IIT JEE प्रश्न और उत्तर का अभ्यास करें

प्र: Durand Cup is associated with the game of 3184 0

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    Badminton
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    Volleyball
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    Football
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    Hockey
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उत्तर : 3. "Football"
व्याख्या :

Answer: C) Football Explanation: Durand Cup is associated with the game of Football. The Durand Football Tournament or Durand Cup is a football competition in India which was first held in 1888. It is co-hosted by the Durand Football Tournament Society (DFTS) and Osians All the matches are free-of-cost for spectators, and the winner gets ₹ 50 lakh. The Tournament is named after its founder, Sir Mortimer Durand from Simla.

प्र: Eugenics is the study of 2060 1

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    impair the racial qualities of future generations either physically or mentally
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    different races of mankind
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    genetic of plants
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    people of European origin
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उत्तर : 1. "impair the racial qualities of future generations either physically or mentally"
व्याख्या :

Answer: A) impair the racial qualities of future generations either physically or mentally Explanation: Eugenics is the study of altering human beings by changing their genetic components.   It is the study of the agencies under social control that may improve or impair the racial qualities of future generations either physically or mentally.

प्र: There are 5 consecutive odd numbers. If the difference between square of the average of first two odd number and the of the average last two odd numbers is 396, what is the smallest odd number? 2018 0

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    29
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    27
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    31
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    33
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उत्तर : 1. "29"
व्याख्या :

Answer: A) 29 Explanation: Let the five consecutive odd numbers be x-4, x-2, x, x+2, x+4 According to the question, Difference between square of the average of first two odd number and the of the average last two odd numbers is 396 i.e, x+3 and x-3 ⇒x + 32 - x - 32 = 396⇒ x2 + 9 + 6x - x2 + 6x - 9 = 396⇒ 12x = 396⇒ x = 33   Hence, the smallest odd number is 33 - 4 = 29.

प्र: Reptile is to Lizard as Flower is to 2591 0

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    Orchids
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    Stem
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    Leaf
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    Petal
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उत्तर : 1. "Orchids"
व्याख्या :

Answer: A) Orchids Explanation: Here Lizard is a type of Reptiles whereas Orchid is a type of flowers. Other than Orchids all are parts of Plants.   Hence, Reptile is to Lizard as Flower is to Orchids.

प्र: What has 4 Eyes But cannot see? 1417 0

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उत्तर :
व्याख्या :

What has 4 Eyes But cannot see is Mississippi. The wording of Mississippi has 4 'i''s. But it can't see.

प्र: Poison glands of snakes are homologous to 3107 0

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    sebaceous glands of mammals
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    salivary glands of vertebrates
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    stings of rays
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    electric organs of fishes
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उत्तर : 2. "salivary glands of vertebrates"
व्याख्या :

Answer: B) salivary glands of vertebrates Explanation: Here Homologous Means having the same relation or relative position or structure.  Here in snakes poison is in glands and here salivary glands are in Vertebrates.

प्र: The Largest country of the World by Geographical Area is 1885 0

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    China
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    United States of America
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    Russia
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    Australia
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उत्तर : 3. "Russia"
व्याख्या :

Answer: C) Russia Explanation: Russia is the Largest country of the World by Geographical Area.   Top 10 largest countries of the World : 1. Russia 2. Canada 3. United States of America 4. China 5. Brazil 6. Australia 7. India 8. Argentina 9. Kazakhstan 10. Algeria   When all 10 of the world's largest countries are taken together, they total 49% of the earth's entire 149 million square kilometres of land.

प्र: Nucleus of Hydrogen atom consists of 1826 0

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    2 protons only
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    2 neutrons only
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    1 proton only
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    1 electron only
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उत्तर : 3. "1 proton only"
व्याख्या :

Answer: C) 1 proton only Explanation: The nucleus of hydrogen consists of only a single proton. Its parts are a single negatively-charged electron that circles a single positively-charged nucleus of the hydrogen atom. The electron is bound to the nucleus by the Coulomb force.

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