IIT JEE प्रश्न और उत्तर का अभ्यास करें
8प्र: Who is the author of the book "Flaming Tresses of Draupadi" ? 2041 05b5cc6f8e4d2b4197774f08b
5b5cc6f8e4d2b4197774f08b- 1Smriti Iranifalse
- 2Veerappa Moilytrue
- 3Mallikarjun Khargefalse
- 4Nonefalse
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उत्तर : 2. "Veerappa Moily"
व्याख्या :
Answer: B) Veerappa Moily Explanation:
प्र: If price of rice increased by 25%, so that a man is can able to purchase 5 kg less rice in Rs. 500. Find the original price of rice per kg ? 2040 05b5cc6c3e4d2b4197774dc31
5b5cc6c3e4d2b4197774dc31- 1Rs. 20true
- 2Rs. 24false
- 3Rs. 26false
- 4Rs. 29false
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उत्तर : 1. "Rs. 20"
व्याख्या :
Answer: A) Rs. 20 Explanation: Let the original price of rice be Rs. x Let rice a man can buy for Rs. 500 at rs. x/kg be = R kgs From given data, for Rs. 500 x ---- R kgs (x + 25x/100) ---- (R - 5) kgs => Rx = (R - 5)(x + 25x/100) => Rx = (R - 5)(125x/100) => 100Rx = 125Rx - 625x => R = 25 So at rate of Rs. x/kg, man get 25 kgs for Rs. 500 => x = 500/25 = Rs. 20
प्र: Shamma lends Rs.40,000 to two of her friends. She gives Rs.24,000 to the first at 8% p.a. simple interest. Shamma wants to make a profit of 10% on the whole. The simple interest rate at which she should lend the remaining sum of money to the second friend is: 2040 05b5cc6b7e4d2b4197774d624
5b5cc6b7e4d2b4197774d624- 113%true
- 28.5%false
- 39.5%false
- 411.25%false
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उत्तर : 1. "13%"
व्याख्या :
Answer: A) 13% Explanation: The ratio of money she lended is 24000 : 16000 = 3 : 2 Let the rate of interest be R% 8% R% 10 3 : 2 R = 13%.
प्र: DNA can be found in what Organelles? 2040 05b5cc6b5e4d2b4197774d506
5b5cc6b5e4d2b4197774d506- 1Chloroplasts and Mitichondriatrue
- 2Nucleus and Ribosomesfalse
- 3Ribosomes and Mitochondriafalse
- 4Endoplasmic Reticulum and Nucleusfalse
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उत्तर : 1. "Chloroplasts and Mitichondria"
व्याख्या :
Answer: A) Chloroplasts and Mitichondria Explanation: DNA can be found in 3 Organelles namely Nucleus, Mitochondria in animals and Chloroplasts in plants.
प्र: A relationship can be damaged by 2040 05b5cc615e4d2b4197774b6a9
5b5cc615e4d2b4197774b6a9- 1no trustfalse
- 2not meeting expectationsfalse
- 3people not spending time with one anotherfalse
- 4All of the abovetrue
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उत्तर : 4. "All of the above"
व्याख्या :
Answer: D) All of the above Explanation: Any of the above given options can be a reason for the damage of the relationship of a couple or a two families or two friends etc... Without trust relationship cannot be maintained, people not spending time with one another or without meeting the expectations of the opponents can also damage the relationship.
प्र: Which statement is NOT true about polymers? 2040 05b5cc696e4d2b4197774c541
5b5cc696e4d2b4197774c541- 1Polymers are large molecules composed of small monomeric unitsfalse
- 2Polymes are macromoleculesfalse
- 3Polymers are complex molecules composed of random sequences of atomstrue
- 4All the abovefalse
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उत्तर : 3. "Polymers are complex molecules composed of random sequences of atoms"
व्याख्या :
Answer: C) Polymers are complex molecules composed of random sequences of atoms Explanation: Polymers are complex molecules composed of random sequences of atoms is the only statement which is not true regarding polymers.
प्र: The average age of a couple is 24 years when they were married five years ago but now the average age of the husband, wife and child is 20 years(the child was born during the interval). What is the present age of the child ? 2040 05b5cc6d6e4d2b4197774e665
5b5cc6d6e4d2b4197774e665- 12 yrstrue
- 24 yrsfalse
- 33 yrsfalse
- 45 yrsfalse
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उत्तर : 1. "2 yrs"
व्याख्या :
Answer: A) 2 yrs Explanation: 29 x 2 = 5820 x 3 = 60 ----------- 2 years Therefore, the age of child is 2 years.
प्र: Calculate the number of bricks, each measuring 25 cm x 15 cm x 8 cm required to construct a wall of dimensions 10 m x 4 cm x 6 m when 10% of its volume is occupied by mortar ? 2039 05b5cc6d8e4d2b4197774e76e
5b5cc6d8e4d2b4197774e76e- 1720true
- 2600false
- 3660false
- 46000false
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उत्तर : 1. "720"
व्याख्या :
Answer: A) 720 Explanation: Let the number of bricks be 'N' 10 x 4/100 x 6 x 90/100 = 25/100 x 15/100 x 8/100 x N 10 x 4 x 6 x 90 = 15 x 2 x N => N = 720.