IIT JEE Practice Question and Answer

Q: Study of teeth is called 3539 0

  • 1
    Pedagogy
    Correct
    Wrong
  • 2
    Ornithology
    Correct
    Wrong
  • 3
    Orthoepy
    Correct
    Wrong
  • 4
    Odontology
    Correct
    Wrong
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Answer : 4. "Odontology"
Explanation :

Answer: D) Odontology Explanation: The study or scientific study of the structure, development, and abnormalities of the teeth is called Odontology. The science that studies teeth and their surrounding tissues, especially the prevention and cure of their diseases is called Dentology.

Q: That which cannot be corrected 2489 0

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    Incorrigible
    Correct
    Wrong
  • 2
    Illegible
    Correct
    Wrong
  • 3
    Illegal
    Correct
    Wrong
  • 4
    Indelible
    Correct
    Wrong
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Answer : 1. "Incorrigible"
Explanation :

Answer: A) Incorrigible Explanation: The One-word substitute for That which cannot be corrected is Incorrigible.

Q: 1/8 as a decimal? 1627 0

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    0.125
    Correct
    Wrong
  • 2
    0.225
    Correct
    Wrong
  • 3
    0.325
    Correct
    Wrong
  • 4
    0.425
    Correct
    Wrong
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Answer : 1. "0.125"
Explanation :

Answer: A) 0.125 Explanation: 1/8 to convert into decimal, Find an equivalent fraction with a denominator of a power of 10. In this case, we will use 1000. 18 x 125125 = 1251000 This can now be written as a decimal with 3 decimal places (because we have thousandths. i.e, 0.125   Hence, 18 as a decimal = 0.125

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Answer :
Explanation :

We can make an equation: 3(100000 + x) = 10x+1 (Why? Well, adding 100000 puts a 1 at the front of a five-digit number, and multiplying by 10 and adding 1 puts a 1 at the end of a number) Solving this gives: 10x+1 = 3(100000 + x) 10x+1 = 300000 + 3x 10x = 299999 + 3x7x = 299999x = 299999/7 = 42857 The answer is 42857 (142857 is three times smaller than 428571).

Q: Where is the Sahara desert located? 1575 0

  • 1
    India
    Correct
    Wrong
  • 2
    Africa
    Correct
    Wrong
  • 3
    America
    Correct
    Wrong
  • 4
    Iraq
    Correct
    Wrong
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Answer : 2. "Africa"
Explanation :

Answer: B) Africa Explanation: The Sahara is the largest non-polar desert in the world. The Sahara is the largest hot desert and the third largest desert in the world after Antarctica and the Arctic. The desert covers large sections of Algeria, Chad, Egypt, Libya, Mali, Mauritania, Morocco, Niger, Western Sahara, Sudan and Tunisia. It covers 9 million square kilometers (3,500,000 sq mi), amounting to 31% of Africa. Its borders include the Mediterranean Sea to the north, the Atlantic Ocean to the west and the Red Sea to the east.

Q: What sugar is found in DNA? 1677 0

  • 1
    Ribose
    Correct
    Wrong
  • 2
    Deoxyribose
    Correct
    Wrong
  • 3
    Pentose
    Correct
    Wrong
  • 4
    Sucrose
    Correct
    Wrong
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Answer : 2. "Deoxyribose"
Explanation :

Answer: B) Deoxyribose Explanation: DNA - Deoxyribonucleic acid is a type of nucleic acid. The sugar contained in it is called Deoxyribose.

Q: KYC norms for e-wallets made mandatory from 1413 0

  • 1
    March 31
    Correct
    Wrong
  • 2
    March 1
    Correct
    Wrong
  • 3
    April 1
    Correct
    Wrong
  • 4
    May 1
    Correct
    Wrong
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Answer : 2. "March 1"
Explanation :

Answer: B) March 1 Explanation:

Q: How old are you if you are born in 1995? 1648 0

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    22
    Correct
    Wrong
  • 2
    23
    Correct
    Wrong
  • 3
    24
    Correct
    Wrong
  • 4
    25
    Correct
    Wrong
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Answer : 2. "23"
Explanation :

Answer: B) 23 Explanation: Calculating Age has 2 conditions. Let your Birthday is on January 1st. 1. If the month in which you are born is completed in the present year i.e, your birthday, then Your Age = Present year - Year you are born  As of now, present year = 2018 i.e, Age = 2018 - 1995 = 23 years.   2. If the month in which you are born is not completed in the present year i.e, your birthday, then Your Age = Last year - Year you are born As of now, present year = 2018 i.e, Age = 2017 - 1995 = 22 years.

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