IIT JEE Practice Question and Answer

Q: What are the Monomers that make up Proteins? 1270 0

  • 1
    Amino acids
    Correct
    Wrong
  • 2
    Nucleotides
    Correct
    Wrong
  • 3
    Disaccharides
    Correct
    Wrong
  • 4
    Chaperones
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 1. "Amino acids"
Explanation :

Answer: A) Amino acids Explanation: Proteins are long chains of Amino acids. That is in brief, Amino acids are the monomers of Proteins. Amino acids are compounds which contain both an amino group and a carboxylic group. Proteins are made up of 20 essential amino acids. Monomer means a small molecule of an organic substance i.e, building block in general.

Q: According to Forbes, Who has become Asia’s richest person in the year 2017? 1269 0

  • 1
    Jeff Bezos
    Correct
    Wrong
  • 2
    Hui Ka Yan
    Correct
    Wrong
  • 3
    Mukesh Ambani
    Correct
    Wrong
  • 4
    Bill Gates
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 3. "Mukesh Ambani"
Explanation :

Answer: C) Mukesh Ambani Explanation: Reliance Industries Chairman Mukesh Ambani overtook China’s Hui Ka Yan to become Asia’s richest person with a total wealth of $42.1 billion. According to Forbes’ real time billionaire’s list, Ambani's personal wealth rose by $466 million in 2017.

Q: Which warship has become the India’s first warship to install solar panels on board ? 1268 0

  • 1
    INS Sindhudurg
    Correct
    Wrong
  • 2
    INS Sarvekshak
    Correct
    Wrong
  • 3
    NS Vindhyagiri
    Correct
    Wrong
  • 4
    INS Godavari
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 2. "INS Sarvekshak"
Explanation :

Answer: B) INS Sarvekshak Explanation: Indian Navy’s survey vessel INS Sarvekshak has become the India’s first warship to install solar power system on board. The solar power system works on sunlight and hence is 100% per cent reliable for power source that can be used for communication equipment, battery charging and general lightings onboard round the clock with battery outputs during night. The system is maintenance free.

Q: Consider 5 independent Bernoulli’s trials each with probability of success p. If the probability of at least one failure is greater than or equal to 31/32 , then p lies in the interval ? 1268 0

  • 1
    [1, 32]
    Correct
    Wrong
  • 2
    (0, 1)
    Correct
    Wrong
  • 3
    [1, 1/2]
    Correct
    Wrong
  • 4
    (1, 1/2]
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 3. "[1, 1/2]"
Explanation :

Answer: C) [1, 1/2] Explanation: Probability of atleast one failure= 1 - no failure > 31/32= 1 - P5 > 31/32=  P5<1/32= p < 1/2Also p > 0Hence p lies in [0,1/2].

Q: Intermolecular forces in HCl are 1268 0

  • 1
    Hydrogen bonding
    Correct
    Wrong
  • 2
    Dipole-dipole
    Correct
    Wrong
  • 3
    Dispersion force
    Correct
    Wrong
  • 4
    All the above
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 4. "All the above"
Explanation :

Answer: D) All the above Explanation: Intermolecular forces : The forces of attraction present in between the molecules or atoms or compounds is termed as intermolecular forces. The molecule HCl is composed of hydrogen and chlorine atom. There is high difference in electronegativities therefore, it is polar in nature. The H end of HCl is permanently slightly positive charge. The Cl end of HCl has a permanent slight negative charge. the "H" in one molecule is attracted to the "Cl" in a neighbor. The intermolecular force is weak compared to a covalent bond. But this dipole-dipole interaction is one of the stronger intermolecular attractions. It also has hydrogen bonding and dispersion forces.  Dispersion forces are the weakest forces which are present in between all molecules or atoms.Hydrogen bonds are present in molecules having at least one H-A bond where A is the strong electronegative atom (mainly F, Cl and N).

Q: Who has been appointed as the first woman Secretary General of the Lok Sabha? 1268 0

  • 1
    Rama Devi
    Correct
    Wrong
  • 2
    Sumitra Mahajan
    Correct
    Wrong
  • 3
    Anupama Kare
    Correct
    Wrong
  • 4
    Snehlata Shrivastava
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 4. "Snehlata Shrivastava"
Explanation :

Answer: D) Snehlata Shrivastava Explanation: Snehlata Shrivastava, appointed as the first woman Secretary General of the Lok Sabha. The appointment was made by Lok Sabha Speaker Sumitra Mahajan. Ms. Shrivastava will replace Anoop Mishra, who retired on November 30, 2017.  Ms. Shrivastava, a senior civil servant with 35 years of rich and varied administrative experience is a 1982 batch IAS officer from the Madhya Pradesh cadre. Rama Devi holds the distinction of the being the first woman secretary general of the Rajya Sabha.

Q: The difference of two numbers is 1365. On dividing the larger number by the smaller, we get 6 as quotient and 15 as remainder. What is the smaller number  ? 1266 0

  • 1
    270
    Correct
    Wrong
  • 2
    1270
    Correct
    Wrong
  • 3
    350
    Correct
    Wrong
  • 4
    720
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 1. "270"
Explanation :

Answer: A) 270 Explanation: Let the smallest number be x.Then larger number = (x + 1365)x + 1365 = 6x + 15= 5x = 1350 x = 270Smaller number = 270.

Q: The wavelength of a wave is the distance between 1266 0

  • 1
    Crest and Trough
    Correct
    Wrong
  • 2
    Crest and Crest
    Correct
    Wrong
  • 3
    Trough and Trough
    Correct
    Wrong
  • 4
    Both B & C
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 4. "Both B & C"
Explanation :

Answer: D) Both B & C Explanation: Distance between two Consecutive Crests or two Consecutive Troughs is called Wavelength. But the distance between crest and adjacent trough is half the wavelength. That is the distance between adjacent crest and trough is called Half the wavelength.

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully