IIT JEE प्रश्न और उत्तर का अभ्यास करें
8प्र: In a certain code ARCHIVE is written as DSBGFWJ. How is SYSTEMS is written in that code ? 3194 05b5cc75ee4d2b4197774fcf8
5b5cc75ee4d2b4197774fcf8- 1TZTSTUNfalse
- 2TZTSTNFtrue
- 3TZTUTNFfalse
- 4TZTNTFSfalse
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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
प्र: Which of the following is not purely output device? 3194 15b5cc688e4d2b4197774c32c
5b5cc688e4d2b4197774c32c- 1Printerfalse
- 2Speakerfalse
- 3Plotterfalse
- 4Screentrue
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उत्तर : 4. "Screen"
व्याख्या :
Answer: D) Screen Explanation: A touch screen is the only device which works as both an input and an output device among the given options. You view the options available to you on the screen (output) and you then use your finger to touch the option that you have chosen (input). Hence, Screen is not purely output device.
प्र: Which is the most accurate statement about trade? 3184 05b5cc69be4d2b4197774c80b
5b5cc69be4d2b4197774c80b- 1Trade makes some nations better off and others worse offfalse
- 2Trading for a good can make a nation better off only if the nation cannot produce that good itselffalse
- 3Trade helps rich nations and hurts poor nationsfalse
- 4Trade can make every nation better offtrue
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उत्तर : 4. "Trade can make every nation better off"
व्याख्या :
Answer: D) Trade can make every nation better off Explanation:
प्र: आरएनए में कौन सा आधार पाया जाता है लेकिन डीएनए में नहीं? 3184 05b5cc60ae4d2b4197774b56d
5b5cc60ae4d2b4197774b56d- 1यूरेसिलtrue
- 2साइटोसिनfalse
- 3एडीनाइनfalse
- 4गुआनिनfalse
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उत्तर : 1. "यूरेसिल"
व्याख्या :
Answer: A) यूरेसिल व्याख्या: यूरेसिल डीएनए में नहीं बल्कि आरएनए में पाया जाता है।
प्र: Find the next number in the given number series? 50, 51, 47, 56, 40, ? 3182 05b5cc669e4d2b4197774bf52
5b5cc669e4d2b4197774bf52- 158false
- 265true
- 376false
- 481false
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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: Tennis rackets and ballpoint pens are 3180 05b5cc60ae4d2b4197774b5ab
5b5cc60ae4d2b4197774b5ab- 1complementary goodsfalse
- 2independent goodstrue
- 3inferior goodsfalse
- 4substitute goodsfalse
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उत्तर : 2. "independent goods"
व्याख्या :
Answer: B) independent goods Explanation: Tennis rackets and ballpoint pens are two independent goods. Since, one doesn't depend on the other.
प्र: On a ruler's tombstone, it is said that one sixth of his life was spent in childhood and one twelfth as a teenager. One seventh of his life passed between the time he became an adult and the time he married; five years later, his son was born. Alas, the son died four years before he did. He lived to be twice as old as his son did. How old did the ruler live to be ? 3172 05b5cc741e4d2b4197774f981
5b5cc741e4d2b4197774f981- 184 yearstrue
- 272 yearsfalse
- 382 yearsfalse
- 464 yearsfalse
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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: The ratio of male and female in a city is 7 : 8 respectively and percentage of children among male and female is 25 and 20 respectively. If number of adult females is 156800, what is the total population of the city? 3156 05b5cc6bee4d2b4197774d9c9
5b5cc6bee4d2b4197774d9c9- 14,12,480false
- 23,67,500true
- 35,44,700false
- 42,98,948false
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उत्तर : 2. "3,67,500"
व्याख्या :
Answer: B) 3,67,500 Explanation: Let the total population be 'p' Given ratio of male and female in a city is 7 : 8 In that percentage of children among male and female is 25% and 20% => Adults male and female % = 75% & 80% But given adult females is = 156800 => 80%(8p/15) = 156800 => 80 x 8p/15 x 100 = 156800 => p = 156800 x 15 x 100/80 x 8 => p = 367500 Therefore, the total population of the city = p = 367500