GATE प्रश्न और उत्तर का अभ्यास करें
8प्र: Last year vivek saved 10% of his annual earnings, this year he earned 5% more than last year and he saved 12% of his annual earnings. The amount saved this year was what percentage of the amount saved last year ? 2287 05b5cc723e4d2b4197774f6c3
5b5cc723e4d2b4197774f6c3- 187%false
- 298%false
- 3138%false
- 4126%true
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उत्तर : 4. "126%"
व्याख्या :
Answer: D) 126% Explanation: Suppose total earnings = Rs. 1000010% saving = 10000 x (10/100) = Rs. 1000This year 5% more income than prev year = Rs. 1050012% saving = 10500 x (12/100) = Rs. 1260Percentage of amount saved = (1260/1000) x 100 = 126%
प्र: Instruments for measuring Solar Radiation? 2287 05b5cc68ee4d2b4197774c3f4
5b5cc68ee4d2b4197774c3f4- 1Ammeterfalse
- 2Pyranometertrue
- 3Dynamometerfalse
- 4Anemometerfalse
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उत्तर : 2. "Pyranometer"
व्याख्या :
Answer: B) Pyranometer Explanation: Solar radiation instruments may be produced to measure different types of solar energy. When sunlight encounters the Earth's atmosphere, some of it is absorbed or scattered by water vapor, aerosols, clouds, and other air molecules. The radiation which penetrates to the Earth's surface is termed direct solar radiation. A thermopile pyranometer is a type of actinometer used for measuring solar radiation on a planar surface and it is designed to measure the solar radiation flux density (W/m2) from the hemisphere above within a wavelength range 0.3 μm to 3 μm.
प्र: 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 ? 2285 05b5cc73ae4d2b4197774f8f1
5b5cc73ae4d2b4197774f8f1- 1Thursdaytrue
- 2Fridayfalse
- 3Tuesdayfalse
- 4Mondayfalse
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उत्तर : 1. "Thursday"
व्याख्या :
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.
प्र: If the given two numbers are respectively 7% and 28% of a third number, then what percentage is the first of the second ? 2283 05b5cc75ce4d2b4197774fc48
5b5cc75ce4d2b4197774fc48- 124%false
- 229%false
- 334%false
- 425%true
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उत्तर : 4. "25%"
व्याख्या :
Answer: D) 25% Explanation: Here, k = 7 and l = 28Therefore, first number = klx100 % of second number = 7/28 x 100% of second number = 25% of second number.
प्र: Proteins differ from one another because 2278 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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उत्तर : 4. "The sequence of amino acids in the polypeptide chain differs from protein to protein"
व्याख्या :
Answer: D) The sequence of amino acids in the polypeptide chain differs from protein to protein Explanation:
प्र: I have an eye but cannot see? 2277 05b5cc66de4d2b4197774bfe3
5b5cc66de4d2b4197774bfe3- उत्तर देखेंउत्तर छिपाएं
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उत्तर :
व्याख्या :
Its a Needle. Needle has an eye but can't see.
प्र: Car is to garage as aeroplane is to 2277 05b5cc65ee4d2b4197774be20
5b5cc65ee4d2b4197774be20- 1Hangartrue
- 2Portfalse
- 3Harbourfalse
- 4Depotfalse
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उत्तर : 1. "Hangar"
व्याख्या :
Answer: A) Hangar Explanation: We park car temporarily in garrage, similarly, aeroplane is temporarily parked in hangar.
प्र: A sum of money becomes 7/6 of itself in 3 years at a certain rate of simple interest. The rate per annum is ? 2276 05b5cc6dfe4d2b4197774eacb
5b5cc6dfe4d2b4197774eacb- 145/7 %false
- 250/9 %true
- 351/7 %false
- 447/ 9 %false
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उत्तर : 2. "50/9 %"
व्याख्या :
Answer: B) 50/9 % Explanation: Let sum = S. Then, amount = 7S/6 S.I. = 7S/6 - S = S/6; Time = 3 years. Rate = (100 x S) / (S x 6 x 3) = 5 5/9 = 50/9 %.

