IIT JEE Practice Question and Answer
8Q: Diego Garcia is 1473 05b5cc6afe4d2b4197774d1fb
5b5cc6afe4d2b4197774d1fb- 1An Islandfalse
- 2A Countryfalse
- 3An Oceanfalse
- 4Nonetrue
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Answer : 4. "None"
Explanation :
Answer: D) None Explanation: Diego Garcia is a chain of Islands in the Indian ocean with large military base under British Indian Ocean Territory. The U.S. military facility on the island of Diego Garcia in the Indian Ocean represents a horrific example of the human costs of war and imperialism.
Q: Anu's present age is 9 years more than that of what Raj's age will be after five years. Raj's present age is seven years more than that of what Renu's age was 4 years ago. Renu's present age is 19 years. What will be Anu's age after 5 years ? 1472 05b5cc6cae4d2b4197774dfd4
5b5cc6cae4d2b4197774dfd4- 139 yrsfalse
- 236 yrsfalse
- 346 yrsfalse
- 441 yrstrue
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Answer : 4. "41 yrs"
Explanation :
Answer: D) 41 yrs Explanation: Anu = (Raj + 5) + 9 = Raj + 14 -------- (I) Raj = (Renu - 4) + 7 = Renu + 3 ------- (II) Raj's age = 19 + 3 = 22 years After 5 years Anu's age = 22 + 14 + 5 = 41 years
Q: Using numbers from 0 to 9 the number of 5 digit telephone numbers that can be formed is 1472 05b5cc7b4e4d2b4197775088d
5b5cc7b4e4d2b4197775088d- 11,00,000false
- 259,049false
- 33439true
- 46561false
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Answer : 3. "3439"
Explanation :
Answer: C) 3439 Explanation: The numbers 0,1,2,3,4,5,6,7,8,9 are 10 in number while preparing telephone numbers any number can be used any number of times. This can be done in 105ways, but '0' is there So, the numbers starting with '0' are to be excluded is 94 numbers. Total 5 digit telephone numbers = 105- 94 = 3439
Q: A polygon has 44 diagonals, then the number of its sides are ? 1472 05b5cc754e4d2b4197774fbb9
5b5cc754e4d2b4197774fbb9- 113false
- 29false
- 311true
- 47false
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Answer : 3. "11"
Explanation :
Answer: C) 11 Explanation: Let the number of sides be n. The number of diagonals is given by nC2 - n Therefore, nC2 - n = 44, n>0 nC2 - n = 44 n2 - 3n - 88 = 0 n2 -11n + 8n - 88 = 0 n(n - 11) + 8(n - 11) = 0 n = -8 or n = 11. As n>0, n will not be -8. Therefore, n=11.
Q: Where was India's first F1 circuit built? 1472 05b5cc683e4d2b4197774c2b1
5b5cc683e4d2b4197774c2b1- 1Jaipurfalse
- 2Coimbatorefalse
- 3Noidatrue
- 4Chennaifalse
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Answer : 3. "Noida"
Explanation :
Answer: C) Noida Explanation: Fi circuit refers to Formula One, is the highest class of open-wheeled auto racing defined by FIA, motorsport's world governing body. The Buddh International Circuit is an Indian motor racing circuit in Greater Noida, Uttar Pradesh was India's first F1 circuit.
Q: Which of the following is not a prime number? 1472 05b5cc655e4d2b4197774bd59
5b5cc655e4d2b4197774bd59- 15false
- 211false
- 321true
- 437false
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Answer : 3. "21"
Explanation :
Answer: C) 21 Explanation: A prime number is a whole number greater than 1 whose only factors are 1 and itself. Factors of 5 are 1, 5 Factors of 11 are 1, 11 Factors of 21 are 1, 3, 7, 21 Factors of 37 are 1, 37. Hence, according to the definition of a prime number, 21 is not a prime number as it has more than two factors.
Q: The heat from the sun reaches earth through Convection. 1471 05b5cc69ce4d2b4197774c85f
5b5cc69ce4d2b4197774c85f- 1TRUEfalse
- 2FALSEtrue
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Answer : 2. "FALSE"
Explanation :
Answer: B) FALSE Explanation: The given statement, The heat from the sun reaches earth through Convection is FALSE. Heat from the sun actually reaches the earth through Radiation. The process occurs through electromagnetic radiation, specifically, in which molecules are warmed when the heat reaches them, and these molecules then warm other molecules touching them, which continues until we feel the sun's heat.
Q: Why is Meiosis called Reduction Division? 1471 05b5cc6b0e4d2b4197774d2e4
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Answer :
Explanation :
Meiosis :: Meiosis is a type of cell division that reduces the chromosome number by half in daughter cells, creating four haploid cells, each genetically distinct from the parent cell that gave rise to them. Why it is called as Reduction Division :: 1. As the Meiosis division process involves in reduction of chromosome number in the daughter cells to half the number in the parent cell, this process is called Reduction Division.Meiosis creates gametes (egg and sperm cells). 2. The resulting gametes have 23 new chromosomes, one member of each of the 23 pairs, representing unique combinations of the original maternal and paternal copies.

