Tag: social studies

Questions Related to social studies

Vasco da Gama a sailor belongs to _________.

social studies north america voyages and discoveries scientific inventions and technological developments india's contemporary economic condition

  1. Portuguese

  2. American

  3. German

  4. South American

Show answer
Correct Option: A
Explanation:

Vasco da Gama was a Portuguese explorer and the first European to reach India by sea. He was born in 1460 in the town of Sines in Portugal.

What vast system needs to be created for agriculture?

social studies north america voyages and discoveries scientific inventions and technological developments india's contemporary economic condition

  1. Factories to manufacture tools and equipment used for farming

  2. Banks to provide loans to the farmers

  3. A market for the goods produced

  4. All of above

Show answer
Correct Option: D
Explanation:

Agriculture is essential to fulfill the need for food. Therefore, a vast system needs to be created which includes factories to manufacture tools and equipment used for farming, banks to provide loans to farmers, a market for the goods produced, etc. The existence of many systems makes  a stable society.

Who invented a new method of making steel?

social studies north america voyages and discoveries scientific inventions and technological developments india's contemporary economic condition

  1. Henry Cort

  2. Henry Bessemer

  3. James Hargreaves

  4. Abraham Derby

Show answer
Correct Option: B
Explanation:

Sir Henry Bessemer was a prominent British engineer, inventor, and entrepreneur. He developed the first cost-efficient process for the manufacture of steel in 1856.

Who invented the steam locomotive engine?

social studies north america voyages and discoveries scientific inventions and technological developments india's contemporary economic condition

  1. James Watt

  2. Abraham Derby

  3. Faraday

  4. George Stephenson

Show answer
Correct Option: D
Explanation:

The first commercially successful steam locomotive named as  "Locomotion No. 1" was created by George Stephenson. It was used to carry passengers on a first public rail line in Britain, between the Stockton and Darlington Railway in 1825 .

Who constructed a network of canals?

social studies north america voyages and discoveries scientific inventions and technological developments india's contemporary economic condition

  1. James Hargreaves

  2. John Metcalfe

  3. Bessemer

  4. James Brindley

Show answer
Correct Option: D
Explanation:
James Brindley (1716-1772) was one of the early canal engineers who worked on some of the first canals of the modern era. He played an essential role in shaping the way canals were built during the Industrial Revolution.

Who invented the safety lamp?

social studies north america voyages and discoveries scientific inventions and technological developments india's contemporary economic condition

  1. Humphrey Davy

  2. Faraday

  3. Henry Cort

  4. John Smeaton

Show answer
Correct Option: A
Explanation:

The first ever prototype of Davy’s miner’s safety lamp. Created in 1815, it was designed to be lit safely for miners to use without allowing the heat from the flame to explode the concentration of methane gas often found as miners dug deeper.

Henry Cort introduced the ______ process for the purification of pig iron.

social studies north america voyages and discoveries scientific inventions and technological developments india's contemporary economic condition

  1. Weaving

  2. Spinning

  3. Pudding

  4. Smelting

Show answer
Correct Option: C
Explanation:

Henry Cort was an English ironmaster. In 1784 Cort introduced the pudding process for the purification of iron, where molten pig iron was stirred in a reverberatory furnace.

Who improved the ''Derby process''?

social studies north america voyages and discoveries scientific inventions and technological developments india's contemporary economic condition

  1. John Kay

  2. James Hargreaves

  3. Cartwright

  4. John Smeaton

Show answer
Correct Option: D

Who carried out an experiment to substitute coke for charcoal?

social studies north america voyages and discoveries scientific inventions and technological developments india's contemporary economic condition

  1. Davy

  2. Abraham Derby

  3. Henry Cort

  4. Faraday

Show answer
Correct Option: B
Explanation:

This study was carried out to determine the influence of using charcoal as a supplementary fuel on the microstructure and reduction properties of sinter. 


The primary fuel was coke breeze with 0, 20, 30 and 40% replacement of weight input with charcoal to produce sinter. 

Experimental results indicate that when the replacement percentage of charcoal to coke breeze increased from 0 to 40%, the porosity and FeO content of sinter also rose. 

These changes result in an enhancement from 79.8 to 84.3% for the reducibility index due to the increased reducing surface area. In addition, the reduction degradation of sinter also improves since degradation during crystalline transformation is restricted. 

Therefore, replacing coke breeze with charcoal is able to improve the reducing properties of sinter, which is beneficial to small and large blast furnace operation.

Who captured Constantinople?

social studies north america voyages and discoveries scientific inventions and technological developments india's contemporary economic condition

  1. Ottoman Turks

  2. French

  3. British

  4. Dutch

Show answer
Correct Option: A
Explanation:

 Constantinople was capital of the Eastern Roman Empire which was conquered by the Ottoman Army, under the command Ottoman Sultan Mehmed II on 29th May 1453.