IIT JEE प्रश्न और उत्तर का अभ्यास करें
8प्र: The first 8 alphabets are written down at random. what is the probability that the letters b,c,d,e always come together ? 2291 05b5cc6d3e4d2b4197774e4d7
5b5cc6d3e4d2b4197774e4d7- 11/7false
- 28!false
- 37!false
- 41/14true
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उत्तर : 4. "1/14"
व्याख्या :
Answer: D) 1/14 Explanation: The 8 letters can be written in 8! ways.n(S) = 8!Let E be the event that the letters b,c,d,e always come together when the first 8 alphabets are written down.Now the letters a, (bcde), f, g and h can be arranged in 5! ways.The letters b,c,d and e can be arranged themselves in 4! ways.n(E) = 5! x 4!Now, the required P(E) = n(E)/n(S) = 5! x 4!/8! = 1/14Hence the answer is 1/14.
प्र: What sugar is found in RNA? 2290 05b5cc6a7e4d2b4197774ce31
5b5cc6a7e4d2b4197774ce31- 1Deoxyribosefalse
- 2Ribosetrue
- 3Pentosefalse
- 4Sucrosefalse
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उत्तर : 2. "Ribose"
व्याख्या :
Answer: B) Ribose Explanation: RNA - ribonucleic acid is a type of nucleic acid. The sugar contained in it is called Ribose.
प्र: Tractor : Trailer :: Horse : ? 2289 05b5cc69de4d2b4197774c947
5b5cc69de4d2b4197774c947- 1Saddlefalse
- 2Enginefalse
- 3Carttrue
- 4Stablefalse
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उत्तर : 3. "Cart"
व्याख्या :
Answer: C) Cart Explanation: Here the given words are related in such a way that, Trailer is pulled by Tractor and similarly, Cart is pulled by Horse. Hence, Tractor : Trailer :: Horse : Cart.
प्र: If (2a + 3b)/(5a - 3b) = 23/5 , then the value of ba is ? 2289 05b5cc761e4d2b4197774fd39
5b5cc761e4d2b4197774fd39- 15false
- 24false
- 320true
- 428false
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उत्तर : 3. "20"
व्याख्या :
Answer: C) 20 Explanation: Given (2a + 3b)/(5a - 3b) = 23/5 => 10a + 15b = 115a - 69b=> 105a = 84b => 5a = 4b a/b = 4/5 => a=4 & b=5=> bxa = 5x4 = 20.
प्र: Who translated Mahabharata into Persian? 2289 05b5cc658e4d2b4197774bdd3
5b5cc658e4d2b4197774bdd3- 1Jahangirfalse
- 2Aurangzebfalse
- 3Akbartrue
- 4Shahjahanfalse
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उत्तर : 3. "Akbar"
व्याख्या :
Answer: C) Akbar Explanation: The Mahabharata was translated into Persian at Akbar’s orders, by Faizi and 'Abd al-Qadir Bada' uni (c. 1540 – 1615) and named Razmnameh.
प्र: Which word in the dictionary is spelled incorrectly? 2288 05b5cc63de4d2b4197774bb19
5b5cc63de4d2b4197774bb19- उत्तर देखेंउत्तर छिपाएं
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उत्तर :
व्याख्या :
Incorrectly is the only word which is spelled incorrectly in the dictionary.
प्र: The Peacock Throne was a famous jeweled throne that was the seat of the ________ emperors of India. 2288 05b5cc6b7e4d2b4197774d61a
5b5cc6b7e4d2b4197774d61a- 1Mughaltrue
- 2Mauryafalse
- 3Guptafalse
- 4Marathafalse
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उत्तर : 1. "Mughal"
व्याख्या :
Answer: A) Mughal Explanation: The Peacock Throne was a famous jeweled throne that was the seat of the Mughal emperors of India. It was commissioned in the early 17th century by emperor Shah Jahan and was located in the Red Fort of Delhi.
प्र: Which of these is unique to flowering plants? 2287 05b5cc67be4d2b4197774c1d6
5b5cc67be4d2b4197774c1d6- 1double fertilizationtrue
- 2an embryo surrounded by nutritive tissuefalse
- 3haploid gametophytesfalse
- 4pollen productionfalse
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उत्तर : 1. "double fertilization"
व्याख्या :
Answer: A) double fertilization Explanation: In flowering plants one sperm nucleus fertilizes the egg and the other sperm nucleus fuses with two other nuclei found within the ovule, thus forming triploid endosperm. Hence, double fertilization is unique to flowering plants.

