Q. Which of the following empires is credited with the establishment of the Silk Road, facilitating trade between the East and West?
A.Roman Empire
B.Mongol Empire
C.Han Dynasty
D.Ottoman Empire
Solution
The Han Dynasty (206 BCE – 220 CE) is credited with establishing the Silk Road, which became a crucial trade route connecting China with the Mediterranean, facilitating cultural and economic exchanges.
Q. Which of the following equations represents the condition for the first minimum in a single-slit diffraction pattern?
A.a sin(θ) = λ
B.a sin(θ) = 2λ
C.a sin(θ) = 3λ
D.a sin(θ) = 0
Solution
The condition for the first minimum in a single-slit diffraction pattern is given by a sin(θ) = λ, where 'a' is the slit width and 'λ' is the wavelength.
Q. Which of the following equations represents the relationship between shear stress and shear rate in a Newtonian fluid?
A.τ = μ(du/dy)
B.τ = ρg
C.F = ma
D.P = F/A
Solution
In a Newtonian fluid, shear stress (τ) is directly proportional to the shear rate (du/dy) with the proportionality constant being the dynamic viscosity (μ).
Q. Which of the following events directly led to the American Civil War?
A.The signing of the Declaration of Independence
B.The Dred Scott decision
C.The Louisiana Purchase
D.The Emancipation Proclamation
Solution
The Dred Scott decision in 1857 heightened tensions between the North and South over slavery, contributing directly to the outbreak of the American Civil War in 1861.
Q. Which of the following events in the 20th century significantly impacted India's relations with its neighboring countries? (1947)
A.Partition of India
B.Independence of India
C.Non-Aligned Movement
D.Green Revolution
Solution
The Partition of India in 1947 had a profound impact on India's relations with its neighboring countries, particularly Pakistan and Bangladesh, leading to long-standing conflicts and issues.
Q. Which of the following events is often cited as a consequence of climate change during the Medieval period?
A.The fall of the Roman Empire
B.The Black Death
C.The Crusades
D.The Renaissance
Solution
The Black Death (1347-1351) is often linked to climate change, as the cooler temperatures and crop failures may have contributed to the spread of the plague.
Q. Which of the following events marked a significant shift towards inclusive growth in India during the 1990s? (1991)
A.Green Revolution
B.Economic Liberalization
C.Panchayati Raj
D.Nationalization of Banks
Solution
Economic Liberalization in the 1990s aimed to integrate the Indian economy with the global market, promoting inclusive growth through increased opportunities.