CAT प्रश्न और उत्तर का अभ्यास करें
8प्र: One type of liquid contains 25 % of benzene, the other contains 30% of benzene. A can is filled with 6 parts of the first liquid and 4 parts of the second liquid. Find the percentage of benzene in the new mixture. 2533 05b5cc75ee4d2b4197774fcc0
5b5cc75ee4d2b4197774fcc0- 127 %true
- 226 %false
- 329 %false
- 421 %false
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उत्तर : 1. "27 %"
व्याख्या :
Answer: A) 27 % Explanation: Let the percentage of benzene = X(30 - X)/(X- 25) = 6/4 = 3/2 => 5X = 135 X = 27 So, required percentage of benzene = 27 %
प्र: Plants that grow in Saline Water are called 2533 15b5cc6b3e4d2b4197774d477
5b5cc6b3e4d2b4197774d477- 1Sciophytesfalse
- 2Bryophytesfalse
- 3Halophytestrue
- 4Hydrophytesfalse
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उत्तर : 3. "Halophytes"
व्याख्या :
Answer: C) Halophytes Explanation: Plants that grow in Saline Water are called Halophytes.
प्र: P and Q can do a work in 4 hours and 12 hours respectively. P starts the work at 9am and they work alternately for one hour each. When will the work be completed ? 2532 05b5cc774e4d2b41977750039
5b5cc774e4d2b41977750039- 13 amfalse
- 212 pmfalse
- 31 pmfalse
- 43 pmtrue
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उत्तर : 4. "3 pm"
व्याख्या :
Answer: D) 3 pm Explanation: Work done by P and Q in the first two hours, working alternately = First hour P + Second hour Q ⇒14+112=13 work is completed in 2 hours Then, the total time required to complete the work by P and Q working alternately=2 x 3= 6hours Thus, work will be completed at 3pm.
प्र: Which of these is NOT a lipid? 2530 05b5cc699e4d2b4197774c6be
5b5cc699e4d2b4197774c6be- 1Waxfalse
- 2Cholesterolfalse
- 3RNAtrue
- 4Phospholipidfalse
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उत्तर : 3. "RNA"
व्याख्या :
Answer: C) RNA Explanation: RNA is not a lipid among the given options. A lipid is a substance of biological origin that is soluble in nonpolar solvents. It comprises a group of naturally occurring molecules that include fats, waxes, sterols, fat-soluble vitamins (such as vitamins A, D, E, and K), monoglycerides, diglycerides, triglycerides, and phospholipids.
प्र: A plane is an undefined term because it 2530 05b5cc670e4d2b4197774c034
5b5cc670e4d2b4197774c034- 1is a flat surface that extends indefinitely in all directionsfalse
- 2is where other geometric shapes can be constructedfalse
- 3is described generally, not using a formal definitiontrue
- 4can be named using three noncollinear pointsfalse
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उत्तर : 3. "is described generally, not using a formal definition"
व्याख्या :
Answer: C) is described generally, not using a formal definition Explanation: In geometry, we can define plane as a flat surface with no thickness. The surface extends with no ends. A plane does not have any edges even if we draw it on paper with edges, it does't mean it has edges. Hence, A plane is an undefined term because it is described generally, not using a formal definition.
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: 2530 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: 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 ? 2529 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: Detect an error part labelled (1), (2), (3) & (4) in the following question. whole northern states in(1)/india are reeling under the(2)/devastating(3)/of the drought(4) 2529 05b5cc6c4e4d2b4197774dce6
5b5cc6c4e4d2b4197774dce6- 11true
- 22false
- 33false
- 44false
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उत्तर : 1. "1"
व्याख्या :
Answer: A) 1 Explanation: Error is in the first part of the sentence. 'Whole' is used with singular nouns.The correct sentence is - 'All Northern states in India are reeling under the devastating of the drought.