IIT JEE Practice Question and Answer
8Q: Arun is a cashew merchant in Telangana. He has cashews in sealed wooden boxes of 10kg each. The price of the cashew increases by Rs.20 per kg for every year, but at the same time, 10% of the cashews are eaten by rodents every year. If the price of a 1 kg of fresh cashew is Rs.120, what is the change in his profits if he sells a sealed box after one year of storage, rather than selling it fresh ? (In Rs.) 2105 05b5cc728e4d2b4197774f719
5b5cc728e4d2b4197774f719- 1Rs. 60true
- 2Rs. 54false
- 3Rs. 80false
- 4Rs. 75false
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Answer : 1. "Rs. 60"
Explanation :
Answer: A) Rs. 60 Explanation: Price of 1kg fresh cashew = Rs.120Therefore, price of 10kg = Rs.120 x 10 = Rs.1200 10% of 10kg which eaten by rodents = 10 x 10/100 = 1kg. So, End of Year he had 10kg - 1kg = 9kg So, he sells that 9kg with Rs.20 per kg profit = 9 x 140 = 1260. He buy 10kg wooden box with cashew for Rs.1200 and sell that for Rs. 1260 So, profit = 1260 - 1200 = Rs.60 more money he get.
Q: Population of a colony of mosquitoes is increasing by 20% per day. If the population on Monday was 3000, on which day of that week the population would be 5184 ? 2105 05b5cc73ae4d2b4197774f8f1
5b5cc73ae4d2b4197774f8f1- 1Thursdaytrue
- 2Fridayfalse
- 3Tuesdayfalse
- 4Mondayfalse
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Answer : 1. "Thursday"
Explanation :
Answer: A) Thursday Explanation: Given monday population = 3000Per day 20% increase in population. Tuesday population = 3000 + 3000x20/100 = 3000 + 600 = 3600 Wednesday population =3600 + 3600x20/100 = 3600 + 720 = 4320 Thursday population = 4320 + 4320x20/100 = 4320 + 864 = 5184 So that day is Thursday.
Q: 5 C in an OF? 2104 05b5cc6aee4d2b4197774d18d
5b5cc6aee4d2b4197774d18d- 15 Cards in an Old Fanfalse
- 25 Circles in an Olympic Flagtrue
- 35 Colors in an Old Footballfalse
- 45 Colors in an Old Flagfalse
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Answer : 2. "5 Circles in an Olympic Flag"
Explanation :
Answer: B) 5 Circles in an Olympic Flag Explanation: 5 C in an OF denotes 5 Circles in an Olympic Flag. These are riddles of type 12 S of the Z 52 W in a Y.
Q: Which type of simple sugar is found primarily in fruit? 2104 05b5cc699e4d2b4197774c696
5b5cc699e4d2b4197774c696- 1Sucrosefalse
- 2Fructosetrue
- 3Maltosefalse
- 4Lactosefalse
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Answer : 2. "Fructose"
Explanation :
Answer: B) Fructose Explanation: The main simple sugar found in fruit is Fructose. Glucose is found naturally occurring in fruits and other plants. But fructose is sweeter than glucose and can give you more energy. That's why a piece of fruit in the morning will give you more energy than a cup of coffee! Fructose is what gives most fruits that sweet flavor and in combination with the acids present in certain fruits can give a pleasantly tangy flavor.
Q: Ravi and Ramu are partners in a business.Ravi contributes 1/6 of the capital for 16 months and Ramu received 2/3 of the profit. For how long Ramu's money was used ? 2102 05b5cc71ee4d2b4197774f590
5b5cc71ee4d2b4197774f590- 111 monthsfalse
- 210 monthsfalse
- 39 monthsfalse
- 48 monthstrue
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Answer : 4. "8 months"
Explanation :
Answer: D) 8 months Explanation: Let the total Profit be Z.Ramu's profit share is 2/3 of profit (i.e 2Z/3)Ravi's profit is (Z-2Z/3) =Z/3Hence the profit ratio is , Ravi : Ramu = Z/3 : 2Z/3 = 1:2 Let total Capital be Rs.X and Ramu has contributed for Y months.Since Ramu's profit share is 2/3, his invest share will be 2/3 in capital. Ravi's invest for 16 months / Ramu's invest for Y months = Ravi's profit share / Ramu's profit sharei.e. (X/6 x 16) / (2X/3 x Y) = 1/2 Solving the above equation, we get Y = 8.So Ramu's money has been used for 8 months.
Q: Can character data be stored in computer memory? 2102 15b5cc6a5e4d2b4197774ccdb
5b5cc6a5e4d2b4197774ccdb- 1Yes---a primitive data type is used to store characterstrue
- 2No---computer memory can only store patternsfalse
- 3Yes---characters are stored in special memoryfalse
- 4No---computers can only store numbersfalse
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Answer : 1. "Yes---a primitive data type is used to store characters"
Explanation :
Answer: A) Yes---a primitive data type is used to store characters Explanation:
Q: Proteins differ from one another because 2101 05b5cc670e4d2b4197774c057
5b5cc670e4d2b4197774c057- 1The peptide bonds linking amino acids differ from protein to proteinfalse
- 2Each protein contains its own unique sequence of sugar moleculesfalse
- 3The number of nucleotides found in each protein varies from molecule to moleculefalse
- 4The sequence of amino acids in the polypeptide chain differs from protein to proteintrue
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Answer : 4. "The sequence of amino acids in the polypeptide chain differs from protein to protein"
Explanation :
Answer: D) The sequence of amino acids in the polypeptide chain differs from protein to protein Explanation:
Q: Grand Central Terminal Park Avenue is the world's 2100 05b5cc678e4d2b4197774c18d
5b5cc678e4d2b4197774c18d- 1smallest railway stationfalse
- 2largest railway stationtrue
- 3longest railway stationfalse
- 4None of abovefalse
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Answer : 2. "largest railway station"
Explanation :
Answer: B) largest railway station Explanation: Grand Central Terminal also referred to as Grand Central Station or Grand Central is the world’s largest railway station in terms of platforms in New York City with 44 platforms covering 48 acres.