IIT JEE प्रश्न और उत्तर का अभ्यास करें
8प्र: Which of the following is NOT true about energy balance? 2502 05b5cc68ee4d2b4197774c3da
5b5cc68ee4d2b4197774c3da- 1Inactive people use more energy so they should consume fewer calories.true
- 2Energy balance is the balance between the amount of calories consumed and the amount used for energy.false
- 3Energy balance is influenced by the amount of exercise one gets and their dietary habits.false
- 4Stored body fat will increase if calorie intake is greater than energy used.false
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उत्तर : 1. "Inactive people use more energy so they should consume fewer calories."
व्याख्या :
Answer: A) Inactive people use more energy so they should consume fewer calories. Explanation: The given statement option A) is False regarding energy balance.It should be "Inactive people use less energy so they should consume fewer calories."
प्र: Which of the following statements is most accurate regarding infection with parvovirus B19? 2501 05b5cc6a8e4d2b4197774ce76
5b5cc6a8e4d2b4197774ce76- 1Parvovirus B19 causes severe anemia because it preferentially infects erythrocyte precursorstrue
- 2Parvovirus B19 can cause hydrops fetalis via transplacental infection of a fetus in a seropositive motherfalse
- 3Parvovirus B19 can be diagnosed by detection of viral RNA using PCR or hybridization assaysfalse
- 4Parvovirus B19 replicates in the host cell nucleus utilizing a virally encoded DNA polymerase to create a double- stranded DNA intermediatefalse
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उत्तर : 1. "Parvovirus B19 causes severe anemia because it preferentially infects erythrocyte precursors"
व्याख्या :
Answer: A) Parvovirus B19 causes severe anemia because it preferentially infects erythrocyte precursors Explanation: Parvovirus B19 causes severe anemia because it preferentially infects erythrocyte precursors. a. Parvovirus B19 binds preferentially to the erythrocyte blood group P antigen on erythroid precursor cells. Answers B, C, D are incorrect: b. after entry the single-stranded viral DNA genome is transported to the cell nucleus where the host DNA polymerase synthesizes the complimentary DNA strand. c. Parvovirus B19 infection can be diagnosed by direct detection of viral DNA not RNA. d. the fetus of a seropositive mother is protected from infection by maternal circulating antibodies.
प्र: The interest on a certain deposit at 4.5% p.a. is Rs. 202.50 in one year. How much will the additional interest in one year be on the same deposit at 5% p.a. ? 2500 05b5cc6dde4d2b4197774ea19
5b5cc6dde4d2b4197774ea19- 1Rs. 22.5true
- 2Rs. 2.5false
- 3Rs. 202false
- 4Rs. 25false
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उत्तर : 1. "Rs. 22.5"
व्याख्या :
Answer: A) Rs. 22.5 Explanation: We know that I = PTR/100=> P = 20250/4.5 = 4500Now, new Interest at 5% = 4500x1x5/100 = 225Now the additional amount = 225 - 202.5 = Rs. 22.5
प्र: A heap of coconuts is divided into groups of 2, 3 and 5 and each time one coconut is left over. The least number of Coconuts in the heap is ? 2499 05b5cc6d8e4d2b4197774e778
5b5cc6d8e4d2b4197774e778- 163false
- 231true
- 316false
- 427false
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उत्तर : 2. "31"
व्याख्या :
Answer: B) 31 Explanation: To get the least number of coconuts :LCM = 30 => 30 + 1 = 31
प्र: Tilak rides on a cycle to a place at speed of 22 kmph and comes back at a speed of 20 kmph. If the time taken by him in the second case is 36 min. more than that of the first case, what is the total distance travelled by him (in km)? 2497 05b5cc6a0e4d2b4197774ca6c
5b5cc6a0e4d2b4197774ca6c- 1132 kmfalse
- 2264 kmtrue
- 3134 kmfalse
- 4236 kmfalse
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उत्तर : 2. "264 km"
व्याख्या :
Answer: B) 264 km Explanation: Let the distance travelled by Tilak in first case or second case = d kms Now, from the given data, d/20 = d/22 + 36 min => d/20 = d/22 + 3/5 hrs => d = 132 km. Hence, the total distance travelled by him = d + d = 132 + 132 = 264 kms.
प्र: A F Z U G L T _ Find the next letter in the above given letter series? 2497 05b5cc64de4d2b4197774bc5c
5b5cc64de4d2b4197774bc5c- 1Kfalse
- 2Mfalse
- 3Otrue
- 4Qfalse
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उत्तर : 3. "O"
व्याख्या :
Answer: C) O Explanation: Given series is A F Z U G L T _ Starts with A A + 5 letters = F go to end of alphabet= Z Z - 5 letters = U from F go one more to G + 5 letters = L from U go one back to U, T - 5 letters = O Second Method :: Change the letters to their corresponding number. A=1 B=2 C=3 ... Z=26 A F Z U G L T _ 1 6 26 21 7 12 20 ? Look at the pattern: the 1st and 3rd numbers = 27, 1+26 the 2nd and 4th numbers = 27, 6+21 the 5th and 7th numbers = 27, so the 6 and 8th would also equal 27. 27 - 12 = 15, so the letter is O.
प्र: What does this symbol mean '&'? 2496 05b5cc6abe4d2b4197774cfc6
5b5cc6abe4d2b4197774cfc6- 1Caretfalse
- 2Barfalse
- 3Ampersandtrue
- 4Reversed Caretfalse
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उत्तर : 3. "Ampersand"
व्याख्या :
Answer: C) Ampersand Explanation: '&' is a Logical Symbol and is called as Ampersand. ^ is called Caret - is called Bar v is called Reversed Caret.
प्र: Effective teamwork and high productivity are good indications of positive 2494 05b5cc662e4d2b4197774be7f
5b5cc662e4d2b4197774be7f- 1productivity goalstrue
- 2reinforcementfalse
- 3horizontal relationshipsfalse
- 4socializingfalse
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उत्तर : 1. "productivity goals"
व्याख्या :
Answer: A) productivity goals Explanation: In general, we know that Effective teamwork yields high productivity which is a good indications of positive productivity goals.