IIT JEE Practice Question and Answer

Q: Happiness is to 517768399 as senipah is to 3341 0

  • 1
    9836715
    Correct
    Wrong
  • 2
    9386615
    Correct
    Wrong
  • 3
    9386715
    Correct
    Wrong
  • 4
    9386517
    Correct
    Wrong
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Answer : 3. "9386715"
Explanation :

Answer: C) 9386715 Explanation: If each consecutive letter in "happiness" relates to the consecutive numbers in 517768399, then H=5, A=1, P=7, I=6, N=8, E=3 and S=9. Using the numbers that relate to the letters in 'senipah', you will arrive at SENIPAH = 9386715.   Hence, Happiness is to 517768399 as senipah is to 9386715.

Q: छाया क्षेत्र मौजूद है क्योंकि 3341 0

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Answer :
Explanation :

छाया क्षेत्र किसी दिए गए भूकंप से १०४ से १४० डिग्री की कोणीय दूरी से पृथ्वी का वह क्षेत्र है जिसे कोई सीधी पी तरंगें प्राप्त नहीं होती हैं। छाया क्षेत्र S तरंगों के तरल कोर द्वारा पूरी तरह से बंद होने और P तरंगों के तरल कोर द्वारा मुड़े (अपवर्तित) होने के परिणामस्वरूप होता है। शैडो ज़ोन दो प्रकार के होते हैं: एक P तरंगों के लिए और दूसरा S तरंगों के लिए। पी तरंग छाया 104-140 डिग्री, दोनों तरफ; S तरंग छाया एक तरफ के 105 से दूसरी तरफ 105 तक।

Q: Tract of land used for raising crops or livestock. 3340 0

  • 1
    A field
    Correct
    Wrong
  • 2
    A farm
    Correct
    Wrong
  • 3
    Both A & B
    Correct
    Wrong
  • 4
    None of the above
    Correct
    Wrong
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Answer : 3. "Both A & B"
Explanation :

Answer: C) Both A & B Explanation: A tract of land used for raising crops or livestockcan be called a field or a farm.

Q: Why are yeast cells frequently used as hosts for cloning? 3339 0

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    they are eukaryotic cells
    Correct
    Wrong
  • 2
    they do not have plasmids
    Correct
    Wrong
  • 3
    only yeast cells allow the gene to be cloned
    Correct
    Wrong
  • 4
    they easily form colonies
    Correct
    Wrong
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Answer : 1. "they are eukaryotic cells"
Explanation :

Answer: A) they are eukaryotic cells Explanation: If you were to produce a protein in bacterial cloning systems, you would not get the same post transcriptional and post translational modifications because the prokaryotic and eukaryotic systems work differently on the modifications. Thus human recombinant protein genes are usually cloned in yeast cells. Also since they have a short generation time, they can be easily culture.

Q: Select the correct statement about cellular respiration? 3334 0

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    All the carbon atoms in glucose ultimately incorporated during cellular respiration into carbon dioxide molecule
    Correct
    Wrong
  • 2
    All the carbon atoms in glucose ultimately incorporated during cellular respiration into NADH molecule
    Correct
    Wrong
  • 3
    All the carbon atoms in glucose ultimately incorporated during cellular respiration into ATP molecule
    Correct
    Wrong
  • 4
    All the carbon atoms in glucose ultimately incorporated during cellular respiration into water molecule
    Correct
    Wrong
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Answer : 1. "All the carbon atoms in glucose ultimately incorporated during cellular respiration into carbon dioxide molecule"
Explanation :

Answer: A) All the carbon atoms in glucose ultimately incorporated during cellular respiration into carbon dioxide molecule Explanation: All the carbon atoms in glucose ultimately incorporated during cellular respiration into carbon dioxide molecules.

Q: Paw : Cat :: Hoof : ? 3334 0

  • 1
    Donkey
    Correct
    Wrong
  • 2
    Lion
    Correct
    Wrong
  • 3
    Elephant
    Correct
    Wrong
  • 4
    Horse
    Correct
    Wrong
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Answer : 4. "Horse"
Explanation :

Answer: D) Horse Explanation: The cat's foot is called a paw. The horse's foot is called a hoof.

Q: The value of a machine depreciates at the rate of 10% every year. It was purchased 3 years ago. If its present value is Rs. 8,748, its purchase price was ? 3329 0

  • 1
    Rs.14,000
    Correct
    Wrong
  • 2
    Rs.12,000
    Correct
    Wrong
  • 3
    Rs. 12,800
    Correct
    Wrong
  • 4
    Rs. 15,000
    Correct
    Wrong
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Answer : 2. "Rs.12,000"
Explanation :

Answer: B) Rs.12,000 Explanation: We have P = 8748, R = -10 and n = 3Therefore, the purchase price of the machine= P1+R100n= 87481-101003= 8748 x (100/90) x (100/90) x (100/90)= 12,000.   Therefore, the purchase price of the machine was Rs. 12,000.

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Answer : 4. "2834"
Explanation :

Answer: D) 2834 Explanation: Let the total number of votes polled in the election be 100k.Number of valid votes = 100k - 20% (100k) = 80kLet the number of votes polled in favour of K and L be a and b respectively.a - b = 15% (100k) => a = b + 15k=> a + b = b + 15k + bNow, 2b + 15k = 80k and hence b = 32.5kIt is given that 100k = 872032.5k = 32.5k/100k x 8720 = 2834 The number of valid votes polled in favour of L is 2834.

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