IIT JEE Practice Question and Answer
8Q: Find the total numbers greater than 4000 that can be formed with digits 2, 3, 4, 5, 6 no digit being repeated in any number ? 1624 05b5cc6cde4d2b4197774e1db
5b5cc6cde4d2b4197774e1db- 1120false
- 2256false
- 3192true
- 4244false
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Answer : 3. "192"
Explanation :
Answer: C) 192 Explanation: We are having with digits 2, 3, 4, 5 & 6 and numbers greater than 4000 are to be formed, no digit is repeated. The number can be 4 digited but greater than 4000 or 5 digited. Number of 4 digited numbers greater than 4000 are4 or 5 or 6 can occupy thousand place => 3 x P34 = 3 x 24 = 72. 5 digited numbers = P55 = 5! = 120 So the total numbers greater than 4000 = 72 + 120 = 192
Q: Antonym of the word DOLEFUL : 1624 05b5cc6cee4d2b4197774e251
5b5cc6cee4d2b4197774e251- 1Lamentablefalse
- 2Dismalfalse
- 3Pitifulfalse
- 4Gladtrue
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Answer : 4. "Glad"
Explanation :
Answer: D) Glad Explanation:
Q: The interstate commerce act of 1887 required 1624 05b5cc67ee4d2b4197774c239
5b5cc67ee4d2b4197774c239- Show AnswerHide Answer
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Answer :
Explanation :
The Interstate Commerce Act of 1887 is a United States federal law that was designed to regulate the railroad industry, particularly its monopolistic practices. The reason that the Interstate Commerce Act required that rates be published was to avoid secret rebates and similar deals. Until then, big shippers would demand rebates from railroads, which would in effect reduce their shipping costs without letting competitors know. This is anti-competitive. Hence, the Act required that railroad rates be "reasonable and just," but did not empower the government to fix specific rates.
Q: A laborer is engaged for 30 days on the condition that he receives Rs.25 for each day he works and is fined Rs.7.50 for each day is absent. He gets Rs.425 in all. For how many days was he absent ? 1624 05b5cc6dfe4d2b4197774ead0
5b5cc6dfe4d2b4197774ead0- 110 daystrue
- 214 daysfalse
- 311 daysfalse
- 49 daysfalse
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Answer : 1. "10 days"
Explanation :
Answer: A) 10 days Explanation: For 30 days he receives 30 x 25 = 750 Actually he gets 425 Therefore, Fine is 750 - 425 = 325 => No of days absent = 325/(25+7.50)= 10
Q: P can do a piece of work in 5 less days than Q. If both of them can do the same work in 1119days, in how many days will Q alone do the same work ? 1624 05b5cc6c2e4d2b4197774dbcd
5b5cc6c2e4d2b4197774dbcd- 124 daysfalse
- 225 daystrue
- 320 daysfalse
- 419 daysfalse
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Answer : 2. "25 days"
Explanation :
Answer: B) 25 days Explanation: Let Q complete that work in 'L' days => 1L + 1L-5 = 9100 => 9L2-245L+500=0 L = 25 days.
Q: An express traveled at an average speed of 100 km/hr, stopping for 4 min after every 75 km. How long did it take to reach its destination 600 km from the starting point ? 1623 05b5cc6e1e4d2b4197774eba7
5b5cc6e1e4d2b4197774eba7- 16 hrs 24 minfalse
- 26 hrsfalse
- 37 hrs 21 minfalse
- 46 hrs 28 mintrue
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Answer : 4. "6 hrs 28 min"
Explanation :
Answer: D) 6 hrs 28 min Explanation: Time taken to cover 600 km = 600/100 = 6 hrs. Number of stoppages = 600/75 - 1 = 7 Total time of stoppages = 4 x 7 = 28 min Hence, total time taken = 6 hrs 28 min.
Q: Which of the following is an example of market failure? 1623 05b5cc6a7e4d2b4197774cdf4
5b5cc6a7e4d2b4197774cdf4- 1Prices do not reflect the full social cost of productiontrue
- 2A firm goes out of business because it cannot find a market for its productsfalse
- 3Prices rise so that the consumers cannot afford the products they want to buyfalse
- 4Producer surplus is maximizedfalse
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Answer : 1. "Prices do not reflect the full social cost of production"
Explanation :
Answer: A) Prices do not reflect the full social cost of production Explanation: Prices do not reflect the full social cost of production is an example of Market failure. A market failure occurs when the supply of a good or service is insufficient to meet demand. This results in an inefficient distribution of resources among market participants. It also occurs if externalities are not accounted for. If a firm fails to maximize its profits this is not a general market failure.
Q: In which Organelle does Cellular Respiration Occur? 1623 05b5cc6b3e4d2b4197774d48c
5b5cc6b3e4d2b4197774d48c- 1Chloroplastfalse
- 2ATP and NADPHfalse
- 3Cytoplasmfalse
- 4Mitochondriatrue
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Answer : 4. "Mitochondria"
Explanation :
Answer: D) Mitochondria Explanation: Mitochondria is the Organelle in which Cellular Respiration Occur.