IIT JEE प्रश्न और उत्तर का अभ्यास करें
8प्र: A container contains 120 lit of Diesel. From this container, 12 lit of Diesel was taken out and replaced by kerosene. This process was further repeated for two times. How much diesel is now there in the container ? 1298 05b5cc6c3e4d2b4197774dc86
5b5cc6c3e4d2b4197774dc86- 188.01 litfalse
- 287.48 littrue
- 387.51 litfalse
- 487.62 litfalse
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उत्तर : 2. "87.48 lit"
व्याख्या :
Answer: B) 87.48 lit Explanation: For these type of problems, Quantity of Diesel remained = q1-pqn Here p = 12 , q = 120 => 1201-121203 = 120 x 0.9 x 0.9 x 0.9 = 87.48 lit.
प्र: One-third of the boys and one-half of the girls of a college participated in a sport. If the number of participating students is 300, out of which 100 are boys. What is the total number of students in the college ? 1168 05b5cc6c3e4d2b4197774dc8b
5b5cc6c3e4d2b4197774dc8b- 1550false
- 2575false
- 3625false
- 4700true
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उत्तर : 4. "700"
व्याख्या :
Answer: D) 700 Explanation: Let number of boys = B Number of girls = G From the given data, 1B/3 + 1G/2 = 300 But given B/3 = 100 => B = 300 G/2 = 300 - 100 G = 200 x 2 => G = 400 Therefore, total number of students in the college = B + G = 700.
प्र: "World Fisheries Day" is observed on _____ ? 1314 05b5cc6c3e4d2b4197774dc72
5b5cc6c3e4d2b4197774dc72- 121st Novtrue
- 211th Decfalse
- 310th Octfalse
- 429th Sepfalse
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उत्तर : 1. "21st Nov"
व्याख्या :
Answer: A) 21st Nov Explanation:
प्र: The Dibang Wildlife Sanctuary is located in which state of India ? 1415 05b5cc6c3e4d2b4197774dc6d
5b5cc6c3e4d2b4197774dc6d- 1Keralafalse
- 2Haryanafalse
- 3Arunachal Pradeshtrue
- 4Maharashtrafalse
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उत्तर : 3. "Arunachal Pradesh"
व्याख्या :
Answer: C) Arunachal Pradesh Explanation: The Dibang Wildlife Sanctuary is one of the eight wildlife sanctuaries of Arunachal Pradesh, India.
प्र: Amith can row a boat d km upstream and the same distance downstream in 5 hours 15 minutes. Also, he can row the boat 2d km upstream in 7 hours. How long will it take to row the same distance 2d km downstream for Amith ? 3148 05b5cc6c3e4d2b4197774dc63
5b5cc6c3e4d2b4197774dc63- 14 hrs 10 minfalse
- 23 hrs 15 minfalse
- 33 hrs 30 mintrue
- 44 hrs 1 minfalse
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उत्तर : 3. "3 hrs 30 min"
व्याख्या :
Answer: C) 3 hrs 30 min Explanation: Let the speed of boat and stream be x and y kmph respectively. According to question d/x+y + d/x-y = 5h 15m or 21/4 hrs ......(i) and 2d/x-y = 7...... (ii) From eq. (i) and (ii) 2d/x+y = 7/2 Hence, Amith will take to row 2d km distance downstream in 7/2 hrs = 3.5 hrs = 3 hrs 30 min.
प्र: At an examination in which maximum marks are 500. P got 10% less than Q, Q got 25% more than R and R got 20% less than S. If P got 360 marks what percentage of marks was obtained by S ? 1660 05b5cc6c3e4d2b4197774dc54
5b5cc6c3e4d2b4197774dc54- 177false
- 274false
- 380true
- 483false
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उत्तर : 3. "80"
व्याख्या :
Answer: C) 80 Explanation: Let marks obtained by S = M R's marks = 0.80M Q's marks = 1.25 (0.80M) P's marks = (0.90) (1.25) (0.80M) = 0.9M But 0.9M = 360 M = ? M = 400 Hence % of marks obtained by S = 400/500 x 100 = 80%.
प्र: Which Bank has launched 'Project Nishchay' in partnership with The Boston Consulting Group (BCG) ? 1408 05b5cc6c3e4d2b4197774dc4a
5b5cc6c3e4d2b4197774dc4a- 1SBIfalse
- 2Dena Bankfalse
- 3IDBI Banktrue
- 4Yes Bankfalse
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उत्तर : 3. "IDBI Bank"
व्याख्या :
Answer: C) IDBI Bank Explanation: IDBI Bank has launched 'Project Nishchay' in partnership with The Boston Consulting Group (BCG) to accelerate its turnaround programme and improve financial performance.
प्र: A man reads 3/7 of a book on a day and 2/5 of the remaining, on the second day. If the number of pages still unread are 36, how many pages did the book contain ? 1469 05b5cc6c3e4d2b4197774dc4f
5b5cc6c3e4d2b4197774dc4f- 1105true
- 2101false
- 398false
- 4109false
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उत्तर : 1. "105"
व्याख्या :
Answer: A) 105 Explanation: Let number of pages in a book = p According to questions p - [3p/7 + (2/5 x 4p/7)] = 36 = p - 23p/35 = 36 => 12p = 36 × 35 p = 105

