DUET 2018 M.Phil./Ph.D. in Linguistics Question Paper with Answer Key PDF (June 20 - Shift 3)

DUET Questions

• 1.

  Phagocytosis and pinocytosis are collectively termed as

  • endocytosis
  • suspension feeding
  • omnivores
  • mucous trap
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• 2.

  Which will undergo fastest $82$ substitution reaction when treated with $NaOH$?

  • $H_5C_2 - \underset{\overset{|}{H}}{\overset{\underset{|}{C}H_3}{C}} - Br$
  • $CH_3 - \underset{\overset{|}{C}H_3}{\overset{\underset{|}{C}H_3}{C}} - Br$
  • $H - \underset{\overset{|}{C_2}H_5}{\overset{\underset{|}{C}H_3}{C}} - Br$
  • $H - \underset{\overset{|}{Br}}{\overset{\underset{|}{H}}{C}} - CH_2 - CH_2 - CH_3$
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• 3.

  The mobility of charge carriers increases with

  • increase in the average collision time
  • increase in the electric field
  • increase in the mass of the charge carriers
  • decrease in the charge of the mobile carriers
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• 4.

  Most stable carbocation is

  • 

  • 

  • 

  • 

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• 5.

  Which of the following statements is wrong?

  • Pollen grains remain viable for several months because their outer covering is made of sporopollenin
  • No enzyme can degrade sporopollenin
  • Pollen grains are well represented in fossil strata due to sporopollenin
  • Pollen wall has cavities containing proteins
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• 6.

  During the phenomenon of resonance

  • the amplitude of oscillation becomes large
  • the frequency of oscillation becomes large
  • the time period of oscillation becomes large
  • All of the above
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