IIT JEE Practice Question and Answer

Q: Find the odd one in the number series given below ? 17, 9, 10, 18.5, 35, 90 1662 0

  • 1
    9
    Correct
    Wrong
  • 2
    10
    Correct
    Wrong
  • 3
    18.5
    Correct
    Wrong
  • 4
    90
    Correct
    Wrong
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Answer : 3. "18.5"
Explanation :

Answer: C) 18.5 Explanation: The given series pattern follows   17       9       10       18.5       35       90   × 0.5 + 0.5,   × 1 + 1,   × 1.5 + 1.5,   × 2 + 2,   × 2.5 + 2.5   So here    17x0.5 + 0.5 = 9   9x1 + 1 = 10   10x1.5 + 1.5 = 16.5   16.5x2 + 2 = 35   35x2.5 + 2.5 = 90   Here the odd man in the given series is 18.5

Q: Translator program used in assembly language 1662 0

  • 1
    Assembler
    Correct
    Wrong
  • 2
    Interpreter
    Correct
    Wrong
  • 3
    Compiler
    Correct
    Wrong
  • 4
    Operating system
    Correct
    Wrong
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Answer : 1. "Assembler"
Explanation :

Answer: A) Assembler Explanation: Assemblers are used to translate a program written in a low-level assembly language into a machine code (object code) file so it can be used and executed by the computer.   Hence, Assembler is the translator program used in assembly language.

Q: Microwave communication uses high-frequency. 1662 0

  • 1
    TRUE
    Correct
    Wrong
  • 2
    FALSE Answer & Explanation Answer:
    Correct
    Wrong
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Answer : 1. "TRUE"
Explanation :

Answer: A) TRUE Explanation: Microwaves are high-frequency signals in the 300 MHz to 300 GHz range. This is in contrast to radio signals, which are typically broadcast in all directions. Radio signals operate in the 3 Hz to 300 MHz range. Microwave signals are used for both satellite and ground-based communications.

Q: If you write down all the numbers from 1 to 100, then how many times do you write 4 ? 1661 0

  • 1
    11
    Correct
    Wrong
  • 2
    20
    Correct
    Wrong
  • 3
    17
    Correct
    Wrong
  • 4
    14
    Correct
    Wrong
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Answer : 2. "20"
Explanation :

Answer: B) 20 Explanation: 4, 14, 24, 34, 44, 54, 64, 74, 84, 94 => has 11 number of (4's)40, 41, 42, 43, 45, 46, 47, 48, 49 => has 9 number of (4's)So, totally (11 + 9 = 20) number of 4's in 1 to 100.

Q: Tehri dam is located on which of the following rivers? 1661 0

  • 1
    Brahmaputra
    Correct
    Wrong
  • 2
    Godavari
    Correct
    Wrong
  • 3
    Ganga
    Correct
    Wrong
  • 4
    Bhagirathi
    Correct
    Wrong
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Answer : 4. "Bhagirathi"
Explanation :

Answer: D) Bhagirathi Explanation: Tehri dam is located on the river Bhagirathi. It is a multi-purpose rock and earth-fill embankment dam on the Bhagirathi River near Tehri in Uttarakhand, India.   It is the primary dam of the THDC India Ltd. and the Tehri hydroelectric complex.

Q: Three friends had dinner at a restaurant. When the bill was received, Akshitha paid 2/3 as much as Veena paid and Veena paid 1/2 as much as Lasya paid. What fraction of the bill did Veena pay ? 1661 0

  • 1
    11/3
    Correct
    Wrong
  • 2
    2/13
    Correct
    Wrong
  • 3
    3/11
    Correct
    Wrong
  • 4
    13/4
    Correct
    Wrong
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Answer : 3. "3/11"
Explanation :

Answer: C) 3/11 Explanation: Let Veena paid x,so Akshitha paid 2x/3 , and Lasya paid 2x,So total bill paid is given byx+(2x/3) +2x = 1, we geti.e. x = 3/11

Q: How many Nephrons are in each kidney? 1660 0

  • 1
    10,000
    Correct
    Wrong
  • 2
    1,00,000
    Correct
    Wrong
  • 3
    1,000,000
    Correct
    Wrong
  • 4
    1000
    Correct
    Wrong
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Answer : 3. "1,000,000"
Explanation :

Answer: C) 1,000,000 Explanation: There are about 1,000,000 nephrons in each human kidney. Nephron, functional unit of the kidney, the structure that actually produces urine in the process of removing waste and excess substances from the blood.

Q: Q = mc∆T refers to 1660 0

  • 1
    Enthalpy formula
    Correct
    Wrong
  • 2
    Heat Transfer formula
    Correct
    Wrong
  • 3
    Specific Heat formula
    Correct
    Wrong
  • 4
    Heat of Vaporization
    Correct
    Wrong
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Answer : 3. "Specific Heat formula"
Explanation :

Answer: C) Specific Heat formula Explanation: Q = mc∆T refers to Specific Heat formula.   When heat energy is added to a substance, the temperature will change by a certain amount. The relationship between heat energy and temperature is different for every material, and the specific heat is a value that describes how they relate.   Q = mc∆T   Q = heat energy (Joules, J) m = mass of a substance (kg) c = specific heat (units J/kg∙K) ∆T = change in temperature (Kelvins, K)

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