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Given:

Number to find the cube root of 148877

Concept:

The cube root of a number can be found by raising that number to the 1/3 power. It's the value that, when cubed (multiplied by itself three times), gives the original number.

Solution:

To find the cube root of a number, you raise that number to the 1/3 power.

⇒ Cube root of 148877 = 148877^(1/3)

Performing the calculation gives:

⇒ Cube root of 148877 ≈ 53

Therefore, the cube root of 148877 is approximately 53.

The correct answer is Russia.

Key Points

• Russia is the largest country in the world by geographical area.
• Russia covers about 17.1 million square kilometers, making it the country with the largest land area on Earth.
• This large geographical area spans Eastern Europe and northern Asia.
• Russia has a varied topography with plains, steppes, taigas, mountains, and many more features.
• It spans 11 time zones due to its vast longitudinal range.
• Russia is home to the largest forest reserves in the world, owing to its extensive taiga forests.

Additional Information

• Vatican City: This is in fact the smallest independent state in the world, covering just 44 hectares (110 acres).
• China: While China is the 3^rd largest country by area, it's significantly smaller than Russia, covering about 9.6 million square kilometers.
• Australia: Australia is the 6^th largest country by surface area, its territory spans approximately 7.7 million square kilometers.

The correct answer is Warren Hastings.

Key Points

• 'Panchshala Bandobast', also known as the 'Five Schools Settlement' was introduced by British Governor Lord Hastings during his tenure as Governor-General of Bengal from 1774 to 1785.
• The "Panchshala Bandobast" was a significant part of Hastings's administrative and revenue reforms. His primary objective was to stabilize the land revenue system, which had been chaotic and heavily biased against cultivators.
• His strategy involved an attempt to create a class of loyal and vested intermediaries (later known as Zamindars) between the state and the vast rural peasantry.
• This reform was named the "Panchshala (Five-Schools) Bandobast" as it divided land revenue collection into five parts or 'schools' that covered different aspects of the process.
• This setup came to be known as the Permanent Settlement or Zamindari system, which had far-reaching consequences, with both positive effects (administrative stability, encouragement of settled cultivation) and negative impacts (the creation of a middleman class, poor peasant conditions).

Additional InformationThe five parts were:

• Fixing the amount of land revenue that the state demanded from landholders and keeping it unchanging.
• Making the landholder or Zamindar the proprietor of the land as long as the landholder fulfilled the obligation of paying land revenue.
• Making land revenue demand the first charge on land. This meant that satisfying the land revenue demand held priority over all other claims on the income derived from land.
• The right to sell the land of a defaulting landholder for recovering arrears of land revenue.
• The creation of a network of civil and criminal courts, with the Zamindar lower down in the hierarchy of civil courts and given magisterial powers within their Zamindaris.

According to the English alphabet & its positional values:

The logic followed here is:

The 1^st two letters are increased by 3.

The middle letter/ vowel is coded as it is.

The last two letters are decreased by 2.

Similarly,

Hence the correct answer is Option 4: VKIDR

The correct answer is Marie Curie.

Key Points

• The radioactive element Radium was discovered by scientist Marie Curie, along with her husband Pierre Curie.
• Marie Curie, was a Polish-born physicist and chemist who conducted pioneering research on radioactivity – a term she herself coined.
• In fact, not only did she discover radium, but she also discovered another element, polonium, which she named after her native country, Poland.
• Her work with radium began as a continuation of the research conducted by Henri Becquerel, who first discovered radioactivity in uranium minerals. Intrigued by Becquerel's work, the Curies proceeded to investigate uranium's properties and then expanded their research to other potential elements that exhibited the same behavior.
• During their research, the Curies established that radioactivity wasn't due to interactions with other elements but was, instead, an atomic property.
• This was a groundbreaking revelation at the time and fundamentally changed the understanding of how atoms worked.
• From ore called pitchblende, which was known to contain uranium, they managed to extract trace amounts of a significantly more radioactive element, which they named radium.
• This discovery in 1898 confirmed their hypothesis that radioactivity was not unique to uranium.
• Marie Curie's work on radioactivity has earned her a host of prestigious accolades, including two Nobel Prizes: the Nobel Prize in Physics (which she shared with Pierre Curie and Henri Becquerel) in 1903, and the Nobel Prize in Chemistry in 1911.
• She was the first woman to win a Nobel Prize, and she remains the only person to win Nobel Prizes in two different fields of the natural sciences.
• Her contributions to science, particularly in the field of radioactivity, have made a significant impact on the world.

Additional Information

• Michael Faraday:
• ​A British scientist who made significant contributions to the study of electromagnetism and electrochemistry, Faraday is particularly known for his work in establishing the basis for the electromagnetic field concept in physics.
• He also discovered electromagnetic induction, diamagnetism, and electrolysis.
• Albert Einstein:
• Famously known for his theory of relativity and his mass-energy equivalence formula E = mc², Einstein's work had a significant impact on the development of the theory of quantum mechanics.
• Isaac Newton:
• Living in the 17^th and 18^th centuries, Isaac Newton was instrumental in developing the principles of modern physics, notably through his laws of motion and universal gravitation.

Given:

(-251 × 21 × -12) ÷ ? = 158.13

Concept:

This problem is an algebraic equation that requires manipulation to isolate '?'. This involves calculating the product of the numbers on the left side and dividing it by 158.13.

Solution:

First, calculate the product in the brackets on the left (-251 × 21 × -12):

⇒ -251 × 21 × -12 = 63,252

Now, use the equation to solve for '?'

⇒ 63,252 ÷ ? = 158.13 ⇒ ? = 63,252 ÷ 158.13

Calculate the value for '?' by dividing: ⇒? ≈ 400

Therefore, the value of '?' is approximately 400.

The correct answer is Option 2: Discuss with your colleagues and then take step jointly.

Key Points

• Checklist for attempting SRT questions:

1. Read the question and options carefully.
2. Look for options that are realistic, optimistic, and reflect officer-like qualities.
3. Do not skip any situation.
4. Relegate the negative sentences and choose the most logical option among the remaining. As time is an important factor, hence your thinking ability should be swift.
5. React quickly and be logical.

Additional Information

Officer qualities:

The correct answer is Operation Ganga​.

Key Points

• Operation Ganga
• It was an evacuation mission to bring back all the Indian nationals who were stranded in Ukraine during Russia- Ukraine war.
• There were around 20,000 Indians including students stuck in Ukraine.
• The Indian evacuation flights operated from neighbouring countries like Romania and Hungary.
• The government is facilitated the evacuation of stranded Indians from its borders crossing Romania, Hungary, Poland, and Slovakia.
• A dedicated Twitter handle ‘OpGanga Helpline’ to assist Indian evacuation from Ukraine was also announced.

Given data:

Length of the first train (L1) = 100 meters.

The speed of the first train (Speed1) = 50 km/hr.

Length of the second train (L2) = 120 meters.

The first train crosses the second train in (T) = 6 seconds.

Concept:

When two objects are moving in opposite directions, their relative speed is the sum of their individual speeds.

Solution:

First, we convert the speed of the first train from km/hr to m/s by multiplying by

(5/18): Speed1 = 50 × (5/18) m/s = 13.89 m/s.

When two trains move in opposite directions and they cross each other, the

distance covered is the sum of the lengths of the two trains. Therefore, the total

Distance (D) covered is 100 +120 = 220 meters.

The relative speed (Speed R) of two objects moving in opposite directions is the sum of their speeds. As the time to cover the total distance at the relative speed is given, we can express the relative speed as: Speed R = D / T = 220 / 6 = 36.67 m/s.

Hence, the speed of the second train (Speed2) in m/s is the difference between the relative speed and the speed of the first train: Speed2 = Speed R - Speed1 = 36.67 m/s - 13.89 m/s = 22.78 m/s.

We convert this speed back to km/hr by multiplying by (18/5): Speed 2 = 22.78 × (18/5) km/hr = 81.97 km/hr.

Therefore, the speed of the second train is approximately 82 km/hr.

The mirror image of the figure is given below:-

Hence the correct answer is Option 3