IIT JEE Practice Question and Answer
8Q: Digitized information can be used by computers. 1870 05b5cc699e4d2b4197774c73d
5b5cc699e4d2b4197774c73d- 1TRUEtrue
- 2FALSE Answer & Explanation Answer:false
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Answer : 1. "TRUE"
Explanation :
Answer: A) TRUE Explanation: TRUE. The computers and electronic devices use digitized information which is easily understood by them. Digitization is the process of converting analog signals or information of any form into a digital format that can be understood by computer systems or electronic devices. The term is used when converting information, like text, images or voices, and sounds, into binary code.
Q: The most populous city in the world is ? 1869 05b5cc6e0e4d2b4197774eb3e
5b5cc6e0e4d2b4197774eb3e- 1Tokyotrue
- 2Parisfalse
- 3Pekingfalse
- 4Londonfalse
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Answer : 1. "Tokyo"
Explanation :
Answer: A) Tokyo Explanation:
Q: What kind of mathematics do scientists use to analyze data? 1869 05b5cc67be4d2b4197774c1ff
5b5cc67be4d2b4197774c1ff- 1Algebrafalse
- 2Calculusfalse
- 3Geometryfalse
- 4Statisticstrue
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Answer : 4. "Statistics"
Explanation :
Answer: D) Statistics Explanation: Statistics is a branch of mathematics dealing with the collection, analysis, interpretation, presentation, and organization of data. All scientists uses Statistics for analysing data.
Q: Who invented Bifocal Lens? 1869 05b5cc6b9e4d2b4197774d6d5
5b5cc6b9e4d2b4197774d6d5- 1John Adamsfalse
- 2Benjamin Franklintrue
- 3James Madisonfalse
- 4Thomas Jeffersonfalse
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Answer : 2. "Benjamin Franklin"
Explanation :
Answer: B) Benjamin Franklin Explanation: Benjamin Franklin has long been credited with the invention of bifocal lenses and he was the first to wear bifocal lenses. He did not produce them himself but instead had some optician in London or France make them for him to overcome Presbyopia, a condition that Franklin suffered. He was tired switching between lenses for far and near sightedness. And that resulted in inventing Bifocal Lenses.
Q: How many feet are in a meter? 1869 05b5cc6bae4d2b4197774d7d5
5b5cc6bae4d2b4197774d7d5- 13.214false
- 23.28084true
- 33.2516false
- 43.21456false
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Answer : 2. "3.28084"
Explanation :
Answer: B) 3.28084 Explanation: We know that, 1 meter = 100 cms. => 1 meter = 3.28084 feet.
Q: If the digits in the number 25673948 are arranged in ascending order from left to right, what will be the sum of the digits which are fourth from the right and third from the left in the new arrangement? 1869 05b5cc7f2e4d2b41977751e7a
5b5cc7f2e4d2b41977751e7a- 110true
- 29false
- 38false
- 46false
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Answer : 1. "10"
Explanation :
Answer: A) 10 Explanation: Given Number : 2 5 6 7 3 9 4 8 Ascending order : 2 3 4 5 6 7 8 9 Specified letters are 6 and 4 respectively. Hence, required sum = (4 + 6 = 10)
Q: Which of the following elements has the highest electronegativity? 1869 05b5cc62fe4d2b4197774b95f
5b5cc62fe4d2b4197774b95f- 1Chlorinefalse
- 2Brominefalse
- 3Fluorinetrue
- 4Heliumfalse
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Answer : 3. "Fluorine"
Explanation :
Answer: C) Fluorine Explanation: Electronegativity refers to the ability of an atom to attract shared electrons in a covalent bond. The higher the value of the electronegativity, the more strongly that element attracts the shared electrons. Electronegativity increases from bottom to top in groups, and increases from left to right across periods. Thus, fluorine is the most electronegative element and lithium is the least.
Q: In general, which is the cause of a land breeze? 1868 05b5cc626e4d2b4197774b846
5b5cc626e4d2b4197774b846- 1Pressurefalse
- 2Heatfalse
- 3Temperaturetrue
- 4None of the abovefalse
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Answer : 3. "Temperature"
Explanation :
Answer: C) Temperature Explanation: The land breeze is a coastal breeze at night blowing from the land to the ocean. It is caused by the difference in the rates of cooling of the land and of the ocean. Once again, the bigger the difference in temperature between the two, the stronger the wind.

