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नवीनतमलोकप्रियमूल्यांकनपेज देखें 118 of 261कुल सवाल 2086 जॉइन Examsbook

प्र: A man whose speed is 4.5 kmph in still water rows to a certain upstream point and back to the starting point in a river which flows at 1.5 kmph, find his average speed for the total journey ? 2056 0

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    5 kmph
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  • 2
    7 kmph
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  • 3
    3 kmph
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  • 4
    4 kmph
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उत्तर : 4. "4 kmph"
व्याख्या :

Answer: D) 4 kmph Explanation: Speed of Man = 4.5 kmphSpeed of stream = 1.5 kmphSpeed in DownStream = 6 kmphSpeed in UpStream = 3 kmphAverage Speed = (2 x 6 x 3)/9 = 4 kmph.

प्र: Pradeep correctly remembers that his mother's is before twenty third February but after ninteenth February, whereas his brother correctly remembers that their mother's birthday is not on or after twentysecond February. On which day in February is definitely their mother's birthday ? 2055 0

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    20 or 21
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  • 2
    20
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  • 3
    21
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  • 4
    None
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उत्तर : 1. "20 or 21"
व्याख्या :

Answer: A) 20 or 21 Explanation: According to Pradeep : 20,21 or 22...(1)According to his brother : not 22....(2)From (1)&(2), the birthday falls on February 20 or 21.

प्र: Statement: Ministry of Tourism in its one of the reports revealed that due to recent social disturbance in the country, the number of foreign tourists has decreased considerably, which resulted in a financial loss of Rs 100 crore.Courses of action:a. The Government should provide financial support to the tourism sector.b. Foreign tourists should be informed that they visit the country at their risk. 2055 0

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    Only b follows
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  • 2
    Only a follows
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  • 3
    Both a & b follows
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  • 4
    Neither a nor b follows
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उत्तर : 4. "Neither a nor b follows"
व्याख्या :

Answer: D) Neither a nor b follows Explanation: Financial support to the tourism sector is not a permanent solution. Secondly, constant risk for the foreign tourists will never encourage tourism in India. Hence, none of the course action is the right solution in this direction.

प्र: What is the Iupac name for the compound shown below. 2054 0

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    1-Bromo-3-chlorocyclohexene
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  • 2
    2-Bromo-6-chlorocyclohex-1-ene
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  • 3
    6-Bromo-2-chlorocyclohexene
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  • 4
    3-Bromo-1-chlorocyclohex-1-ene
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उत्तर : 4. "3-Bromo-1-chlorocyclohex-1-ene"
व्याख्या :

Answer: D) 3-Bromo-1-chlorocyclohex-1-ene Explanation: In chemical nomenclature, the IUPAC nomenclature of organic chemistry is a systematic method of naming organic chemical compounds as recommended by the International Union of Pure and Applied Chemistry (IUPAC).

प्र: In a party there are male and female members. If 15 female quit then the number of females will become double the number of males. If 45 males quit no. of female becomes five times the number of males. Find the number of females ? 2054 0

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    175
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  • 2
    145
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  • 3
    165
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  • 4
    135
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उत्तर : 1. "175"
व्याख्या :

Answer: A) 175 Explanation: Let the number of males be 'M'Let the number of females be 'F'From the given conditions,(F-15)=2M.....(i)F=5(M-45).....(ii)By solving the equations (1) & (2) we get M = 80 Then substitute M = 80 in (1)F = 2M + 15F = 2 x 80 + 15=> F = 175Therefore, number of males = 80 and females = 175 in the party.

प्र: What important polymer is located in the nucleus? 2052 0

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    Ribosomes
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  • 2
    Chromosomes
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    DNA
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  • 4
    Proteins
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उत्तर : 3. "DNA"
व्याख्या :

Answer: C) DNA Explanation: The most important polymer present in the nucleus is DNA- the master molecule. It is a polymer of Nucleotides.

प्र: A letter lock consists of three rings each marked with six different letters. The number of distinct unsuccessful attempts to open the lock is at the most  ? 2051 0

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    215
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  • 2
    268
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  • 3
    254
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  • 4
    216
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उत्तर : 1. "215"
व्याख्या :

Answer: A) 215 Explanation: Since each ring consists of six different letters, the total number of attempts possible with the three rings is = 6 x 6 x 6 = 216. Of these attempts, one of them is a successful attempt.   Maximum number of unsuccessful attempts = 216 - 1 = 215.

प्र: What profit percent is made by selling an article at a certain price, if by selling at 2/3rd of that price, there would be a loss of 20%   ? 2051 0

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    30 %
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  • 2
    25 %
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  • 3
    15 %
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  • 4
    20 %
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उत्तर : 4. "20 %"
व्याख्या :

Answer: D) 20 % Explanation: SP2 = 2/3 SP1CP = 100SP2 = 802/3 SP1 = 80 SP1 = 120100 --- 20   => 20%

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