Tag: voyages and discoveries

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

What vast system needs to be created for agriculture?

  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
Reveal answer Fill a bubble to check yourself
D Correct answer
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.

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

Who invented a new method of making steel?

  1. Henry Cort

  2. Henry Bessemer

  3. James Hargreaves

  4. Abraham Derby
Reveal answer Fill a bubble to check yourself
B Correct answer
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.

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

Who invented the steam locomotive engine?

  1. James Watt

  2. Abraham Derby

  3. Faraday

  4. George Stephenson
Reveal answer Fill a bubble to check yourself
D Correct answer
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 .

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

Who constructed a network of canals?

  1. James Hargreaves

  2. John Metcalfe

  3. Bessemer

  4. James Brindley
Reveal answer Fill a bubble to check yourself
D Correct answer
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.
Multiple choice social studies north america voyages and discoveries scientific inventions and technological developments india's contemporary economic condition

Who invented the safety lamp?

  1. Humphrey Davy

  2. Faraday

  3. Henry Cort

  4. John Smeaton
Reveal answer Fill a bubble to check yourself
A Correct answer
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.

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

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

  1. Weaving

  2. Spinning

  3. Pudding

  4. Smelting
Reveal answer Fill a bubble to check yourself
C Correct answer
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.

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

Who carried out an experiment to substitute coke for charcoal?

  1. Davy

  2. Abraham Derby

  3. Henry Cort

  4. Faraday
Reveal answer Fill a bubble to check yourself
B Correct answer
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.