IIT JEE प्रश्न और उत्तर का अभ्यास करें
8प्र: A man covered a certain distance at some speed. Had he moved 3 kmph faster, he would have taken 40 minutes less. If he had moved 2 kmph slower, he would have taken 40 minutes more. The distance (in km) is 1657 05b5cc6d9e4d2b4197774e816
5b5cc6d9e4d2b4197774e816- 130false
- 236false
- 340true
- 442false
- उत्तर देखेंउत्तर छिपाएं
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उत्तर : 3. "40"
व्याख्या :
Answer: C) 40 Explanation: Let distance = x km and usual rate = y kmph.Then, x/y - x/(y+3) = 40/60 --> 2y (y+3) = 9x ----- (i)Also, x/(y-2) - x/y = 40/60 --> y(y-2) = 3x -------- (ii)On dividing (i) by (ii), we get: x = 40 km.
प्र: P alone can do a piece of work in 24 days. The time taken by P to complete one-third of work is equal to time taken by Q to complete half of the work. How many days are required to complete by P and Q working together ? 1657 05b5cc6c2e4d2b4197774dbaa
5b5cc6c2e4d2b4197774dbaa- 19 3/5 daystrue
- 27 daysfalse
- 36 3/7 daysfalse
- 48 daysfalse
- उत्तर देखेंउत्तर छिपाएं
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उत्तर : 1. "9 3/5 days"
व्याख्या :
Answer: A) 9 3/5 days Explanation: Let the total work be 'W' As per the given information, P can complete the work 'W' in 24 days. => one day work of P = W/24 And also given that, The time taken by P to complete one-third of work is equal to time taken by Q to complete half of the work => PW/3 = QW/2 => P's 1 day = W/24 ? = W/3 => ? = 24W/3W = 8 => QW/2 = 8 days => Q alone can complete the work W in 16 days => P + Q can complete the work in 1/24 + 1/16 = 5/48 => 48/5 days = 9 3/5 days.
प्र: What is not a reason christian missionaries went to Asia? 1656 05b5cc619e4d2b4197774b745
5b5cc619e4d2b4197774b745- उत्तर देखेंउत्तर छिपाएं
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उत्तर :
व्याख्या :
To obtain exotic spices or to find trade items are not the reasons for christian missionaries went to Asia.
प्र: photosynthesis takes place faster in 1655 05b5cc69ee4d2b4197774c980
5b5cc69ee4d2b4197774c980- 1darknessfalse
- 2red lightfalse
- 3white lighttrue
- 4yellow lightfalse
- उत्तर देखेंउत्तर छिपाएं
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उत्तर : 3. "white light"
व्याख्या :
Answer: C) white light Explanation: As far as the rate of photosynthesis is concerned, it is fastest in white light making the rate of photosynthesis maximum. After White, We Have Violet Light Where Photosynthesis Occur To A Higher Extent as It Has The Shortest Wavelength Hence Has The Max Energy. So The Order Is :: white>violet>blue.
प्र: Below question has with a part of it underlined. The question is followed by four alternatives to replace the underlined part of the sentence. Choose the best alternative which is grammatically correct. In this particular job we have discovered that to be diligent is more important than being bright. 1655 05b5cc6d3e4d2b4197774e4aa
5b5cc6d3e4d2b4197774e4aa- 1for one to be diligent is more important than being bright.false
- 2by being diligent is important than being bright.false
- 3being diligent is more important than being bright.false
- 4diligence is more important than brightness.true
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उत्तर : 4. "diligence is more important than brightness."
व्याख्या :
Answer: D) diligence is more important than brightness. Explanation: Parallel construction error in the original statement. A similar form is required on each side of the comparison. " Diligence - brightness ".
प्र: Find the odd one out of the group ? 1653 05b5cc6e1e4d2b4197774ebca
5b5cc6e1e4d2b4197774ebca- 1708false
- 2392true
- 3618false
- 4816false
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उत्तर : 2. "392"
व्याख्या :
Answer: B) 392 Explanation: The sum of the digits in 708, 618 and 816 is 15, but not in 392.
प्र: How many blocks in a mile? 1653 05b5cc6a4e4d2b4197774cc7c
5b5cc6a4e4d2b4197774cc7c- 18 - 12false
- 212 - 15false
- 38 - 15false
- 415 - 20true
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उत्तर : 4. "15 - 20"
व्याख्या :
Answer: D) 15 - 20 Explanation: About 15 - 20 blocks become a 1 mile. City blocks differ in sizes. They do not have a standard measurement. Every geographical area has its own average city block size. A city block is a rectangular area in a city with several buildings with the streets around. It is also called "block" which, in a dictionary, is defined as an informal unit of distance from one intersection to the next.
प्र: What does the judicial branch do? 1653 05b5cc651e4d2b4197774bcda
5b5cc651e4d2b4197774bcda- उत्तर देखेंउत्तर छिपाएं
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उत्तर :
व्याख्या :
The United States government has 3 branches, which all serve an important role in running the government and keeping our system of laws in place. 1. The legislative branch 2. The executive branch 3. The judicial branch The legislative branch makes the laws while the executive branch enforces these laws. The judicial branch is a system of courts that applies the laws. Both the federal government and each of the 5 states have individual judicial branches which all serve this purpose. For example :: If the federal government were like a basketball game, the judicial branch is much like the referee that helps settle disputes. The executive branch and the legislative branch are often like the players in the game trying to score points against each other, and the judicial branch is there to clarify the rules and make sure each side is acting fairly.

