CBSE Class 12 Computer Science Compartment Question Paper 2018 with Answer Key (July 16, Set 4- 91)

CBSE CLASS XII Questions

• 1.

  The process of copying genetic information from template strand of DNA into RNA is called transcription. It is mediated by RNA polymerase. Transcription takes place in the nucleus of eukaryotic cells. In transcription, only a segment of DNA and only one of the strands is copied into RNA. 

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• 2.

  Rohan failed an important exam. Instead of accepting that he didn't prepare well, he insists that the teacher was biased and the exam was unfair. Which defence mechanism is Rohan using?
  

  • Repression
    
  • Projection
    
  • Rationalization
    
  • Denial
    
  View Solution

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• 3.

  The painting Hazrat Nizamuddin Auliya and Amir Khusro belongs to which sub-school of Deccan Miniature?

  • Golconda sub-school
    
  • Ahmednagar sub-school
    
  • Hyderabad sub-school
    
  • Bijapur sub-school
  View Solution

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• 4.

  We know that plasmids and bacteriophages are the most commonly used vectors in biotechnology experiments. If we can link an alien piece of DNA to the plasmid DNA, the alien DNA can be multiplied equal to the copy number of the plasmid. Engineered vectors are used these days. Study the diagram of the E. coli cloning vector pBR322 and answer the questions that follow : 

  

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• 5.

  A square loop of side 0.50 m is placed in a uniform magnetic field of 0.4 T perpendicular to the plane of the loop. The loop is rotated through an angle of 60° in 0.2 s. The value of emf induced in the loop will be:

  • 5 V
    
  • 3.5 V
    
  • 2.5 V
    
  • Zero V
    
  View Solution

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• 6.

  (I) Write the scientific names of the two species of filarial worms causing filariasis.
  (II) How do they affect the body of infected persons ?
  (III) How does the disease spread ?

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