IIT JEE प्रश्न और उत्तर का अभ्यास करें
8प्र: What is the Focus of an Earthquake? 1694 05b5cc6a3e4d2b4197774cc0f
5b5cc6a3e4d2b4197774cc0f- उत्तर देखेंउत्तर छिपाएं
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उत्तर :
व्याख्या :
A Focus of an earthquake is the location where the earthquake begins. The ground ruptures at this spot, then seismic waves radiate outward in all directions. At this focus point, the release of energy due to faulting actually occurs during an earthquake. The point directly above the focus on the surface is called Epicenter. The focus is also called as Hypocenter as it is the synonym of the focus.
प्र: A bag contains 3 red balls, 5 yellow balls and 7 pink balls. If one ball is drawn at random from the bag, what is the probability that it is either pink or red? 1694 05b5cc6a9e4d2b4197774cef6
5b5cc6a9e4d2b4197774cef6- 12/3true
- 21/8false
- 33/8false
- 43/4false
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उत्तर : 1. "2/3"
व्याख्या :
Answer: A) 2/3 Explanation: Given number of balls = 3 + 5 + 7 = 15 One ball is drawn randomly = 15C1 probability that it is either pink or red = 7C1 + 3C115C1 = 7 + 315 = 1015 = 23
प्र: Two girls ate dinner together. After that they both ordered iced tea. One girl drank them very fast and had finished five in the time it took the other to drink just one. The girl who drank one died while the other survived. However, all of the drinks that were served turned out to contain poison. How did the girl who drank the most survive? 1694 05b5cc67be4d2b4197774c1ea
5b5cc67be4d2b4197774c1ea- उत्तर देखेंउत्तर छिपाएं
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उत्तर :
व्याख्या :
The poison was in the ice. When the girl drank the iced tea, the ice was still fully frozen. Gradually, as the ice cubes melted the poison was released into the drink. Hence, the girl who died, drunk the tea after the ice melted. So, she was died.
प्र: How much does a gallon of water weigh? 1694 05b5cc6b4e4d2b4197774d4cf
5b5cc6b4e4d2b4197774d4cf- 12.741 kgsfalse
- 22.956 kgsfalse
- 33.418 kgsfalse
- 43.785 kgstrue
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उत्तर : 4. "3.785 kgs"
व्याख्या :
Answer: D) 3.785 kgs Explanation: 1 Gallon = 3.785 kgs Gallon is a unit of measurement of liquid. We know that 1 gallon = 3.785 liters But we know that, 1 cubic meter = 1000 lit or 1000 kgs => 1 lit = 1 kg Hence, 1 gallon = 3.785 lit = 3.785 kgs.
प्र: Statement: Air export volumes have increased substantially over the past decade causing backlogs and difficulties for air cargo agents because of increased demand for space and service.Courses of action:a. Airlines and air cargo agents should jointly work out a solution to combat the problem.b. The reasons for the increase in the volume of air exports should be found out. 1694 05b5cc764e4d2b4197774fd94
5b5cc764e4d2b4197774fd94- 1Only a followstrue
- 2Both a and b followsfalse
- 3Only b followsfalse
- 4Neither a nor b followsfalse
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उत्तर : 1. "Only a follows"
व्याख्या :
Answer: A) Only a follows Explanation: The problem faced, by the airlines and cargo agents is the non availability of cargo space. Therefore, right course of action is to combat the problem.
प्र: India is the largest producer of 1694 05b5cc69ae4d2b4197774c76e
5b5cc69ae4d2b4197774c76e- 1Cottonfalse
- 2Milkfalse
- 3Mangoesfalse
- 4All the abovetrue
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उत्तर : 4. "All the above"
व्याख्या :
Answer: D) All the above Explanation: As per the latest updates, India is : Largest producer of milk. Largest producer of millets in the world. Largest producer of jute. Largest producer of ginger. Largest producer of bananas. Largest producer of castor oil seeds. Largest producer of mangoes. Largest producer of safflower oil seeds. Largest producer of papayas. Largest producer of cottonseed (As per International Cotton Advisory Committee (ICAC) report for the month of March 2017) Second largest producer of tea, the first position being held by China. Second largest producer of sugarcane, the first position being held by Brazil. Second largest producer of wheat, the first position being held by China. Second largest producer of onions, the first position being held by China. Second largest producer of potatoes, the first position being held by China. Second largest producer of garlic, the first position being held by China. Second largest producer of rice, the first position being held by China. Second largest producer of cement., next to China. Second largest producer of silk, the first position being held by China.
प्र: Who has won the men's singles title at the 82nd Senior National Championship? 1693 05b5cc6bfe4d2b4197774da00
5b5cc6bfe4d2b4197774da00- 1H S Prannoytrue
- 2Ashwini Kumarfalse
- 3Rakesh Kumarfalse
- 4Kidambi Srikanthfalse
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उत्तर : 1. "H S Prannoy"
व्याख्या :
Answer: A) H S Prannoy Explanation: H S Prannoy has won the men’s singles title at the 82nd Senior National Championship Senior National Badminton Championships in Nagpur, Maharashtra on November 8, 2017. He defeated higher ranked Kidambi Srikanth in the final by 21- 15, 16- 21, 21-7.
प्र: Which of the following is not an Endocrine Gland? 1693 05b5cc69de4d2b4197774c8a8
5b5cc69de4d2b4197774c8a8- 1Spleentrue
- 2Pituitaryfalse
- 3Thyroidfalse
- 4Adrenalfalse
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उत्तर : 1. "Spleen"
व्याख्या :
Answer: A) Spleen Explanation: Endocrine glands are glands of the endocrine system that secrete their products, hormones, directly into the blood rather than through a duct. The major glands of the endocrine system include the pineal gland, pituitary gland, pancreas, ovaries, testes, thyroid gland, parathyroid gland, hypothalamus and adrenal glands.

