IIT JEE Practice Question and Answer

Q: Contour bunding is a method of soil conservation used in 2936 0

  • 1
    Scrublands, liable to spread of weed growth
    Correct
    Wrong
  • 2
    Hilly and Slopy or mountain areas
    Correct
    Wrong
  • 3
    Low flat plains, close to stream courses, liable to flooding
    Correct
    Wrong
  • 4
    Desert margins, liable to strong wind action
    Correct
    Wrong
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Answer : 2. "Hilly and Slopy or mountain areas"
Explanation :

Answer: B) Hilly and Slopy or mountain areas Explanation: Contour bunding is a proven sustainable land management practice for mountainous areas, marginal, sloping, and hilly land where the soil productivity is very low.   It is widely adopted by the ethnic minorities of Nepal who practice the shifting cultivation system of farming.

Q: The shorter i am, the bigger i am. What am I? 1705 0

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Answer :
Explanation :

A Temper.

Q: What organelle allows some protists to detect light? 1457 0

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Answer :
Explanation :

An organelle called Eyespot allows some protists to detect light. It allows the cells to sense light direction and intensity and respond to it by swimming either towards the light (positive phototaxis) or away from the light (negative phototaxis).   Eyespot is a photoreceptive organelle found in the flagellate or (motile) cells of green algae and other unicellular photosynthetic organisms such as euglenids.   Eyespot-mediated light perception helps the cells in finding an environment with optimal light conditions for photosynthesis. Eyespots are the simplest and most common "eyes" found in nature, composed of photoreceptors and areas of bright orange-red pigment granules.

Q: Which of the following is the primary purpose of the DSM? 4026 0

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    Understanding the causes of mental disorders
    Correct
    Wrong
  • 2
    Placement of mental disorders in appropriate cultural context
    Correct
    Wrong
  • 3
    Diagnosis of mental disorders
    Correct
    Wrong
  • 4
    Selection of appropriate psychological therapies for mental disorders
    Correct
    Wrong
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Answer : 3. "Diagnosis of mental disorders"
Explanation :

Answer: C) Diagnosis of mental disorders Explanation: The DSM is the Diagnostic and Statistical Manual of Mental Disorders; it is currently in its fifth edition. The DSM is published by the APA, American Psychiatric Association. It is a crucial resource in the fields of psychology and psychiatry.

Q: The 1911 Chinese revolution ended the rule of the 3097 0

  • 1
    Ming dynasty
    Correct
    Wrong
  • 2
    Mongolians dynasty
    Correct
    Wrong
  • 3
    Song dynasty
    Correct
    Wrong
  • 4
    Manchus dynasty
    Correct
    Wrong
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Answer : 4. "Manchus dynasty"
Explanation :

Answer: D) Manchus dynasty Explanation: It was the Qing Dynasty, who was a Manchu Dynasty whose rule ended in 1911 Chinese revolution.

Q: What is the place value of 6 in 64? 2508 0

  • 1
    6
    Correct
    Wrong
  • 2
    60
    Correct
    Wrong
  • 3
    64
    Correct
    Wrong
  • 4
    10
    Correct
    Wrong
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Answer : 2. "60"
Explanation :

Answer: B) 60 Explanation: We know that, ● Each digit has a fixed position called its place. ● Each digit has a value depending on its place called the place value of the digit. ● The face value of a digit for any place in the given number is the value of the digit itself ● Place value of a digit = (face value of the digit) × (value of the place).   Hence, the place value of 6 in 64 = 6 x 10 = 60.

Q: Which best describes the practice of outsourcing? 2761 0

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Answer :
Explanation :

In business, outsourcing is an agreement in which one company contracts its own internal activity to different company. It involves the contracting out of a business process (e.g. payroll processing, claims processing) and operational, and/or non-core functions (e.g. manufacturing, facility management, call center support) to another party (see also business process outsourcing).   A company moves some of its jobs to another country and employing workers in other countries to save on labor costs best describes the practice of outsourcing.

Q: Which of the following foods does not support bacterial growth? 42074 0

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    Raw carrots
    Correct
    Wrong
  • 2
    Sauted onions
    Correct
    Wrong
  • 3
    Refried beans
    Correct
    Wrong
  • 4
    Cooked rice
    Correct
    Wrong
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Answer : 1. "Raw carrots"
Explanation :

Answer: A) Raw carrots Explanation: Cooked food create an enabling environment for bacteria to grow because of their moisture content and because of the normal temperature of the food. Raw food does not offer suitable conditions for bacteria growth.    Hence, raw carrots does not support bacterial growth.

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