Correct Answer is: Only II, III and IV

Statement- Artificial intelligence poses a greater threat to humanity than climate change.

I. AI technology is bases of all development in human history.

This does not explain a threat; it actually sounds positive.

II. AI technology could lead to the development of autonomous weapons, creating a risk of accidental or malicious use.

Yes, this clearly shows a major threat.

III. The potential for AI to surpass human intelligence raises ethical concerns about its control and decision-making power years.

Yes, loss of human control over AI is a serious threat.

IV. Advances in AI could exacerbate existing social inequalities, leaving many people job less and without income.

​Yes, this is another negative impact on humanity.

Only II, III and IV are possible reasons.

Thus, correct option is (c).

The correct answer is (b) Neeraj Chopra.

• Neeraj Chopra, the Olympic gold-winning javelin thrower, was conferred the honorary rank of Lieutenant Colonel in the Territorial Army.

• The Ministry of Defence’s Department of Military Affairs announced this on May 13, 2025, with the rank effective from April 16, 2025.

• Chopra is celebrated for his athletic achievements including Olympic Gold at Tokyo 2020, Silver at Paris 2024, and World Championship gold in 2023.

• He previously held the post of Subedar Major in the Indian Army.

• The honorary rank is granted under Para-31 of the Territorial Army Regulations, 1948, recognizing exceptional civilian contributions to national pride.

• The Territorial Army is a part-time volunteer force established in 1949 that supports the regular army in war, disaster relief, and nation-building.

• M.S. Dhoni, former Indian cricketer, is another notable sports personality awarded this honorary rank in 2011.

• This honor symbolizes the close synergy between India’s military and civilian achievements and acts as motivation for youth.

Information Booster:

1. Neeraj Chopra hails from Khandra village in Panipat, Haryana.

2. He became the first Indian athlete to win Olympic Gold in athletics (Javelin throw) in Tokyo 2020 (held in 2021).

3. The Territorial Army allows civilians to serve part-time alongside the Indian Army, supporting multiple national functions.

4. The honorary rank confers limited ceremonial military privileges and is symbolic of respect for outstanding individuals.

5. Neeraj Chopra’s journey from a village athlete to international champion inspires aspiring sportspersons across India.

6. The Territorial Army celebrated its 75th anniversary in 2024, highlighting its vital role in national defense.

7. Civil-military relations in India are strengthened by such honors recognizing civilian excellence.

The correct answer is (a) A stretched spring.

· Elastic potential energy is the energy stored in an object when it is deformed. When a spring is stretched, the atoms in the spring are pulled apart. This requires work to be done, and the work is stored as elastic potential energy. When the spring is released, the atoms snap back together and the elastic potential energy is converted into kinetic energy.

· The other options are not examples of elastic potential energy. A moving pendulum has kinetic energy, a spinning top has rotational kinetic energy, and a vibrating guitar string has vibrational kinetic energy.

Here is a more detailed explanation of each option:

· A stretched spring: When a spring is stretched, the atoms in the spring are pulled apart. This requires work to be done, and the work is stored as elastic potential energy. When the spring is released, the atoms snap back together and the elastic potential energy is converted into kinetic energy.

· A moving pendulum: A pendulum is a weight suspended from a pivot point. When a pendulum is released, it swings back and forth. The pendulum has kinetic energy when it is moving, but it does not have elastic potential energy.

· A spinning top: A spinning top is a toy that spins on its axis. The top has rotational kinetic energy, but it does not have elastic potential energy.

· A vibrating guitar string: A guitar string vibrates when it is plucked. The string has vibrational kinetic energy, but it does not have elastic potential energy.

The correct answer is (c) Mehidy Hasan Miraz.

• Mehidy Hasan Miraz, Bangladesh’s premier all-rounder, was awarded the ICC Men’s Player of the Month for April 2025.

• This was his first time receiving this prestigious recognition.

• The award recognized his outstanding all-round performance in a two-match Test series against Zimbabwe.

• He scored 116 runs with a batting average of 38.66 and took 15 wickets at a bowling average of 11.86.

• He was chosen over other nominees Blessing Muzarabani (Zimbabwe) and Ben Sears (New Zealand).

• Miraz became only the third Bangladeshi cricketer to win this award after Mushfiqur Rahim and Shakib Al Hasan.

• His achievement highlights Bangladesh’s growing prominence in international cricket and the importance of all-rounders in Test cricket.

Information Booster:

1. Mehidy Hasan Miraz is a 27-year-old all-rounder from Bangladesh known for his spin bowling and useful batting.

2. The ICC Men’s Player of the Month award is given monthly by the International Cricket Council to the best-performing male cricketer worldwide.

3. Miraz’s performance included a century and a five-wicket haul in the same Test, a rare feat for all-rounders.

4. Mushfiqur Rahim and Shakib Al Hasan, other Bangladeshi winners, are among the country’s cricket legends.

5. Bangladesh cricket has improved significantly in the last decade, producing world-class players.

6. All-rounders like Miraz play a vital role in balancing the team in Test matches.

7. The ICC award also recognizes consistency and impact in international cricket performances.

Given:

Devvrat sold a commodity at a loss of 3%.

If he had sold it at a profit of 15%, he would have received ₹1,494 more.

We need to find the cost price of the commodity.

​Solution:​

Let the cost price be ₹x.

Selling price at 3% loss = x - 3% of x = 0.97x

Selling price at 15% profit = x + 15% of x = 1.15x

Difference in selling prices = 1.15x - 0.97x = ₹1494

Difference = 1.15x - 0.97x = 0.18x

0.18x = 1494

x = 1494 / 0.18

x = ₹8300

Therefore, the cost price of the commodity is ₹8300.

Given:

The sum of all interior angles of a polygon = 2700°

Formula used:

Given:

NIGHTMARE

Logic:

So, 2 pairs in NIGHTMARE.

Thus, the correct answer is (b).

The mirror image of the given letter/ number as shown below.

Thus, the correct option is (a).

The correct answer is: D. Vitamin K

Explanation: Vitamin K is a fat-soluble vitamin essential for blood clotting.It exists in two primary forms:

• Vitamin K1 (Phylloquinone): Predominantly found in green leafy vegetables like kale, spinach, and broccoli.

• Vitamin K2 (Menaquinone): Found in fermented foods and animal products.

The "K" in vitamin K comes from the Danish word koagulation, meaning coagulation, highlighting its role in blood clotting.

Information Booster:

• Deficiency Disease: A deficiency in vitamin K can lead to Vitamin K Deficiency Bleeding (VKDB), characterized by excessive bleeding due to impaired blood clotting.

• Role in Blood Clotting: Vitamin K is crucial for synthesizing clotting factors such as prothrombin (Factor II), Factor VII, Factor IX, and Factor X.

• Absorption: Vitamin K is absorbed in the small intestine and requires bile for proper absorption.

• Storage: The body stores vitamin K in the liver and fat tissues.

• Daily Requirements:

  • Adult Women: 90 micrograms

  • Adult Men: 120 micrograms

• Food Sources:

  • Vitamin K1: Green leafy vegetables (e.g., kale, spinach), broccoli, Brussels sprouts, cabbage.

  • Vitamin K2: Fermented foods (e.g., natto), animal products (e.g., meat, eggs), dairy products.

Additional Information:

• Vitamin A: The scientific name for Vitamin A is retinol. It is essential for vision, immune function, and skin health. A deficiency can lead to night blindness and a weakened immune system.

• Vitamin B12: The scientific name for Vitamin B12 is cobalamin. It is important for nerve function, red blood cell production, and DNA synthesis. Deficiency can lead to pernicious anemia.

• Vitamin C: The scientific name for Vitamin C is ascorbic acid. It is essential for collagen synthesis, wound healing, and the immune system. Its deficiency leads to scurvy, which causes fatigue, bleeding gums, and bruising.

The correct answer is: (d) Fe(s)

Explanation:

In this reaction, iron (Fe) reacts with oxygen (O₂) to form iron(III) oxide (Fe₂O₃). Let's break down the oxidation and reduction processes:

• Oxidation refers to the loss of electrons.

• Reduction refers to the gain of electrons.

In the reaction, iron (Fe) is going from its elemental state (oxidation state = 0) to iron(III) oxide (oxidation state = +3). This means that iron is losing electrons and is therefore being oxidised.

On the other hand, oxygen (O₂) is going from an oxidation state of 0 to -2 in Fe₂O₃, meaning oxygen is gaining electrons and is being reduced.

Thus, iron (Fe) is the substance that is being oxidised.

Information Booster:

• Oxidation is the process of losing electrons, whereas reduction is the process of gaining electrons.

• In redox reactions, one substance is oxidised, and another is reduced.

• The substance that loses electrons (oxidised) has its oxidation state increased.

• The substance that gains electrons (reduced) has its oxidation state decreased.

• In this reaction, iron (Fe) is oxidised to form iron(III) oxide (Fe₂O₃).