IIT JEE प्रश्न और उत्तर का अभ्यास करें
8प्र: What is something you will never see again? 1263 05b5cc62ae4d2b4197774b8eb
5b5cc62ae4d2b4197774b8eb- उत्तर देखेंउत्तर छिपाएं
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उत्तर :
व्याख्या :
Yesterday, is what we will never see again as the time we come across will never be back.
प्र: Which state has ranked top among the states in the country in terms of manufacturing excellence in 2017 ? 1262 05b5cc6c7e4d2b4197774de7d
5b5cc6c7e4d2b4197774de7d- 1Telanganafalse
- 2Tamilnadufalse
- 3Haryanafalse
- 4Karnatakatrue
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उत्तर : 4. "Karnataka"
व्याख्या :
Answer: D) Karnataka Explanation: Southern state Karnataka has been ranked top among the states in the country in terms of manufacturing excellence, according to a study by apex industry body Assocham in 2017.
प्र: As per the decision of the GST Council, e-Way Bill system has been rolled out from 1262 05b5cc669e4d2b4197774bf3b
5b5cc669e4d2b4197774bf3b- 11st March 2018false
- 21st April 2018true
- 31st May 2018false
- 41st January 2018false
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उत्तर : 2. "1st April 2018"
व्याख्या :
Answer: B) 1st April 2018 Explanation: As per the decision of the GST Council, e-Way Bill system has been rolled out from 1st of April this year (2018).
प्र: What is the difference between the number of uneducated females in city P and that of uneducated males in city S ? 1261 05b5cc6c8e4d2b4197774df37
5b5cc6c8e4d2b4197774df37- 19 lakhstrue
- 26 lakhsfalse
- 33 lakhsfalse
- 42 lakhsfalse
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उत्तर : 1. "9 lakhs"
व्याख्या :
Answer: A) 9 lakhs Explanation: Educated females in city P = 25 lakhs Uneducated females in city P = 30 - 25 = 5 lakhs Educated males city S = 21 lakhs Educated males in city S = 35 - 21= 14 lakhs Required difference = 14 - 5 = 9 lakhs
प्र: Which of the following is a polymer? 1261 05b5cc695e4d2b4197774c51b
5b5cc695e4d2b4197774c51b- 1Glycerolfalse
- 2Amino acidfalse
- 3Nucleic acidtrue
- 4Fatty acidfalse
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उत्तर : 3. "Nucleic acid"
व्याख्या :
Answer: C) Nucleic acid Explanation: Nucleic acid is a polymer among the given options.
प्र: One card is drawn from a pack of 52 cards, each of the 52 cards being equally likely to be drawn find the probability the card drawn is red. 1259 05b5cc6c8e4d2b4197774df1e
5b5cc6c8e4d2b4197774df1e- 12/3false
- 21/2true
- 31/52false
- 413/51false
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उत्तर : 2. "1/2"
व्याख्या :
Answer: B) 1/2 Explanation: We know that: When one card is drawn from a pack of 52 cards The numbers of possible outcomes n(s) = 52 We know that there are 26 red cards in the pack of 52 cards⇒ The numbers of favorable outcomes n(E) = 26 Probability of occurrence of an event: P(E)=Number of favorable outcomes/Numeber of possible outcomes=n(E)/n(S) ∴ required probability = 26/52 = 1/2.
प्र: Train K crosses a stationary Train L in 50 seconds and a pole in 20 seconds with the same speed. The length of the Train K is 240 meters. What is the length of stationary Train L ? 1259 05b5cc72ce4d2b4197774f75f
5b5cc72ce4d2b4197774f75f- 160 mtsfalse
- 2120 mtsfalse
- 3240 mtsfalse
- 4360 mtstrue
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उत्तर : 4. "360 mts"
व्याख्या :
Answer: D) 360 mts Explanation: Speed of the Train K is given by s = d/t = 240/20 = 12 m/sDistance covered by Train K in 50 seconds = 12 x 50 = 600 mts.But it crosses Train L in 50 seconds Therefore, the length of the Train L is = 600 - 240 = 360 mts.
प्र: In the following number series, one of the numbers is wrong. Find it out? 77, 79, 76, 81, 75, 85 1259 05b5cc6bee4d2b4197774d965
5b5cc6bee4d2b4197774d965- 179false
- 281false
- 375true
- 485false
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उत्तर : 3. "75"
व्याख्या :
Answer: C) 75 Explanation: Here in the given series, it follows a pattern that 77 + 2 = 79 79 - 3 = 76 76 + 5 = 81 81 - 7 = 74 74 + 11 = 85 Consecutive adding and subtracting of prime numbers. So the wrong number in the given series is 75.

