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प्र: 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 0

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    87%
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  • 2
    98%
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  • 3
    138%
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  • 4
    126%
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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 0

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    Ammeter
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    Pyranometer
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    Dynamometer
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  • 4
    Anemometer
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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 0

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    Thursday
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  • 2
    Friday
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  • 3
    Tuesday
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  • 4
    Monday
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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 0

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    24%
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  • 2
    29%
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  • 3
    34%
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  • 4
    25%
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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 0

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    The peptide bonds linking amino acids differ from protein to protein
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    Each protein contains its own unique sequence of sugar molecules
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    The number of nucleotides found in each protein varies from molecule to molecule
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  • 4
    The sequence of amino acids in the polypeptide chain differs from protein to protein
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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 0

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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 0

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    Hangar
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  • 2
    Port
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  • 3
    Harbour
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  • 4
    Depot
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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 0

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    45/7 %
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  • 2
    50/9 %
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  • 3
    51/7 %
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  • 4
    47/ 9 %
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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 %.

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