IIT JEE प्रश्न और उत्तर का अभ्यास करें

प्र: Happiness is to 517768399 as senipah is to 3826 0

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    9836715
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    9386615
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    9386715
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  • 4
    9386517
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उत्तर : 3. "9386715"
व्याख्या :

Answer: C) 9386715 Explanation: If each consecutive letter in "happiness" relates to the consecutive numbers in 517768399, then H=5, A=1, P=7, I=6, N=8, E=3 and S=9. Using the numbers that relate to the letters in 'senipah', you will arrive at SENIPAH = 9386715.   Hence, Happiness is to 517768399 as senipah is to 9386715.

प्र: A man spend Rs. 810 in buying trouser at Rs. 70 each and shirt at Rs. 30 each. What will be the ratio of trouser and shirt when the maximum number of trouser is purchased ? 3822 0

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    1:3
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    2:1
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    3:2
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    2:3
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उत्तर : 3. "3:2"
व्याख्या :

Answer: C) 3:2 Explanation: Let us assume S as number of shirts and T as number of trousersGiven that each trouser cost = Rs.70 and that of shirt = Rs.30Therefore, 70 T + 30 S = 810=> 7T + 3S = 81......(1)T = ( 81 - 3S )/7 We need to find the least value of S which will make (81 - 3S) divisible by 7 to get maximum value of TSimplifying by taking 3 as common factor i.e, 3(27-S) / 7In the above equation least value of S as 6 so that 27- 3S becomes divisible by 7 Hence T = (81-3xS)/7 = (81-3x6)/7 = 63/7 = 9 Hence for S, put T in eq(1), we getS = 81-7(9)/3 = 81-63 / 3 = 18/3 = 6.The ratio of T:S = 9:6 = 3:2.

प्र: If NAMO = 172 and OM = 56  then, SHIVAY = ? 3820 0

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    606
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    415
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    504
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    404
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उत्तर : 3. "504"
व्याख्या :

Answer: C) 504 Explanation: (COUNTING OF LETTERS) NAMO = 14 + 1 + 13 + 15 = 43 x 4 = 172,  OM = 15 + 13 = 28 x 2 = 56, SHIVAY = 19 + 8 + 9 + 22 + 1 + 25 = 84 x 6 = 504

प्र: Which statement best describes an O3 molecule? 3812 0

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    The double bond in ozone switches back and forth between the two outer oxygen atoms
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    An ozone molecule contains one single bond and one double bond
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    Each atom in ozone is connected to another atom by 1.5 bonds.
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    None
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उत्तर : 2. "An ozone molecule contains one single bond and one double bond"
व्याख्या :

Answer: B) An ozone molecule contains one single bond and one double bond Explanation: Ozone molecule has one single bond and one double bond.

प्र: In a regular week, there are 5 working days and for each day, the working hours are 8. A man gets Rs. 2.40 per hour for regular work and Rs. 3.20 per hours for overtime. If he earns Rs. 432 in 4 weeks, then how many hours does he work for ? 3811 0

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    145
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    165
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    175
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    135
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उत्तर : 3. "175"
व्याख्या :

Answer: C) 175 Explanation: Given that,  working days = 5  working hours = 8  A man get rupess per hour is Rs.2.40  So in one day the man get total rupees is 2.40 x 8 = 19.2  So in 5 days week the man get total rupees is 19.2 x 5 = 96  So in 4 week the man get total rupees is 96 x 4 = 384  So the man worked for = 160hours in 4 weeks    But given that the man earned Rs.432    Hence remaning money is (432-384 = 48)which is earn by doing overtime work   Overtime hours  = 48/3.20 = 15 So total worked hours is = 15 + 160 = 175.

प्र: In a race of 1000 m, A can beat by 100 m, in a race of 800m, B can beat C by 100m. By how many meters will A beat C in a race of 600 m ? 3810 0

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    127.5 m
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    254 m
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    184 m
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    212 m
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उत्तर : 1. "127.5 m"
व्याख्या :

Answer: A) 127.5 m Explanation: When A runs 1000 m, B runs 900 m and when B runs 800 m, C runs 700 m. When B runs 900 m, distance that C runs = (900 x 700)/800 = 6300/8 = 787.5 m. In a race of 1000 m, A beats C by (1000 - 787.5) = 212.5 m to C. In a race of 600 m, the number of meters by which A beats C = (600 x 212.5)/1000 = 127.5 m.

प्र: Find the odd one out of the following options. 3806 0

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    Sapphire
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    Ruby
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    Topaz
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    Granite
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उत्तर : 4. "Granite"
व्याख्या :

Answer: D) Granite Explanation: Except Granite all other options belong to the group of precious stones.

प्र: Which statement about greek sculpture is false? 3792 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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    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.

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