General
Attock fort built by which emperor?
A) Babur
B) Akbar
C) Sher Shah Suri
D) Aurangzeb
Attock Fort was built by the Mughal Emperor Akbar in 1581. It is located near the Indus River in present-day Pakistan and was constructed for strategic military purposes. The fort played a crucial role in defending the northwestern frontier of the Mughal Empire against invasions from Central Asia.
Akbar was known for strengthening the empire through administrative reforms and military infrastructure. Attock Fort was part of his broader strategy to secure trade routes and maintain control over key regions.
Babur founded the Mughal Empire but did not build this fort. Sher Shah Suri was known for road construction, including the Grand Trunk Road, while Aurangzeb ruled later and did not construct Attock Fort.
Thus, Akbar is the correct answer. The fort remains an important historical and architectural landmark in Pakistan today.
General
A)
Quantum theory
B)
Gravitational theory
C)
Theory of relativity
D)
Quality theory
Max Planck, a German physicist, is known as the father of quantum theory. In 1900, he proposed that energy is emitted in discrete packets called quanta, rather than continuously. This idea explained blackbody radiation, which classical physics could not.
Quantum theory revolutionized physics and led to the development of quantum mechanics. It explains the behavior of particles at atomic and subatomic levels and forms the basis of modern technologies like semiconductors and lasers.
Gravitational theory is associated with Isaac Newton, while the theory of relativity was developed by Albert Einstein. “Quality theory” is not a scientific concept.
Thus, the correct answer is quantum theory. Planck’s work marked the beginning of modern physics.
General
A)
Carbon monoxide
B)
Sulphur dioxide
C)
Methane
D)
Carbon dioxide
Sulphur dioxide causes corrosion by forming sulphuric acid in presence of moisture, damaging iron and steel structures over time. It accelerates rusting and weakens metal integrity, especially in polluted industrial environments.
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General
A)
Stigma
B)
Anthers
C)
Ovary
D)
Petals
In flowering plants, after fertilization occurs, the ovary of the flower develops into the fruit. The ovary contains ovules, which, after fertilization, develop into seeds.
The fruit serves to protect the seeds and aid in their dispersal. Different types of fruits develop depending on the plant species and structure of the ovary.
The stigma is the receptive part of the pistil for pollen, anthers produce pollen, and petals attract pollinators. None of these develop into fruit.
Thus, the ovary is the correct answer. This concept is important in plant reproduction and agriculture.
Understanding fruit development helps explain how plants reproduce and spread in different environments.
General
A)
1796
B)
1976
C)
1980
D)
1767
Edward Jenner, an English physician, is credited with developing the first successful vaccine in 1796. He discovered that milkmaids who had contracted cowpox were immune to smallpox, a deadly disease at the time.
Jenner tested his theory by inoculating a young boy with material from cowpox lesions and later exposing him to smallpox. The boy did not develop the disease, proving immunity.
This discovery laid the foundation for immunology and modern vaccination. It led to the eventual eradication of smallpox worldwide.
Other options are incorrect as they do not match the historical timeline.
Thus, 1796 is the correct answer, marking a major breakthrough in medical science and public health.
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General
A)
Enzyme
B)
Pepsin
C)
Proteins
D)
Amylase
Pepsinogen is activated by stomach acid into pepsin, which digests proteins into peptides.
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