IIT JEE प्रश्न और उत्तर का अभ्यास करें
8प्र: Find the ODD number ? 1641 05b5cc6cce4d2b4197774e167
5b5cc6cce4d2b4197774e167- 142false
- 2142true
- 3119false
- 421false
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उत्तर : 2. "142"
व्याख्या :
Answer: B) 142 Explanation: Except 142 all are divisible by number '7'.
प्र: What is the functional unit of a skeletal muscle called? 1641 05b5cc690e4d2b4197774c41d
5b5cc690e4d2b4197774c41d- 1Myofibrilfalse
- 2Sarcomeretrue
- 3Fiberfalse
- 4Fasciculusfalse
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उत्तर : 2. "Sarcomere"
व्याख्या :
Answer: B) Sarcomere Explanation: The myofibrils are composed of actin and myosin filaments, repeated in units called sarcomeres, which are the basic functional units of the skeletal muscle.
प्र: Who invented Bifocal Lens? 1641 05b5cc6b9e4d2b4197774d6d5
5b5cc6b9e4d2b4197774d6d5- 1John Adamsfalse
- 2Benjamin Franklintrue
- 3James Madisonfalse
- 4Thomas Jeffersonfalse
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उत्तर : 2. "Benjamin Franklin"
व्याख्या :
Answer: B) Benjamin Franklin Explanation: Benjamin Franklin has long been credited with the invention of bifocal lenses and he was the first to wear bifocal lenses. He did not produce them himself but instead had some optician in London or France make them for him to overcome Presbyopia, a condition that Franklin suffered. He was tired switching between lenses for far and near sightedness. And that resulted in inventing Bifocal Lenses.
प्र: If the average height of boys in a hall is 180 cm and that of girls is 150 cm. If the average height of the gathering is 165 cm, then find the number of girls present in the hall if the number of boys present in the hall are 78 ? 1641 05b5cc6c7e4d2b4197774dea0
5b5cc6c7e4d2b4197774dea0- 156false
- 264false
- 387false
- 478true
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उत्तर : 4. "78"
व्याख्या :
Answer: D) 78 Explanation: Using Trial and error method, we get the number of girls in the hall = 78
प्र: " Rani ki Vav " an archaeological attraction is located in which of the following states ? 1641 05b5cc6fbe4d2b4197774f0e2
5b5cc6fbe4d2b4197774f0e2- 1Andhra Pradeshfalse
- 2Telanganafalse
- 3Rajasthanfalse
- 4Gujarattrue
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उत्तर : 4. "Gujarat"
व्याख्या :
Answer: D) Gujarat Explanation: Rani ki Vav meaning the Queen’s Stepwell is an archaeological site in the state of Gujarat. Beauitfully structured, the site has been included in the list of international heritage sites by UNESCO. With the help of the ambitious project, The Scottish Ten, Rani ki Vav is among the five heritage sites that would be recreated digitally for managment and conservation.
प्र: In an exhibition, Almond bought a painting for Rs. 20000. He later sold it to Olive for Rs. 23000. Olive sold it to Sarah for double the profit percentage that Almond earned. At what price should Sarah sell this painting to earn 8% profit ? 1640 05b5cc6c4e4d2b4197774dcf6
5b5cc6c4e4d2b4197774dcf6- 1Rs. 34,410false
- 2Rs. 31,184false
- 3Rs. 29,999false
- 4Rs. 32,292true
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उत्तर : 4. "Rs. 32,292"
व्याख्या :
Answer: D) Rs. 32,292 Explanation: Almond Selling price = CP(1 + P%/100) => CP = 20000, SP = 23000 => 23000 = 20000 (1 + P/100) => P% = 100(23000/20000 - 1) = 15 Then, Olive's P% = 30% SP for Olive = CP for Sarah = 23000(1 + 30/100) = 29900 Now Sarah wants to earn profit of 8% => Sp for Sarah = 29900(1 + 8/100) = Rs. 32,292.
प्र: The length, breadth and height of a room are in the ratio 7:3:1. If the breadth and height are doubled while the length is halved, then by what percent the total area of the 4 walls of the room will be increased ? 1640 05b5cc6c6e4d2b4197774de18
5b5cc6c6e4d2b4197774de18- 190%true
- 288%false
- 385%false
- 484%false
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उत्तर : 1. "90%"
व्याख्या :
Answer: A) 90% Explanation: Let length, breadth and height of the room be 7, 3, 1 unit respectively. Area of walls = 2(l+b)xh = 2(7+3)x1 = 20 sq. unit. Now, length, breadth and height of room will become 3.5, 6 and 2 respectively. Area of walls = 2(l+b)xh = 2(3.5+6)x2 = 38 sq. unit. % Increase in the area of walls = (38-20)x100/20 = 90%.
प्र: Which of the Phrases (1), (2), (3) and (4) given below should replace the phrases printed in bold in the sentence to make it grammatically correct. They claim that their employees are highly committing and disciplined. 1640 05b5cc6cce4d2b4197774e12e
5b5cc6cce4d2b4197774e12e- 1Have been highly committedfalse
- 2Have high commitmentsfalse
- 3Are highly committedtrue
- 4No correction requiredfalse
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उत्तर : 3. "Are highly committed"
व्याख्या :
Answer: C) Are highly committed Explanation: As per the rule of adverb, the adverb is followed by the third form of verb.

