The correct answer is:(D) 0

Explanation:

The freezing point of fresh water is 0°C. This is the temperature at which water changes from its liquid state to a solid (ice) under standard atmospheric pressure (1 atmosphere). At temperatures below 0°C, water freezes into ice, and at temperatures above 0°C, it remains in a liquid state.

Information Booster:

• The freezing point of water is 0°C, and it is the same as the melting point of ice under standard pressure.

• Water freezes at 0°C when it is at a pressure of 1 atmosphere (standard atmospheric pressure).

• At higher altitudes, where atmospheric pressure is lower, the freezing point of water can decrease slightly.

• The freezing point of water can also change when dissolved substances, such as salts, are added. This is known as freezing point depression.

• 0°C is also the standard reference point for the Celsius scale.

The correct answer is: (a) 900

Explanation:

1. Power = 1000 W = 1 kW

2. Time per day = 5 hours

3. Number of days in September = 30

4. Energy consumed = Power × Time × Days = 1 kW × 5 hrs × 30 = 150 kWh (units)

5. Cost per unit = ₹6

6. Total cost = 150 × 6 = ₹900

Information Booster:

• 1 kilowatt-hour (kWh) = 1 unit of electricity

• Monthly energy cost = Power (in kW) × Time (hrs) × Days × Rate per unit

• September has 30 days

• Higher wattage = more energy consumed = higher cost

• Energy-saving appliances help reduce electricity bills

• Electricity boards charge consumers per unit (kWh)

Correct Answer is: T is Q's husband

Given:

​​P is the brother of Q and R.

S is R's mother.

T is P's father.

From the given information family tree will be:

​Now check each option:

​Option A. S is P's mother

​S is R's mother and R, P, Q are siblings, it's very likely S is also P’s mother. Possible.​

Option B. T is Q's husband

​T being Q’s husband does not make sense if Q is a child. This CANNOT be definitely true.

Option C. T is Q's father

​P and Q are siblings, and T is P's father, it is logical that T is Q's father too. Possible.​

Option D. T is S's husband

​If T is P’s father and S is R’s mother, and they are parents of the siblings, then T and S are most likely husband and wife. Possible.

Thus, the correct option is: (b) T is Q's husband

Given:

Number = 4.567‾

Solution:

Let x = 4.5676767...

Multiply by 100: 100x = 456.7676767...

Subtract the equation x = 4.5676767... from 100x = 456.7676767...

=> 100x - x = 456.7676767 - 4.5676767

=> 99x = 452.2

The correct answer is option (c) Iceland.

Explanation

As per the Human Development Report 2025, which presents HDI rankings for the year 2023, Iceland secured the 1st position with an HDI value of 0.972, the highest among the 193 countries assessed. It was followed by Norway and Switzerland, both with an HDI of 0.970, sharing the 2nd position. The Human Development Index (HDI) is a composite metric developed by the United Nations Development Programme (UNDP) to assess countries' overall social and economic development based on health (life expectancy), education (mean and expected years of schooling), and standard of living (GNI per capita).
Iceland’s continued investment in public healthcare, education, and gender equality significantly contributes to its high HDI rank. Additionally, its low income inequality and strong welfare systems ensure a high quality of life for its citizens, reflecting in its top position on the HDI scale.

Information Booster

· Top HDI Rank (2023): Iceland – 0.972

· 2nd Rank (Shared): Norway & Switzerland – 0.970

· HDI Measures: Life expectancy, education level, and income

· Iceland's Strengths: Public welfare, gender equality, education

· Report Published By: United Nations Development Programme (UNDP)

Additional Knowledge

(a) Norway: Consistently ranks among the top nations on the HDI due to its strong economy, excellent healthcare, and education systems. In 2023, it shared the 2nd position with Switzerland, scoring 0.970.

(b) Switzerland: Known for its healthcare, education, and high standard of living, Switzerland also shared the 2nd spot in 2023. The country boasts strong institutions, economic competitiveness, and low corruption levels.

(c) Iceland: Correct Answer – Ranked 1st in 2023 with an HDI value of 0.972. It excels in social equality, access to services, and environmental sustainability, making it a model nation in human development.

(d) Ireland: While Ireland is among the top 10 HDI nations in most recent rankings, it did not feature in the top 3 in the 2023 HDI list. It remains a high-income country with strong health and education indicators.

Given: (Left) B Z C T B Z T E S B C Z T W A Z T F Z T U K R B Z T V (Right)

Logic: (Not) B | Z | T

Three Z are there in the series which are immediately followed by T but not immediately preceded by B.

Thus, correct option is (d).

The correct answer is option (c) Operation Bunyan al-Marsus.

Explanation:

On May 10, 2025, Pakistan initiated Operation Bunyan al-Marsus as a retaliatory measure following India's missile strikes on Pakistani airbases, including Nur Khan in Rawalpindi. This operation targeted key Indian military installations such as the Pathankot airfield and BrahMos missile storage sites.

The term "Bunyan al-Marsus" is derived from the Quran, meaning "Solid Structure" or "Unbreakable Wall," symbolizing unity and strength.

This operation marks a significant escalation in the ongoing conflict between the two nuclear-armed nations, with both sides reporting military and civilian casualties.

Correct Answer is: × and ÷

Given:

36 + 6 ÷ 3 - 20 × 5 = 50

Check each options:

Option A: Interchanged + and -

36 − 6 ÷ 3 + 20 × 5 = 50

= 36 - 2 + 20 × 5 = 50

= 36 - 2 + 100 = 50

= 136 - 2 = 50

= 134 = 50

Option B: Interchanged - and ÷

36 + 6 − 3 ÷ 20 × 5 = 50

= 36 + 6 − 0.15 × 5 = 50

= 36 + 6 − 0.75 = 50

= 42 -0.75 = 50

= 41.25 =​ 50

​Option C: Interchanged × and ÷

36 + 6 × 3 − 20 ÷ 5 = 50

= 36 + 18 − 4 = 50

= 54 - 4 = 50

= 50 = 50 (Follow)

Option D: Interchanged + and ×

36 × 6 ÷ 3 − 20 + 5 = 50

= 36 × 2 - 20 + 5 = 50

= 72 + 5 - 20 = 50

= 77 - 20 = 50

= 57 = 50

Thus, the correct option is: (c)

The correct answer is:(c) Hindbrain

Explanation:

• Vomiting is an involuntary reflex action controlled by the vomiting center located in the medulla oblongata, which is part of the hindbrain. This area coordinates signals from the digestive system and initiates the vomiting reflex.

Information Booster:

• Medulla oblongata regulates involuntary actions like breathing, heart rate, and vomiting.

• The hindbrain includes pons, cerebellum, and medulla oblongata.

• The vomiting center is sensitive to toxins and drugs in the blood.

• Vomiting can also be triggered by vestibular system signals (motion sickness).

• The reflex is protective, expelling harmful substances from the stomach.

• It involves muscle contraction, abdominal pressure, and esophageal relaxation.

Additional Information:

• Forebrain: Controls voluntary actions, intelligence, memory, and decision-making.

• Midbrain: Relays visual and auditory signals, not linked with vomiting reflex.

• Spinal cord: Manages reflexes like withdrawal but not complex reflexes like vomiting.

The correct answer is: (b) Genetics

Explanation:

• Genetics is the branch of biology that studies inheritance and variations of traits from one generation to another.

• It involves the study of genes, DNA, chromosomes, and heredity.

• The father of genetics is Gregor Mendel, who discovered the fundamental laws of inheritance through pea plant experiments.

• Genetics helps explain how traits are passed, how mutations occur, and how genetic disorders are inherited.

Information Booster:

• Genetics includes Mendelian and Non-Mendelian inheritance.

• It is crucial in fields like medicine, agriculture, forensic science, and evolutionary studies.

• DNA (Deoxyribonucleic Acid) is the molecular basis of heredity.

• The study of genetic engineering is a part of modern genetics and biotechnology.

• Genetic principles are applied in gene therapy, cloning, and genome editing (CRISPR).

• Human Genome Project was a landmark achievement in genetic research.

Additional Information:

• Evolution biology – Studies origin and change in species over time; deals with natural selection and adaptation.

• Biotechnology – Applies biological processes for industrial and medical purposes; uses genetics but is not focused solely on inheritance.

• Anthropology – Studies human societies, cultures, and evolution, not specifically inheritance.