IIT JEE Practice Question and Answer
8Q: When was Barb Wire patented 1317 05b5cc6bae4d2b4197774d7b7
5b5cc6bae4d2b4197774d7b7- 11898false
- 21868false
- 31874true
- 41866false
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 3. "1874"
Explanation :
Answer: C) 1874 Explanation: Joseph F. Glidden - Father of Barbed Wire. Glidden was born in New York in 1812. He invented Barbed Wire in 1873 and was granted the patent on Nov. 24, 1874. After a three year battle over the patent, which he eventually won received a patent for the modern invention in 1874 after he made his own modifications to previous versions.
Q: Indians who have been featured on Forbe's list of the 100 Greatest Living Business Minds ? 1313 05b5cc6c4e4d2b4197774dcf1
5b5cc6c4e4d2b4197774dcf1- 1Ratan Tatafalse
- 2Lakshmi Mittalfalse
- 3Vinod Khoslafalse
- 4All of the abovetrue
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 4. "All of the above"
Explanation :
Answer: D) All of the above Explanation: Three Indians – Ratan Tata, Lakshmi Mittal and Vinod Khosla have been featured on Forbe's list of the 100 Greatest Living Business Minds.
Q: Which of these artist was principally entrusted with the task of 'Illuminating' the original document of the Constitution of India ? 1313 05b5cc6c2e4d2b4197774dc04
5b5cc6c2e4d2b4197774dc04- 1Benode Behari Mukherrjeefalse
- 2Nand lal Bosetrue
- 3Abanindranath Tagorefalse
- 4Ram Kinkar Baijfalse
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 2. "Nand lal Bose"
Explanation :
Answer: B) Nand lal Bose Explanation:
Q: A lady took loan from a bank at the rate of 12% p.a. simple interest. After 3 years she had to pay Rs. 5400 interest only for the period. The principal amount borrowed by her was : 1310 05b5cc6dbe4d2b4197774e904
5b5cc6dbe4d2b4197774e904- 1Rs. 15,000true
- 2Rs. 1,50,000false
- 3Rs. 1500false
- 4Rs. 1,62,000false
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 1. "Rs. 15,000"
Explanation :
Answer: A) Rs. 15,000 Explanation: Principal = Rs.(100 x 5400)/(12 x 3)= Rs. 15000.
Q: A can complete a piece of work in 12 days and B is 60% more efficient than A. In how many days B will complete the same work ? 1306 05b5cc6dde4d2b4197774ea05
5b5cc6dde4d2b4197774ea05- 18.7 hrsfalse
- 25.2 hrsfalse
- 35 hrsfalse
- 47.5 hrstrue
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 4. "7.5 hrs"
Explanation :
Answer: D) 7.5 hrs Explanation: Ratio of times taken by A and B = 160 : 100A can do the work in 12 daysLet B can do the work in "D" days=> 160:100 = 12 : D=> D = 12 x 100/160 = 7.5 hrs
Q: To fill 8 vacancies there are 15 candidates of which 5 are from ST. If 3 of the vacancies are reserved for ST candidates while the rest are open to all, Find the number of ways in which the selection can be done ? 1305 05b5cc6c4e4d2b4197774dcb3
5b5cc6c4e4d2b4197774dcb3- 17920true
- 274841false
- 314874false
- 410213false
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 1. "7920"
Explanation :
Answer: A) 7920 Explanation: ST candidates vacancies can be filled by C35 ways = 10 Remaining vacancies are 5 that are to be filled by 12 => C512= (12x11x10x9x8)/(5x4x3x2x1) = 792 Total number of filling the vacancies = 10 x 792 = 7920
Q: How many minutes does a watch lose per day, if its hands coincide every 64 minutes ? 1305 05b5cc6d7e4d2b4197774e714
5b5cc6d7e4d2b4197774e714- 136 7/9 minfalse
- 232 8/11 mintrue
- 334 3/11 minfalse
- 465 5/11 minfalse
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 2. "32 8/11 min"
Explanation :
Answer: B) 32 8/11 min Explanation: 55 min. spaces are covered in 60 min. 60 min. spaces are covered in min. = min. Loss in 64 min. = min. Loss in 24 hrs = min. = min.
Q: Which results in an increase in power? 1299 05b5cc669e4d2b4197774bf87
5b5cc669e4d2b4197774bf87- 1doing more work in less time.true
- 2doing less work in more time.false
- 3doing less work in less time.false
- 4doing more work in more time.false
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 1. "doing more work in less time."
Explanation :
Answer: A) doing more work in less time. Explanation: Doing more work in less time, results in an increase in power to do a work.