IIT JEE प्रश्न और उत्तर का अभ्यास करें
8प्र: Which player has won the Gold Medal at World Badminton Championship 2017 ? 1399 05b5cc6c9e4d2b4197774df79
5b5cc6c9e4d2b4197774df79- 1Nozomi Okuharatrue
- 2Saina Nehwalfalse
- 3Carolina Marinfalse
- 4P V Sindhufalse
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उत्तर : 1. "Nozomi Okuhara"
व्याख्या :
Answer: A) Nozomi Okuhara Explanation:
प्र: 12 men complete a work in 9 days. After they have worked for 6 days, 4 more men join them. How many days will they take to complete the remaining work ? 1398 05b5cc6d7e4d2b4197774e700
5b5cc6d7e4d2b4197774e700- 12 daysfalse
- 22.5 daysfalse
- 32.25 daystrue
- 43 daysfalse
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उत्तर : 3. "2.25 days"
व्याख्या :
Answer: C) 2.25 days Explanation: 1 man's 1 day work = 1/108 12 men's 6 day's work = 1/9 x 6 = 2/3 Remaining work = 1 - 2/3 = 1/3 16 men's 1 day work = 1/108 x 16 = 4/274/27 work is done by them in 1 day. 1/3 work is done by them in 27/4 x 1/3 = 9/4 days.
प्र: The total of the ages of Ashok, Akbar and Anil is 65 years. What was the total of their ages six years ago ? 1398 05b5cc723e4d2b4197774f695
5b5cc723e4d2b4197774f695- 159false
- 243false
- 357false
- 447true
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उत्तर : 4. "47"
व्याख्या :
Answer: D) 47 Explanation: Let their ages be x, y, zHence given that x + y + z = 65Now, six years ago x age is x - 6, y is y - 6 and that of z is z - 6Then the sum of their ages six years ago is (x + y + z) - (6 + 6 + 6) = 65 - 18 = 47
प्र: Who has released a book on the noted author and journalist Khushwant Singh titled 'Khushwant Singh: In Wisdom and in Jest' ? 1397 05b5cc6cce4d2b4197774e153
5b5cc6cce4d2b4197774e153- 1Yogi Adityanathfalse
- 2Vijay Rupanifalse
- 3Shivraj Singhfalse
- 4Amarinder Singhtrue
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उत्तर : 4. "Amarinder Singh"
व्याख्या :
Answer: D) Amarinder Singh Explanation:
प्र: Where are genes located in the cell? 1397 05b5cc69be4d2b4197774c7d8
5b5cc69be4d2b4197774c7d8- उत्तर देखेंउत्तर छिपाएं
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उत्तर :
व्याख्या :
Genes are located on DNA present in the chromosome. Chromosomes are present in the nucleus of the cell.
प्र: Which of the following vitamins are water soluble? 1396 05b5cc66de4d2b4197774bf91
5b5cc66de4d2b4197774bf91- 1Vitamins B & Ctrue
- 2Vitamins K, D & Cfalse
- 3Vitamins A, D & Kfalse
- 4Vitamins A, K, B, C & Dfalse
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उत्तर : 1. "Vitamins B & C"
व्याख्या :
Answer: A) Vitamins B & C Explanation: Vitamins are essential nutrients found in foods. They perform specific and vital functions in a variety of body systems, and are crucial for maintaining optimal health. The two different types of vitamins are fat-soluble vitamins and water-soluble vitamins. Fat-soluble vitamins : Vitamins A, D, E and K — dissolve in fat before they are absorbed in the bloodstream to carry out their functions. Excesses of these vitamins are stored in the liver, and are not needed every day in the diet. Water-soluble vitamins : Vitamins dissolve in water and are not stored by the body. Since they are eliminated in urine, we require a continuous daily supply in our diet. The water-soluble vitamins include the vitamin B-complex group and vitamin C. Water-soluble vitamins are easily destroyed or washed out during food storage or preparation.
प्र: Value of vehicle at end of each year depreciates at the rate of 3/5th of value at the beginning. If Initial value is 10,000Rs then at the end of three years its value is ? 1396 05b5cc715e4d2b4197774f472
5b5cc715e4d2b4197774f472- 1Rs. 6000false
- 2Rs. 3600false
- 3Rs. 2160true
- 4Rs. 415false
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उत्तर : 3. "Rs. 2160"
व्याख्या :
Answer: C) Rs. 2160 Explanation: End of first year : 10000 x (3/5) = Rs. 6000End of second year : 6000 x (3/5) = Rs. 3600End of third year : 3600 x (3/5) = Rs. 2160
प्र: At what temperature (in Fahrenheit) pure water freezes? 1396 05b5cc6b9e4d2b4197774d6f8
5b5cc6b9e4d2b4197774d6f8- 10false
- 217false
- 332true
- 439false
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उत्तर : 3. "32"
व्याख्या :
Answer: C) 32 Explanation: 32oFWe know that T(°F) = T(°C) × 1.8 + 3232(°F) = 0(°C)

