921General KnowledgeMedium
Paper was invented by: __________?
AAlexander Flemming
MCQs
Read every question, see the correct answer, and understand the explanation at your own pace. Study mode has no timer and no negative marking.
Correct answer
B. Cai Lun
Explanation
Cai Lun, formerly romanized as Ts’ai Lun, was a Chinese eunuch court official of the Eastern Han dynasty. He is traditionally regarded as the inventor of paper and the modern papermaking process.
Correct answer
A. Speed of Air
Explanation
A velometer is a device used to measure the speed of air in a given area. Often, the amount of air flow in the environment is directly proportional to the degree of corrosion experienced by a metallic structure and the drying rate of protective paints that are used to coat such structures.
Correct answer
D. Both
Explanation
Both is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
A. Canada
Explanation
Canada is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
B. Kyiv
Explanation
Kyiv or Kiev is the capital and most populous city of the country of Ukraine. It is in north-central Ukraine along the Dnieper River. As of 1 January 2021 its population was 2,962,180 making Kyiv the seventh-most populous city in Europe.
Correct answer
A. Ibn e Insha
Explanation
Ibn e Insha, real name Sher Muhammad Khan, born June 15, 1927, died on January 11, 1978, was a leftist Urdu poet, humorist, travelogue writer, and columnist. He is regarded as one of the best humorists in Urdu.
Correct answer
A. 4
Explanation
4 NATO countries share border with Ukraine. which are: Poland, Slovakia, Hungary, Romania.
Correct answer
C. New Zealand
Explanation
New Zealand is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
C. Madrid
Explanation
International Olive Oil council (IOC) was set up in 1959, in Madrid, Spain
Correct answer
B. Xinjiang province
Explanation
Xinjiang province is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.