CBSE Class 12 Biotechnology Question Paper 2022 with Answer Key (April 28, Set 4- Morning Session)

CBSE CLASS XII Questions

• 1.

  Which of the following is not related to positive attitude?

  • It makes a person happier.
    
  • It helps to build and maintain relationships.
    
  • It decreases one's chances of success.
    
  • It helps to make better decisions.
    
  View Solution

  ---

• 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

  ---

• 3.

  Arrange the following in the correct sequence of their evolution and select the correct option:
  (i) Seaweed
  (ii) Invertebrates
  (iii) Jawless fish
  

  • (i), (ii), (iii)
  • (i), (iii), (ii)
  • (ii), (iii), (i)
  • (ii), (i), (iii)
  View Solution

  ---

• 4.

  Hari, Murari and Abhi were partners in a firm sharing profits and losses in the ratio of 8 : 7 : 4. Murari retired from the firm on 31st March, 2025. Hari and Abhi decided to share profits in the future in the ratio of 2 : 1. The gaining ratio of Hari and Abhi was:

  • 1 : 2
    
  • 8 : 7
    
  • 2 : 1
    
  • 7 : 4
    
  View Solution

  ---

• 5.

  In an economy, when __________ is insufficient to achieve the level of output corresponding to the full employment, the difference is termed a deflationary gap. 
   

  • ex-ante Aggregate Demand
    
  • ex-post Aggregate Demand
    
  • ex-ante Aggregate Supply
    
  • ex-post Aggregate Supply
    
  View Solution

  ---

• 6.

  The energy of an electron in an orbit in hydrogen atom is \( -3.4 \, \text{eV} \). Its angular momentum in the orbit will be:

  • \( \dfrac{3h}{2\pi} \)
    
  • \( \dfrac{2h}{\pi} \)
    
  • \( \dfrac{h}{\pi} \)
    
  • \( \dfrac{h}{2\pi} \)
  View Solution