IIT JEE प्रश्न और उत्तर का अभ्यास करें
8प्र: When a women sells 20 articles for Rs. 160, there is 40% loss. How many articles should she sell for Rs. 240 in order to earn 20% profit ? 3576 05b5cc6c2e4d2b4197774dbc3
5b5cc6c2e4d2b4197774dbc3- 116false
- 215true
- 317false
- 414false
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उत्तर : 2. "15"
व्याख्या :
Answer: B) 15 Explanation: Given when she sells at Rs. 160 for 20 articles, she get 40% loss. Then, to get 20% profit selling at Rs. 240 for let 'P' articles => 1602060=240p120 => 120 x 160 x P = 20 x 70 x 240 => P = 15 articles.
प्र: Pipe K fills a tank in 30 minutes. Pipe L can fill the same tank 5 times as fast as pipe K. If both the pipes were kept open when the tank is empty, how much time will it take for the tank to overflow ? 3574 05b5cc75ee4d2b4197774fcc5
5b5cc75ee4d2b4197774fcc5- 13 minutesfalse
- 22 minutesfalse
- 34 minutesfalse
- 45 minutestrue
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उत्तर : 4. "5 minutes"
व्याख्या :
Answer: D) 5 minutes Explanation: Let the total capacity of tank be 90 liters.Capacity of tank filled in 1 minute by K = 3 liters.Capacity of tank filled in 1 minute by L = 15 liters.Therefore, capacity of the tank filled by both K and L in 1 minute = 18 liters.Hence, time taken by both the pipes to overflow the tank = 90/18 = 5 minutes.
प्र: In a certain code, MONKEY is written as XDJMNL. How is TIGER written in that code ? 3559 05b5cc6d9e4d2b4197774e820
5b5cc6d9e4d2b4197774e820- 1SHFDQfalse
- 2HFDSQfalse
- 3RSAFDfalse
- 4QDFHStrue
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उत्तर : 4. "QDFHS"
व्याख्या :
Answer: D) QDFHS Explanation: The letter of the word are written in a reverse order and then each letter is moved one step backward to obtain the code.
प्र: Which of the following metals forms an amalgam with other metals ? 3557 15b5cc6d9e4d2b4197774e86c
5b5cc6d9e4d2b4197774e86c- 1Mercurytrue
- 2Zincfalse
- 3Tinfalse
- 4Leadfalse
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उत्तर : 1. "Mercury"
व्याख्या :
Answer: A) Mercury Explanation:
प्र: 80% of 900 + 162 x 4 x ? = 113 - 99 3553 05b5cc669e4d2b4197774bf6d
5b5cc669e4d2b4197774bf6d- 10.5true
- 21false
- 34false
- 40false
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उत्तर : 1. "0.5"
व्याख्या :
Answer: A) 0.5 Explanation: 80x900/100 + 256 x 4 x ? = 1331 - 99 720 + 1024 x ? = 1232 ? = 1232 - 720/1024 ? = 512/1024 = 0.5 ? = 0.5
प्र: Choose the word which gives best meaning to the sentence from the given options. His recent success ______ him more arrogant than what he used to be 3540 05b5cc745e4d2b4197774fa45
5b5cc745e4d2b4197774fa45- 1makefalse
- 2have makefalse
- 3was makingfalse
- 4has madetrue
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उत्तर : 4. "has made"
व्याख्या :
Answer: D) has made Explanation: HIS RECENT SUCCESS HAS MADE HIM MORE ARROGANT THAN WHAT HE USED.
प्र: Which statement best describes Arteries? 3528 05b5cc6a5e4d2b4197774ccb0
5b5cc6a5e4d2b4197774ccb0- 1They have thin walls and transport blood away from the heartfalse
- 2They have thick walls and transport blood toward the heartfalse
- 3They have thin walls and transport blood toward the heartfalse
- 4They have thick walls and transport blood away from the hearttrue
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उत्तर : 4. "They have thick walls and transport blood away from the heart"
व्याख्या :
Answer: D) They have thick walls and transport blood away from the heart Explanation: Because arteries have to have thick walls for use of protection. Its when you get to veins where the walls get thinner. And the use of the heart is to pump blood to all of the cells and organs in the body so it would be to transport blood away from the heart. i.e. Arteries = Away from the Heart Veins = Back to the Heart.
प्र: Antibiotics are mostly obtained from 3524 15b5cc678e4d2b4197774c152
5b5cc678e4d2b4197774c152- 1Virusesfalse
- 2Fungitrue
- 3Bacteriafalse
- 4Angiospermsfalse
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उत्तर : 2. "Fungi"
व्याख्या :
Answer: B) Fungi Explanation: