IIT JEE प्रश्न और उत्तर का अभ्यास करें

प्र: Which of the following is NOT a Union Territory? 2533 0

  • 1
    Daman and Diu
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  • 2
    Puducherry
    सही
    गलत
  • 3
    Shillong
    सही
    गलत
  • 4
    Lakshadweep
    सही
    गलत
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उत्तर : 3. "Shillong"
व्याख्या :

Answer: C) Shillong Explanation: We know that The seven union territories of India are are: Chandigarh. Dadra and Nagar Haveli. Daman and Diu. Lakshadweep. Puducherry. Andaman and Nicobar Islands. National Capital Territory of Delhi.   Hence, Shillong is not a Union Territory.

प्र: Which of the following is an example of market failure? 1502 0

  • 1
    Prices do not reflect the full social cost of production
    सही
    गलत
  • 2
    A firm goes out of business because it cannot find a market for its products
    सही
    गलत
  • 3
    Prices rise so that the consumers cannot afford the products they want to buy
    सही
    गलत
  • 4
    Producer surplus is maximized
    सही
    गलत
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उत्तर : 1. "Prices do not reflect the full social cost of production"
व्याख्या :

Answer: A) Prices do not reflect the full social cost of production Explanation: Prices do not reflect the full social cost of production is an example of Market failure.   A market failure occurs when the supply of a good or service is insufficient to meet demand. This results in an inefficient distribution of resources among market participants. It also occurs if externalities are not accounted for. If a firm fails to maximize its profits this is not a general market failure.

प्र: Which of the following is NOT a representative of a Buddhist Art? 2517 0

  • 1
    Relic Towers
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    गलत
  • 2
    Vihara
    सही
    गलत
  • 3
    Stupa
    सही
    गलत
  • 4
    Chaitya
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उत्तर : 1. "Relic Towers"
व्याख्या :

Answer: A) Relic Towers Explanation:

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उत्तर :
व्याख्या :

That 8 letter word is Whatsapp (a messenger app) First four letters:   WHAT a question Letters 2,3,4:     HAT protects our headLetters 5,6,7:   SAP an IT companyLetters 7,8:    PP same.

प्र: A tin a mixture of two liquids A and B in the proportion 4 : 1. If 45 litres of the mixture is replaced by 45 litres of liquid B, then the ratio of the two liquids becomes 2 : 5. How much of the liquid B was there in the tin? What quantity does the tin hold? 1917 0

  • 1
    58 l
    सही
    गलत
  • 2
    65 l
    सही
    गलत
  • 3
    50 l
    सही
    गलत
  • 4
    62 l
    सही
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उत्तर : 3. "50 l"
व्याख्या :

Answer: C) 50 l Explanation: Let the tin contain 5x litres of liquids 5x - 45 x 455x - 45 x 15 + 45 = 25 => 5(4x - 36) = 2(x + 36) => 20x - 180 = 2x + 72 => x = 14 litres Hence, the initial quantity of mixture = 70l Quantity of liquid B = 70 - 45 x 15 + 45  = 50 litres.

प्र: Angle of Elevation means 1693 0

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उत्तर :
व्याख्या :

In Heights and Distances, The angle of elevation of an object is the angle between the horizontal and the line of sight that is the line from the object to the observer's eye.

प्र: Bacteria divide by 1584 0

  • 1
    Binary Fission
    सही
    गलत
  • 2
    Spirilla
    सही
    गलत
  • 3
    RNA
    सही
    गलत
  • 4
    Fusion
    सही
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उत्तर : 1. "Binary Fission"
व्याख्या :

Answer: A) Binary Fission Explanation: Bacteria divided and reproduce by Binary fission. In this process, the bacterium, which is a single cell, divides into two identical daughter cells. Binary fission begins when the DNA of the bacterium divides into two replicates.

प्र: What is the value of a two–digit number? A. The sum of the digits is 15. B. The difference of the squares of the digits is 45. C. The difference of their digits is 3. 1461 0

  • 1
    B and C together are sufficient
    सही
    गलत
  • 2
    Any one pair of A and B, B and C or C and A is sufficient
    सही
    गलत
  • 3
    C and A together are sufficient
    सही
    गलत
  • 4
    A and B together are sufficient
    सही
    गलत
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उत्तर : 2. "Any one pair of A and B, B and C or C and A is sufficient"
व्याख्या :

Answer: B) Any one pair of A and B, B and C or C and A is sufficient Explanation: From the given data, Let the two gits of a number be x & y A) x + y = 15   B) x2 - y2 = 45 (x+y) (x - y) = 45   C) x - y = 3 From any 2 of the given 3 statements, we can find that 2 digit number as  2x = 18 => x = 9 => y = 6 Hence, 2 digit number is 96.   Any one pair of A and B, B and C or C and A is sufficient to find.

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