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प्र: Amith can row a boat d km upstream and the same distance downstream in 5 hours 15 minutes. Also, he can row the boat 2d km upstream in 7 hours. How long will it take to row the same distance 2d km downstream for Amith ? 2964 0

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    4 hrs 10 min
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  • 2
    3 hrs 15 min
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  • 3
    3 hrs 30 min
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  • 4
    4 hrs 1 min
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उत्तर : 3. "3 hrs 30 min"
व्याख्या :

Answer: C) 3 hrs 30 min Explanation: Let the speed of boat and stream be x and y kmph respectively. According to question d/x+y + d/x-y = 5h 15m or 21/4 hrs ......(i) and 2d/x-y = 7...... (ii) From eq. (i) and (ii) 2d/x+y = 7/2 Hence, Amith will take to row 2d km distance downstream in 7/2 hrs = 3.5 hrs = 3 hrs 30 min.

प्र: Chipko movement was basically against 2963 0

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    Cultural pollution
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    Deforestation
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    Water pollution
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    Noise pollution
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उत्तर : 2. "Deforestation"
व्याख्या :

Answer: B) Deforestation Explanation: The Chipko movement or Chipko Andolan refers to a forest conservation movement or deforestation. In modern india, it began in 1973 in the state of Uttar Pradesh (now Uttarakhand). Sunderlal Bahuguna and 84 villagers risked their lives to protect the forest trees from being felled on the order of the maharaja (king) and went on to become a rallying point for many future environmental movements all over the world it created a precedent for starting of nonviolent protest in India, and its success meant that the world immediately took notice of this non violent movement, which was to inspire in time many such eco-groups by helping to slow down the rapid deforestation, expose vested interests, increase ecological awareness, and demonstrate the viability of people power. Above all, it stirred up the existing civil society in India, which began to address the issues of tribal and marginalized people.   Chipko type movement dates back to 1730 AD when in a khejarli village of Rajasthan, 363 people sacrificed their lives to save khejari trees.

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उत्तर : 1. "84 years"
व्याख्या :

Answer: A) 84 years Explanation: Let the age of ruler is x so that of son = x/2 (given)Now according to the given condition (x/6) + (x/12) + (x/7) + 5 + (x/2) + 4 = x=> x = 84

प्र: Find the next number in the given number series? 50, 51, 47, 56, 40, ? 2955 0

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    58
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    65
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  • 3
    76
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  • 4
    81
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उत्तर : 2. "65"
व्याख्या :

Answer: B) 65 Explanation: The given number series is 50, 51, 47, 56, 40, ?   5050 + 12 = 5151 - 22 = 4747 + 32 = 5656 - 42 = 4040 + 52 = 65   Hence, the next number in the given number series is 65.

प्र: Which statement about greek sculpture is false? 2950 0

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    The Greeks admired the strength and precision of athletes and wanted to portray athletic figures.
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    The three main principles of Greek aesthetics are proportion, movement, and rhythm.
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  • 3
    Greeks sculptures are typically stiffly posed, highly styled figures.
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    All the above
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उत्तर : 3. "Greeks sculptures are typically stiffly posed, highly styled figures."
व्याख्या :

Answer: C) Greeks sculptures are typically stiffly posed, highly styled figures. Explanation: Greek Sculpture are typically stiff, posed & highly styled figures is the false answer.

प्र: What is 90 days from today?   Hints : Today is 20th January 2017, Sunday 2937 0

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    18th April, Friday
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    20th April, Saturday
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    21th April, Sunday
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  • 4
    19th April, Saturday
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उत्तर : 2. "20th April, Saturday"
व्याख्या :

Answer: B) 20th April, Saturday Explanation: Given Today is 20th January 2017, Sunday In january, we have 31 days February - 28 days (Non leap year) March - 31 days April - 30 days => Remaining days => 31 - 20 = 11 in Jan + 28 in Feb + 31 in Mar = 11 + 28 + 31 = 70 days More 20 days to complete 90 days => upto 20th April   Therefore, after 90 days from today i.e, 20th Jan 2017 is 20th Apr 2017.   Now, the day of the week will be  90/7 => Remainder '6' As the day starts with '0' on sunday  6 => Saturday.   Required day is 20th April, Saturday.

प्र: A periscope works by the principle of 2936 0

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    Total internal reflection
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    Refraction
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    Diffraction
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    Reflection & Refraction
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उत्तर : 1. "Total internal reflection"
व्याख्या :

Answer: A) Total internal reflection Explanation: A periscope is an optical instrument that uses a system of prisms, lenses, or mirrors to reflect images through a tube.       Light from a distant object strikes the top mirror and is then reflected at an angle of 90 degrees down the periscope tube. At the bottom of the periscope, the light strikes another mirror and is then reflected into the viewer’s eye.   Hence, A periscope works by the principle of Total internal reflection.

प्र: In a certain code ARCHIVE is written as DSBGFWJ. How is SYSTEMS is written in that code ? 2935 0

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    TZTSTUN
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    TZTSTNF
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  • 3
    TZTUTNF
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    TZTNTFS
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उत्तर : 2. "TZTSTNF"
व्याख्या :

Answer: B) TZTSTNF Explanation: ARC -> CRA ->(+1) DSB    H ->     H ->(-1) GIVE  ->  EVI ->(+1) FWJ  Similarly,  SYS -> SYS ->(+1) TZT    T ->     T ->(-1) SEMS -> SME ->(+1) TNF

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