RRB NTPC Previous Year Paper (Allahabad) - 2013 - Railways MCQ

Adoption of "Jana Gana Mana" as the National Anthem

• Year: 1950


• Explanation: The Indian National Anthem, "Jana Gana Mana", was adopted as the National Anthem of India on January 24, 1950. This was the same day the Indian Constitution came into effect, marking the birth of the Republic of India. The song was originally composed by Rabindranath Tagore in Bengali and was first sung during the Indian National Congress session in 1911.


• Significance: The adoption of "Jana Gana Mana" as the National Anthem symbolizes the unity and diversity of India and reflects the country's rich cultural heritage. It is sung on various occasions, including national festivals, important ceremonies, and school gatherings, to instill a sense of patriotism and pride among the citizens.

• Definition: Thigmotropism is the directional growth movement of a plant part in response to the touch of an object.


• Mechanism: When a plant part comes into contact with an object, it triggers a response in the plant cells, causing them to grow in a specific direction.


• Examples: Some plants exhibit thigmotropism in response to physical stimuli such as wind or touch. For example, tendrils of climbing plants like peas and grapes show thigmotropism as they wrap around a support structure for better stability.


• Importance: Thigmotropism helps plants adapt to their environment by allowing them to respond to physical stimuli and optimize their growth and development accordingly.


• Comparison: Thigmotropism is different from other tropisms such as geotropism (response to gravity), chemotropism (response to chemicals), and phototropism (response to light).

• Potential difference (V) = 4.6 V


• Current (I) = 0.25 A

• Resistance (R) = V / I

• Substitute the given values into the formula: R = 4.6 V / 0.25 A = 18.4 Ω

• The resistance of the bulb is 18.4 Ω

• When an electric current flows through a resistor, the voltage across the resistor is directly proportional to the current passing through it.


• Ohm's Law states that resistance is equal to the voltage across the resistor divided by the current flowing through it.


• In this case, the potential difference across the bulb is 4.6 V and the current flowing through it is 0.25 A.


• By applying Ohm's Law, we can calculate the resistance of the bulb which comes out to be 18.4 Ω.

• Angle of incidence: The angle at which the light ray hits the mirror is 60° from the normal.


• Angle of reflection: According to the law of reflection, the angle of reflection is equal to the angle of incidence. So, the angle of reflection is also 60°.


• Angle between reflected ray and mirror surface: The angle between the reflected ray and the surface of the mirror can be calculated by subtracting the angle of reflection from 90° (since the angle between a ray and a surface is always measured from the normal).


• 90° - 60° = 30°

• Definition: Asexual reproduction is a mode of reproduction in which offspring arise from a single parent and inherit the genes of that parent only.


• Process: In asexual reproduction, there is no fusion of gametes from two parents. The offspring is genetically identical to the parent.


• Types: Asexual reproduction can occur through various methods such as binary fission, budding, fragmentation, and spore formation.


• Advantages: Asexual reproduction is efficient in terms of energy and time as it does not require finding a mate or undergoing complex mating rituals.


• Disadvantages: One of the main disadvantages of asexual reproduction is the lack of genetic diversity, which can make populations more susceptible to diseases and environmental changes.

• Given:




• Charge (Q) = 15.0 C


• Electrical energy converted into heat (W) = 1.5 J






• Formula:




• The electrical energy (W) converted into heat can be calculated using the formula:
  W = Q * V


• Where: W = Electrical energy converted into heat (in Joules)
  Q = Charge (in Coulombs)
  V = Potential difference (in Volts)






• Calculation:




• Given: W = 1.5 J, Q = 15.0 C


• Using the formula W = Q * V, we can calculate the potential difference V


• 1.5 J = 15.0 C * V


• V = 1.5 J / 15.0 C = 0.1 V






• Conclusion:




• The potential difference across the ends of the wire is 0.1 V

• Frequency of light: Frequency of light is a property that remains constant as it travels from one medium to another.


• Wavelength of light: When light enters a medium with a different refractive index, its speed changes, and therefore its wavelength changes. However, the frequency remains constant.


• Refractive index of glass: Glass has a refractive index of 1.50, which means light will slow down when it enters glass.


• Relation between speed, wavelength, and frequency: Speed of light = Wavelength x Frequency. Since the speed of light changes in glass, the wavelength changes accordingly to maintain the constant frequency.


• Conclusion: The frequency of light remains the same when it enters a different medium such as glass, only the speed and wavelength change.

• Mammalia: Humans belong to the class Mammalia in the animal kingdom. This class is characterized by the presence of mammary glands for nursing their young, hair or fur covering the body, and three middle ear bones.


• Evolutionary history: Humans have evolved from mammalian ancestors over millions of years. Our ancestors were also mammals, and we share common characteristics with other mammals such as giving birth to live young and possessing a neocortex in the brain.


• Shared traits: Humans share many traits with other mammals, including warm-bloodedness, a four-chambered heart, and the ability to regulate body temperature internally.


• Human classification: By studying evolutionary principles, scientists have classified humans under the class Mammalia due to our shared characteristics with other mammals.

• Scientist: Oersted


• Experiment: Oersted discovered the relationship between electricity and magnetism through his experiment where he passed an electric current through a wire.


• Observation: He noticed that a magnetic field was created around the wire, causing a compass needle placed nearby to deflect.


• Significance: This discovery laid the foundation for the study of electromagnetism and the development of technologies such as electromagnets and electric motors.

• Calculate the angle of refraction using Snell's Law: n1*sin(theta1) = n2*sin(theta2)


• Since the prism is equilateral, the angle of refraction is also 45° (60° - 45° = 15°)


• Therefore, the angle of refraction as the beam emerges from the prism is 45°

• Explanation:

When a current carrying conductor is placed above a magnetic needle, a magnetic field is generated around the conductor. This magnetic field interacts with the magnetic field of the needle, causing the needle to deflect.

• Maximum Deflection:

The maximum deflection that can be produced when a current carrying conductor is placed above a magnetic needle is 90°. This is because the magnetic field generated by the current carrying conductor interacts with the magnetic field of the needle at an angle of 90°, causing the needle to deflect to its maximum extent.

• Factors Affecting Deflection:

The amount of deflection can be influenced by factors such as the strength of the current flowing through the conductor, the distance between the conductor and the needle, and the orientation of the conductor relative to the needle.

• Conclusion:

Therefore, the maximum deflection that can be produced when a current carrying conductor is placed above a magnetic needle is 90°.

• Appointed Individual: Habib Khan Gorang


• Date of Appointment: 1st September 2012

• Background: Provide information about his previous roles, experience, and qualifications


• Responsibilities as Chairman: Outline the duties and responsibilities he will undertake in his new role

• Impact on RPSC: Discuss how this appointment will influence the functioning and decisions of the Rajasthan Public Service Commission


• Expectations: Mention the expectations from Habib Khan Gorang as the new Chairman of RPSC

• Population Growth Rate: The population growth rate in Rajasthan according to the 2011 census is 21%.


• Calculation: The population growth rate is calculated by taking into account the difference between the birth rate and the death rate, along with migration patterns.


• Reasons for High Population Growth Rate: Factors contributing to the high population growth rate in Rajasthan include high fertility rates, lack of awareness about family planning methods, and cultural norms that encourage large families.


• Impact: The high population growth rate can put pressure on resources, infrastructure, and the environment, leading to challenges in providing services such as healthcare, education, and employment opportunities.


• Government Initiatives: The government of Rajasthan has been implementing various initiatives to address population growth, including promoting family planning methods, improving healthcare services, and creating awareness about the benefits of smaller families.

• Mand: Kesariya Balam is sung in the Mand singing style. Mand is a traditional folk singing style that is popular in the regions of Rajasthan, Gujarat, and parts of Uttar Pradesh. It is known for its soulful and melodious tunes that often convey emotions of love, longing, and celebration.


• Peelu: Peelu is another traditional singing style that is popular in Rajasthan and is characterized by its high-pitched and energetic vocals.


• Sarang: Sarang is a classical singing style that is commonly associated with Indian classical music, particularly in the Hindustani tradition.


• Mode: Mode is a term used in Western music theory to refer to a type of scale or system of pitches used in composition and performance.

• Rajasthan Day: Rajasthan Day is celebrated on 30th March every year.


• Significance: This day marks the formation of the state of Rajasthan in 1949.


• Celebrations: On this day, various cultural events, parades, and programs are organized to showcase the rich heritage and traditions of Rajasthan.


• Symbols: The state emblem of Rajasthan includes the Ashoka Stambh and a royal Bengal tiger. These symbols represent courage, strength, and the rich history of the state.


• Historical Importance: Rajasthan has a glorious past with a rich history of kings, warriors, and vibrant culture. Rajasthan Day is a reminder of this heritage.

• Total area of Rajasthan: According to the data, the total area of Rajasthan is approximately 342,239 square kilometers.


• Total area of India: The total area of India is around 3,287,263 square kilometers.


• Calculation of percentage: To find the percentage of area that Rajasthan covers in India, we will divide the area of Rajasthan by the total area of India and then multiply by 100.


• Percentage calculation: (342,239 / 3,287,263) x 100 ≈ 10.4%

• Therefore, the area of Rajasthan covers approximately 10.4% of the total area of India.

Taragarh Fort is a fortress built upon a steep hillside in the city of Ajmer in the Indian state of Rajasthan. It was constructed in the 8th century by Ajayaraja Chauhan (721-734) [ 1] and it was originally called Ajaymeru Durg.