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The correct answer Neuron.

 Key Points

1. The basic unit of the nervous system is a nerve cell or neuron. The human brain contains about 100 billion neurons.
2. Neurons, or nerve cells, are the main structural and functional units of the nervous system.
3. Every neuron consists of a body (soma) and a number of processes (neurites).
4. The nervous system determines that it is a highly complex part of an animal that coordinates its actions and sensory information by transmitting signals to and from different parts of its body.

Important Points

1. The nervous system is the major controlling, regulatory, and communicating system in the body.
2. It is the center of all mental activity including thought, learning, and memory.

• Together with the endocrine system, the nervous system is responsible for regulating and maintaining homeostasis
• A neuron is the structural and functional unit of the brain.
• The longest cell in the human body is the neuron.
• The nervous system consists of the brain, spinal cord, sensory organs, and all of the nerves that connect these organs with the rest of the body.
• Together, these organs are responsible for the control of the body and communication among its parts.

Additional Information

1. Neurons are the basic functional units of the nervous system, and they generate electrical signals called action potentials, which allow them to quickly transmit information over long distances.
2. To generate and transmit nerve impulses, support the neurons; may serve a nutritive function and help regulate the chemical environment of the neuron.
3. The nervous system produces a response on the basis of the stimuli perceived by sensory structures.

The correct answer is  Vinoba Bhave.

Key Points 

• Vinoba Bhave:
• ​He was the first Indian who won the Ramon Magsaysay Award.
• Human rights activist Vinoba Bhave was among the first five individuals to receive the Ramon Magsaysay Award in its year of inception in 1958.

Additional Information 

• The Ramon Magsaysay Award:
• It was established in 1957 and is considered Asia's premier prize and highest honour.
• It is named after Ramon Magsaysay, the third president of the Republic of the Philippines.
• Recognises and honours individuals and organizations in Asia, regardless of race, creed, gender, or nationality, who have achieved distinction and have helped others generously without aiming for public recognition.
• Till 2009, awards were traditionally given in five categories:
• Government service; public service; community leadership; journalism, literature, and creative communication arts; and peace and international understanding.
• Indian winners on the list:
• Prominent Indians who have won the award include Vinoba Bhave in 1958,
• Mother Teresa in 1962,
• Kamaladevi Chattopadhyay in 1966,
• Satyajit Ray in 1967,
• Mahasweta Devi in 1997.
• Arvind Kejriwal (2006)
• Anshu Gupta of Goonj (2015)
• human rights activist Bezwada Wilson (2016),
• journalist Ravish Kumar (2019) has won the award.

Given:

The number is divivible by 2, 5 and 10

Concept used:

Number must be divisible by LCM of the numbers

Calculation:

Lcm of 2,5 and 10

⇒ LCM = 10

Number must have a zero at the end to be divisble by 10

So, Option 4 is divisible by 2,5 and 10

∴ 19400 is divisible by 2, 5 and 10.

Shortcut Trick Number which is divided by 10 should have 0 at its unit digit. And out of all the question we have one such option available.

'अथ' शब्‍द का विपरीतार्थक शब्‍द इति है। अन्‍य व‍िकल्‍प असंगत हैं। 

Key Points

• अथ का अर्थ-  आरम्भ तथा मंगलसूचक शब्द।
• इति का अर्थ- समाप्तिसूचक।
• अत: अथ का व‍िलोम इति होगा।

अन्‍य व‍िकल्‍प- 

Important Points कुछ अन्‍य व‍िलोम शब्‍द- 

Additional Information 

The correct answer is Kanha Tiger Reserve.

Key Points

• Kanha Tiger Reserve, located in Madhya Pradesh, is one of the most renowned tiger reserves in India. It is particularly famous for its conservation initiatives and biodiversity.
• The "Ghost Tree" conservation festival, held in February 2026, aimed to raise awareness about the significance of the Kullu Tree (commonly referred to as the "Ghost Tree"), which is a unique species found in this region.
• The Kullu Tree is known for its striking white bark, which stands out prominently in the forest landscape, especially under moonlight, giving it the name "Ghost Tree."
• The festival included activities such as environmental education sessions, tree plantation drives, and discussions about biodiversity conservation.
• This initiative highlights the importance of sustainable environmental practices and the role of tiger reserves like Kanha in preserving endangered flora and fauna.

Additional Information

• Kanha Tiger Reserve:
• It is located in the Mandla and Balaghat districts of Madhya Pradesh.
• It was declared a national park in 1955 and later became part of the Project Tiger initiative in 1973.
• The reserve is known for its significant population of Royal Bengal Tigers, leopards, sloth bears, and Indian wild dogs.
• Barasingha (Swamp deer) is famously referred to as the "Jewel of Kanha" due to successful conservation efforts.
• The reserve spans an area of approximately 940 square kilometers, with a buffer zone of 1,067 square kilometers.
• Ghost Tree (Kullu Tree):
• Its scientific name is Steculia urens.
• The tree is found in dry, deciduous forests and is known for its white bark that peels off in layers.
• It is primarily used for producing gum and has medicinal applications in traditional practices.
• The tree plays a crucial role in the ecosystem by providing habitat and resources for insects and birds.
• Other Tiger Reserves in Madhya Pradesh:
• Pench Tiger Reserve: Famous for being the inspiration behind Rudyard Kipling's The Jungle Book.
• Panna Tiger Reserve: Known for its successful tiger reintroduction program after losing its tiger population.
• Bandhavgarh Tiger Reserve: Known for its high density of tigers and historical Bandhavgarh Fort.
• Satpura Tiger Reserve: Recognized for its unique landscape and diversity of flora and fauna.

Important Points

• Conservation Significance:
• Events like the "Ghost Tree" conservation festival help promote awareness about the importance of preserving unique tree species for ecological balance.
• Such festivals also involve local communities, fostering a sense of ownership and responsibility toward the environment.
• Project Tiger:
• Initiated in 1973 by the Government of India, Project Tiger aims to protect tigers and their habitats.
• Madhya Pradesh, often referred to as the "Tiger State of India", has the highest number of tigers in the country according to the latest tiger census.

The correct answer is - "C".

Key Points

• By reading the given points, we get a sense that Point A and Point B have some connection.
• Using public transport can be a solution of pollution.
• Point C does not make sense with any of the given points as it talk about financial management So it can be easily eliminated.
• Point D can be connect like personalizing comforts means own car, or vehicle makes pollution that resulted in to many problems and public transport is an alternative of the pollution.

 So the correct option is Option 3

The Correct Answer is Option 4, i.e. The electrical energy is converted into heat energy.

CONCEPT:

• Conservation of energy: The Law of conservation of energy states that the total energy of an isolated system remains conserved (constant), that is, it can neither be created nor be destroyed but it can be transformed from one form to another.
• One of the most common examples of the Law of Conservation of Energy is: water is stored at a height with some potential energy, when the water starts flowing downward then its potential energy is converted into kinetic energy.
• An electric Iron is a heat and pressure combination that eliminates wrinkles.
• The electric iron theory is that as the current passes through a coil, the coil gets red hot and transfers the heat by conduction to the electric iron base plate

EXPLANATION:

• In an electric iron, we provide an electric current that is converted into heat energy. So option 4 is correct.

Additional Information

Given:

The sum of the present ages of father and son is 60 years.

Five years ago, the age of the father was four times that of the son.

Calculation:

Let the present of the father and son be P and Q respectively.

According to the question,

P + Q = 60

⇒ P = 60 - Q      ....(1)

(P - 5) = 4 × (Q - 5)

⇒ 60 - Q - 5 = 4Q - 20 (From 1)

⇒ 5Q = 55 + 20

⇒ Q = 75/5

⇒ Q = 15

∴ The present age of the son is 15 years.

सही उत्तर तद्भव शब्द है। 

Key Points

• सच एक तद्भव शब्द है, इसका तत्सम शब्द सत्य होगा।
• तद्भव का शाब्दिक अर्थ है– उससे बने (तत् + भव = उससे उत्पन्न), अर्थात जो उससे (संस्कृत से) उत्पन्न हुए हैं।
• तत्सम शब्दों में समय और परिस्थितियों के कारण कुछ परिवर्तन होने से जो शब्द बने हैं उन्हें तद्भव कहते हैं।

Additional Information

तत्सम-तद्भव शब्दों से जुड़े कुछ तथ्य-

1. तत्सम शब्दों के पीछे ‘क्ष‘ वर्ण का प्रयोग होता है और तद्भव शब्दों के पीछे ‘ख‘ या ‘छ‘ शब्द का प्रयोग होता है। जैसे –अक्षर  = अक्छर,आखर, पक्षी = पंछी
2. तत्सम शब्दों में ‘र‘ की मात्रा का प्रयोग होता है। जैसे –अमृत = अमीर आम्र = आम
3. तत्सम शब्दों में ‘ऋ’ की मात्रा का उपयोग होता है। 

4.तत्सम शब्दों में ‘श्र’ का प्रयोग होता है और तद्भव शब्दों में ‘स‘ का प्रयोग हो जाता है। जैसे – धन्नश्रेष्ठी = धन्नासेठी

5.तत्सम शब्दों में ‘व‘ का प्रयोग होता है और तद्भव शब्दों में ‘ब’ का प्रयोग होता है। जैसे – वन = बन

6.तत्सम शब्दों में ‘ष’ वर्ण का प्रयोग होता है। जैसे – कृषक = किसान

7.तत्सम शब्दों में ‘श’ का प्रयोग होता है और तद्भव शब्दों में ‘स’ का प्रयोग हो जाता है। जैसे – दिपशलाका = दिया सलाई

Given:

By selling an article for Rs.770, a woman incurred a loss of 23%.

Formula used:

Selling Price = (100% + Profit%) × Cost Price

Selling Price = (100% - Loss%) × Cost Price

Calculation:

According to the question,

First case:

By selling an article for Rs.770, a woman incurred a loss of 23%.

⇒ 770 = (100% - 23%) of C.P

⇒ 770 = 77% of C.P

⇒ C.P = Rs. 1000

Second case:

Selling price S.P so that she makes a profit of 27%.

⇒ S.P = (100% + 27%) of 1000

⇒ S.P = (127%) of 1000

⇒ S.P = Rs. 1270

Therefore, "Rs. 1270" is the required answer.