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NEET Test 36

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NEET Test 36
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Weekly Quiz Competition
  • Question 1
    4 / -1

    What is the final product of the given reaction? 
    ClCH2−COOH + NH3→X + HCl 
    Here X is-

    Solution

    The reaction involved is- 
    ClCH2COOH + NH3 → NH2CH2COOH + HCl 
    The product obtained is α-amino acetic acid which is commonly known as glycine.

     

  • Question 2
    4 / -1

    XeF6 on complete hydrolysis gives:

    Solution

    Xenon hexafluoride hydrolyzes stepwise- 

    XeF6 + H2O → XeOF4 + 2 HF 

    XeOF4 + H2O → XeO2F2 + 2 HF 

    XeO2F2 + H2O → XeO3 + 2 HF

     

  • Question 3
    4 / -1

    Number of moles present in 66g of H3PO4 is

    Solution

    Molecular wt. of H3PO4=98g. in moles= 66/98= 0.673 mole

     

  • Question 4
    4 / -1

    The human respiratory system is composed of how many parts?

    Solution

    The human respiratory system comprises of two parts. They are the respiratory tract and a pair of lungs.

     

  • Question 5
    4 / -1

    Rhinoviruses are the causative agents of

    Solution

    Common cold is caused by rhinoviruses. They cause inflammation of upper respiratory tract and release of mucus. There is no specific treatment for this.

     

  • Question 6
    4 / -1

    If for some reason, the vasa efferentia in the human reproductive system get blocked, the gametes will not be transported from

    Solution

    If the vasa efferentia in human reproductive system gets blocked, the gametes will not be transported from testes to epididymis as the sperms are produced in seminiferous tubule, then transported to rete testis. From rete testis they reach vasa efferentia and then finally from vasa effrentia they are transported to epididymis. So if vasa efferentia gets blocked, sperms will not be transported from rete testis to epididymis as vas efferentia connects rete testis with epididymis.

     

  • Question 7
    4 / -1

    In orange and lemon, the edible part of the fruit is

    Solution

    Citrus comes under hesperidium. Fruits develop from polycarpellary, superior ovary. Epicarp contains oil glands while mesocarp is white and fibrous. Endocarp grows inwards and form several chambers. Numerous juicy unicellular placenta hairs develop on endocarp which are edible.

     

  • Question 8
    4 / -1

    Edible part of mango is :

    Solution

    Edible part of mango is mesocarp and it is a drupe fruit.

     

  • Question 9
    4 / -1

    Pheretima and its close relatives derive nourishment from

    Solution

    Pheretima (Earthworm) derives its nutrition from soil that consist of decayed leaves, organic matter and algae. The organic matter is digested in the gut while the waste matter is excreted in the form of castings.

     

  • Question 10
    4 / -1

    Nucellar polyembryony is reported in species of

    Solution

    Polyembryony is defined as occurrence of 2 or more embryo in one ovule (one seed). Nucellar polyembryony is reported in species of citrus wherein the cells of nucellus and integuments develop into embryos which then lie in embryo sac and get nourishment from endosperm.

     

  • Question 11
    4 / -1

    In which one of the following enzymes, copper is necessarily associated as an activator.

    Solution

    A copper containing oxidase which is widely distributed in plants, animals called Tyrosinase; It oxidizes tyrosine to melanin in mammals and darkens the cut surfaces of many fruits and vegetables .

     

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