IIT JEE Practice Question and Answer
8Q: During which process is water produced? 2494 05b5cc655e4d2b4197774bd5f
5b5cc655e4d2b4197774bd5f- 1Acetyl COA formationfalse
- 2Electron transport chaintrue
- 3Alcohol fermentationfalse
- 4citric acid cyclefalse
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Answer : 2. "Electron transport chain"
Explanation :
Answer: B) Electron transport chain Explanation:
Q: Which structural formula represents a dipole? 2493 05b5cc675e4d2b4197774c125
5b5cc675e4d2b4197774c125- 14false
- 23false
- 32false
- 41true
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Answer : 4. "1"
Explanation :
Answer: D) 1 Explanation: What is Dipole : when two atoms in a molecule have substantially different electronegativity: One atom attracts electrons more than another, becoming more negative, while the other atom becomes more positive.
Q: " Kamarupa " is the old name of ______ state ? 2492 05b5cc6d3e4d2b4197774e509
5b5cc6d3e4d2b4197774e509- 1Biharfalse
- 2Assamtrue
- 3Bengalfalse
- 4Odishafalse
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Answer : 2. "Assam"
Explanation :
Answer: B) Assam Explanation: Alternately it is also called as Pragjyotisha before British rule.
Q: A motorboat can go 10 miles downstream on a river in 20 min. It takes 30 min for this boat to go back at the same 10 miles. Find the speed of the current ? 2491 05b5cc6bfe4d2b4197774da29
5b5cc6bfe4d2b4197774da29- 18 m/hfalse
- 25 m/htrue
- 37 m/hfalse
- 46 m/hfalse
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Answer : 2. "5 m/h"
Explanation :
Answer: B) 5 m/h Explanation: As the distance travelled is constant, the time taken is inversely proportional to speed. Let 'u' be the speed of the current and 'v' be the speed of the boat. Speed of the boat downstream = v + u & upstream = v - u => v+u/v-u = 30/20 => v/u = 5 => v = 5u => v + u = 6u = 10/20/60 miles/hr => 6u = 30 m/h => u = 5 m/h
Q: The difference between the time taken by two trains to travel a distance of 350 km is 2 hours 20 minutes. If the difference between their speeds is 5 km/hr, what is the speed of faster train ? 2491 05b5cc6c9e4d2b4197774df6a
5b5cc6c9e4d2b4197774df6a- 136 kmphfalse
- 230 kmphtrue
- 334 kmphfalse
- 440 kmphfalse
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Answer : 2. "30 kmph"
Explanation :
Answer: B) 30 kmph Explanation: Let the speed of the faster train be 'S' kmph Then speed of the slower train will be '(S-5)' kmph Time taken by faster train = 350/S hrs Time taken by slower train = 350/(S-5) hrs 350s-5 - 350s = 2 hrs 20 min = 213 = 73 => S = 30 km/hr.
Q: What group sets hunting regulations in most states? 2489 05b5cc615e4d2b4197774b6a2
5b5cc615e4d2b4197774b6a2- 1Forest management agencyfalse
- 2Head hunting firms agencyfalse
- 3Hunting outfitters agencyfalse
- 4A wildlife management agencytrue
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Answer : 4. "A wildlife management agency"
Explanation :
Answer: D) A wildlife management agency Explanation: A wildlife management agency sets hunting regulations in most states. These agencies will have regular meetings where the public can voice their concerns and make suggestions. Hunters wishing to propose changes to the regulations should participate in these meetings or join a hunting organization that interacts with the agency.
Q: The reflex angle between the hands of a clock at 11:35 is ? 2489 05b5cc720e4d2b4197774f622
5b5cc720e4d2b4197774f622- 1137.5 degreesfalse
- 2222.5 degreestrue
- 3192.5 degreesfalse
- 4330 degreesfalse
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Answer : 2. "222.5 degrees"
Explanation :
Answer: B) 222.5 degrees Explanation: Apply the formula for finding the angle:Angle=(30h-(11/2)m( where m stands for minutes and h stands for hours)Hence, 30x11 - 11/2x35 = 330 - 192.5 = 137.5 degreesThe reflex angle = 360 - 192.5 degree = 222.5 degrees.
Q: The third proportional to 9 and 12 is ? 2488 05b5cc6e9e4d2b4197774ede8
5b5cc6e9e4d2b4197774ede8- 114false
- 216true
- 318false
- 420false
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Answer : 2. "16"
Explanation :
Answer: B) 16 Explanation: Let the third proportion to 9 & 12 be 'x'. => 9:12 = 12 :p => p = 12x12/9 = 16.

