive, resilient, and sustainable Asia and the Pacific, while sustaining its efforts to eradicate extreme poverty in the region.
  • Its membership is open to other regional countries and non-regional developed countries that are members of the U.N. or of any of its specialized agencies.
  • Members: 69 (50 regional, 19 non-regional).
  • Headquarters: Manila, Philippines.

Governance of Asian Development Bank

  • Board of Governors: One representative from each member country; top policy-making body.
  • Board of Directors: Twelve directors manage operations; eight from regional members, four from non-regional members.
  • President: Chairs the Board of Directors and manages ADB
  • Voting System: Weighted voting based on each country’s capital contribution.
    • Key Shareholders: Five shareholders are Japan and the USA (each with 15.6% of total shares), China (6.4%), India (6.3%), and Australia (5.8%).

Functions of Asian Development Bank

  • Provides Loans: It provides loans and grants to member countries for development projects in infrastructure, social sectors, and environmental sustainability.
  • Technical Assistance: It offers technical assistance and advisory services to improve policy-making, governance, and institutional capacity.
  • Regional Cooperation: It promotes regional cooperation and integration by funding cross-border projects and encouraging trade and investment.
  • Supports private sector: It supports development of private sector by providing financing, guarantees, equity, and mezzanine funds for socially beneficial projects.

Source: Reuters

Asian Development Bank FAQs

Q1: Where is the headquarters of ADB located?

Ans: Manila, Philippines

Q2: When was Asian Development Bank established?

Ans: 1966

Notice to Airmen (NOTAM)

Notice to Airmen

Notice to Airmen (NOTAM)

India recently issued a Notice to Airmen (NOTAM) designating a vast stretch of the Bay of Bengal as a danger zone for a long-range missile test.

About Notice to Airmen (NOTAM)

  • Notice to Airmen, also known as Notice to Air Mission, is a notice containing information concerning the establishment, condition, or change in any aeronautical facility, service, procedure, or hazard, the timely knowledge of which is essential to personnel concerned with flight operations.
  • In short, a NOTAM is a notification from an official body alerting airspace users to hazards along their route, both in the air and on the ground.
  • NOTAMs update pilots about changes in airspace, airports, and equipment that affect aircraft operations. 
  • NOTAMs are issued by national aviation authorities for a number of reasons, such as:
    • Hazards such as air-shows, parachute jumps, and glider or micro-light flying;
    • Flights by important people such as heads of state;
    • Closed runways, taxiways, etc;
    • Unserviceable radio navigational aids;
    • Military exercises with resulting airspace restrictions;
    • Unserviceable lights on tall obstructions;
    • Temporary erection of obstacles near airfields (e.g. cranes).
  • For reasons of conciseness and precision, NOTAMs are encoded, although the code is usually sufficiently self-evident to allow the user to identify a hazard.
  • NOTAMs are communicated by the issuing agency using the fastest available means to all addressees for whom the information is assessed as being of direct operational significance, and who would not otherwise have at least seven days’ prior notification.
  • NOTAMs are typically accessible through online platforms, electronic flight planning tools, and aviation weather services, allowing pilots to conveniently access up-to-date information and make informed decisions regarding their flight activities.
  • Pilots who do not review NOTAMs before flight put themselves (and others) in danger.

Source: IT

Notice to Airmen (NOTAM) FAQs

Q1: What does NOTAM stand for?

Ans: Notice to Airmen (also called Notice to Air Mission).

Q2: What is a NOTAM?

Ans: It is an official notice containing information about changes or hazards in aeronautical facilities, services, procedures, or conditions affecting flight operations.

Q3: Why are NOTAMs issued?

Ans: To alert airspace users about hazards or changes that may affect aircraft operations.

Q4: Who issues NOTAMs?

Ans: National aviation authorities.

Q5: What kind of information do NOTAMs provide to pilots?

Ans: Updates about airspace, airports, equipment, and hazards affecting flight operations.

Tadoba-Andhari Tiger Reserve (TATR)

Tadoba-Andhari Tiger Reserve (TATR)

Tadoba-Andhari Tiger Reserve (TATR) Latest News

The Tadoba-Andhari Tiger Reserve (TATR) in Maharashtra's Chandrapur district unveiled vibrant wildlife statistics during its annual 'Machan Census on Waterholes'

About Tadoba-Andhari Tiger Reserve (TATR)

  • It is located in the Chandrapur district in Maharashtra.
  • It is the largest and oldest tiger reserve in Maharashtra. 
  • It covers an area of 1,727 sq.km. 
  • Established in 1955, the reserve consists of Tadoba National Park and Andhari Wildlife Sanctuary.
  • The word ‘Tadoba’ is derived from the name of the God “Tadoba” or “Taru,” which is praised by local tribal people of this region, and “Andhari” is derived from the name of the Andhari River that flows in this area.
  • It has corridor linkages with Nagzira-Navegaon and Pench Tiger Reserves within the State.
  • It has a hilly topography with an average elevation of 200–350 metres.
  • Drainage: There are two lakes and one waterway in the reserve: Tadoba Lake, Kolsa Lake, and the Tadoba River.
  • Vegetation: The reserve falls in the central plateau province of the Deccan peninsula, with tropical dry deciduous forests and a typical central Indian faunal assemblage.
  • Flora
    • The major tree species are: Teak, Ain, Bamboo, Bija, Dhaoda, Haldu, Salai, Semal and Tendu. 
    • Along the moist areas, species like Mango, Jamun and Arjun are found. Bamboo (Dendrocalamus strictus) is spread over 40% of the habitat. 
  • Fauna
    • Apart from tigers, the reserve is home to Indian leopards, sloth bears, Indian gaur (bison), wild dogs (dholes), striped hyenas, marsh crocodiles, sambar deer, chital (spotted deer), barking deer, and four-horned antelopes (chousingha).
    • It is also a birdwatcher’s paradise, with over 250 species of birds, including crested serpent eagles, grey-headed fish eagles, paradise flycatchers, and hornbills.

Source: DEVD

Tadoba-Andhari Tiger Reserve (TATR) FAQs

Q1: Where is Tadoba-Andhari Tiger Reserve located?

Ans: In Chandrapur district of Maharashtra.

Q2: Which tiger reserves are connected to Tadoba-Andhari through corridors?

Ans: Nagzira-Navegaon and Pench Tiger Reserve.

Q3: What type of vegetation is found in Tadoba-Andhari Tiger Reserve?

Ans: Tropical dry deciduous forest.

INS Sindhukesari

INS Sindhukesari

INS Sindhukesari Latest News

The Indian Navy's Kilo-class submarine, INS Sindhukesari, recently arrived in Colombo for an Operational Turnaround (OTR).

About INS Sindhukesari

  • It is a 3,000-tonne Kilo-class diesel-electric submarine of the Indian Navy.
  • It was commissioned on 19 December 1988.
  • It was designed as part of Project 877 and built under a contract between Rosvooruzhenie, Russia, and the Ministry of Defence (India).
  • Features:
    • It measures 72.6 meters in length and is powered by diesel-electric propulsion.
    • It has an operational endurance of up to 45 days with a crew of around 53 personnel.  
    • It has a maximum diving depth of 300 meters, a speed of up to 18 knots.
    • It is armed with a combination of torpedoes, anti-ship missiles, and mines, and has been retrofitted to carry advanced Klub/3M-54E cruise missiles.

What are Kilo-class submarines?

  • The Kilo Class is the NATO designation for a naval diesel-electric attack submarine designed and built by the Soviet Union (now Russia).
  • The original version of the vessels were designated Project 877 Paltus (Halibut) in Russia.
  • They are mainly intended for anti-shipping and anti-submarine operations in relatively shallow waters.
  • The first Kilo Class submarine entered service in the Soviet Navy in 1980, and the vessel continues to be in service in the Russian Navy.
  • These submarines are 70-74 meters long. It can travel at a maximum speed of 10-12 knots when surfaced and 17-25 knots when underwater.
  • These vessels can carry up to eight surface-to-air missiles and 18 torpedoes or 14 underwater mines.
  • Stealth: Known for extremely low noise levels, earning the nickname “Black Hole” among naval forces.

Source: TI

INS Sindhukesari FAQs

Q1: What type of submarine is INS Sindhukesari?

Ans: A 3,000-tonne Kilo-class diesel-electric submarine.

Q2: When was INS Sindhukesari commissioned?

Ans: 19 December 1988.

Q3: What is the operational endurance of INS Sindhukesari?

Ans: Up to 45 days.

Q4: What types of weapons does INS Sindhukesari carry?

Ans: Torpedoes, anti-ship missiles, and mines.

Vitamin B12

Vitamin B12

Vitamin B12 Latest News

Researchers report that a specially grown form of the blue-green algae can produce biologically active vitamin B12 at levels comparable to beef, a finding that could reshape how scientists think about sustainable nutrition.

About Vitamin B12

  • It is a water-soluble vitamin. 
  • It is also called cobalamin.
  • It is a vitamin the body uses to make and support healthy nerve cells. 
  • It’s also used to make healthy red blood cells and the genetic material inside cells called DNA. 
  • The human body cannot produce B12 on its own, so it must be obtained through foods high in vitamin B12 or supplements. 
  • It is naturally found in animal foods such as fish, meat, poultry, eggs, milk, and milk products. 
  • It is not present in plant foods unless fortified.
  • The body stores vitamin B12 in the liver. 
  • The body can store vitamin B12 for 2 to 5 years, and it can get rid of any excess or unwanted vitamin B12 in the urine.
  • Vitamin B12 Deficiency: Deficiency is most common in people who:
    • Are over the age of 50
    • Follow a vegetarian or vegan diet
    • Have had stomach or intestinal surgery, such as weight loss surgery
    • Have digestive system conditions such as celiac disease or Crohn’s disease
    • Have pernicious anemia, an autoimmune condition that occurs when your body destroys cells in your stomach that make an intrinsic factor, which is needed to help your body absorb B12 efficiently.
  • Low levels of B12 can cause:
    • Anemia
    • Loss of balance
    • Numbness or tingling in the arms and legs
    • Weakness
    • Dementia due to metabolic causes

Source: STD

Vitamin B12 FAQs

Q1: What type of vitamin is Vitamin B12?

Ans: It is a water-soluble vitamin.

Q2: What is another name for Vitamin B12?

Ans: Cobalamin.

Q3: What is the primary function of Vitamin B12 in the body?

Ans: It helps in making and supporting healthy nerve cells.

Q4: In which types of foods is Vitamin B12 naturally found?

Ans: Animal foods such as fish, meat, poultry, eggs, milk, and milk products.

Q5: Where is Vitamin B12 stored in the body?

Ans: In the liver.

Project Deepak

Project Deepak

Project Deepak Latest News

Recently, the Project Deepak of Border Roads Organisation (BRO) celebrated its 66th Raising Day at Shimla, Himachal Pradesh. 

About Project Deepak

  • It was initiated in 1962 by the Border Roads Organisation.
  • The project has been instrumental in executing critical infrastructure works in some of the most challenging terrains of the country.
  • Its area of responsibility spans key districts of Himachal Pradesh including Shimla, Kinnaur, Kullu and Lahaul-Spiti.
  • Achievements
    • Project Deepak- one of the oldest projects- has also been at the forefront of developing critical infrastructure such as Hindustan-Tibet Road and key stretches of Manali-Leh axis.
    • In addition to infrastructure development, this project has demonstrated exceptional commitment towards disaster management and humanitarian assistance.

Key Facts about Border Roads Organisation

  • It is a road construction executive force in India that provides support to the Indian Armed Forces.
  • BRO was entirely brought under the Ministry of Defence in 2015.
  • Establishment: It was formed on 7 May 1960 to secure India’s borders and develop infrastructure in remote areas of the north and northeastern states of the country.
  • It develops and maintains road networks in India’s border areas and friendly neighboring countries.
  • Motto: Shramena Sarvam Sadhyam (everything is achievable through hard work).

Source: PIB

Project Deepak FAQs

Q1: Project Deepak is an initiative of which organization?

Ans: Border Roads Organisation

Q2: What is the main mandate of Project Deepak?

Ans: Road connectivity in Himachal & border areas

Narmada River

Narmada River

Narmada River Latest News

At least nine people were killed recently after a cruise boat carrying around 30 people on board sank in Narmada River's Bargi dam area of Madhya Pradesh, Jabalpur.

About Narmada River

  • It is the largest west-flowing river in peninsular India.
  • Of the major rivers of peninsular India, only the Narmada, the Tapti, and the Mahirun from east to west.
  • It has long been an important route between the Arabian Sea and the Ganges (Ganga) River valley. 
  • The Narmada was called Namade by the 2nd-century-ce Greek geographer Ptolemy.
  • Course:
    • The origin of the river is a tiny reservoir named Narmada Kund, which is situated on the Amarkantak Hill in East Madhya Pradesh at an elevation of 1,057 m on the border with Chhattisgarh.
    • The river flows through Madhya Pradesh, Maharashtra, and Gujarat between Vindhya and Satpura hill ranges before falling into the Gulf of Cambay in the Arabian Sea about 10 km north of Bharuch, Gujarat.
  • Length: The total length of the river is 1312 kilometres (815 miles). It is the fifth longest river of India.
  • Narmada flows through the Hoshangabad plains, the Dhar upland, the Mahishmati plains, and the gorges at Mandhata and Murakta.
  • The basin is bounded on the north by the Vindhyas, on the east by the Maikala range, on the south by the Satpuras, and on the west by the Arabian Sea.
  • The Tropic of Cancer crosses the Narmada basin in the upper plains area, and a major part of the basin lies just below this line.
  • It is one of the rivers that flow in a rift valley and acts as a divider between north India and south India.
  • These rift valleys are the result of the faulting that took place when the northern flank of the Peninsula suffered subsidence.
  • The river has numerous waterfalls, notably the Dhuandhar Falls, southwest of Jabalpur, Madhya Pradesh. 
  • Tributaries:
    • The main tributaries of Narmada River are, namely, Hallon River, Banjar River, Barna River, and Tawa River.
    • The Tawa River is the longest tributary of the Narmada River.
  • There are also numerous pilgrimage spots on the banks of the river, the most important among them are Mahewswar and Omkareshwar temples.
  • There are several dams along the course of the river, including major hydroelectric projects, such as the Sardar Sarovar Dam, the Indira Sagar Dam, the Omkareshwar Dam, the Bargi Dam, and the Maheshwar Dam.

Source: RW

Narmada River FAQs

Q1: Which is the largest west-flowing river in peninsular India?

Ans: Narmada River.

Q2: Where does the Narmada River originate?

Ans: From Narmada Kund at Amarkantak Hill.

Q3: Which states does the Narmada River flow through?

Ans: Madhya Pradesh, Maharashtra, and Gujarat.

Q4: What is the total length of the Narmada River?

Ans: 1,312 kilometres.

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