GUJCET 2014 Biology Question Paper with Answer Key PDFs (May 8)

GUJCET Questions

• 1.

  In a reaction where iron (III) chloride reacts with hydrochloric acid, what is the expected outcome?
  

  • The reaction forms a simple complex.
    
  • The reaction forms a complex with different coordination.
    
  • The reaction forms a simple bond without coordination.
    
  • No reaction occurs.
    
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• 2.

  Which of the following is the correct chemical structure for the compound based on the given options?
  

  • \( 1-\text{Bromo}-2-\text{chloro}-3-\text{butene}-4-yl \)
    
  • \( 2-\text{Bromo}-2-\text{chloro}-3-\text{butene}-5-yl \)
    
  • \( 1-\text{Chloro}-2-\text{bromo}-3-\text{butene}-4-yl \)
    
  • \( 2-\text{Bromo}-1-\text{chloro}-3-\text{butene}-5-yl \)
    
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• 3.

  Kemi samagri ni enthalpy ma kyare badi badlavi aave che?
  

  • \(\text{C}_6\text{H}_5\text{NH}_2 + \text{OH}\)
    
  • \(\text{C}_6\text{H}_5\text{CH}_2\text{OH} + \text{COOH}\)
    
  • \(\text{CH}_3\text{OH} + \text{CH}_3\text{COCH}_3\)
    
  • \(\text{CH}_3\text{CH}_2\text{Cl} + \text{OH}\)
    
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• 4.

  The half-life of a radioactive substance is 5730 years. If carbon-14 decays and only 80% of it remains after a certain period, what is the time elapsed (in years)?
  

  • \( t = \frac{5730 \times 100}{0.3} \log \left(\frac{100}{80}\right) \)
    
  • \( t = \frac{5730}{0.3} \log \left(\frac{100}{80}\right) \)
    
  • \( t = \frac{5730}{0.3} \log \left(\frac{100}{80}\right) \)
    
  • \( t = \frac{5730}{0.3} \log 20 \)
    
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• 5.

  Which of the following is the correct relationship in terms of the physical properties of a substance?
  

  • The substance undergoes a reversible change, resulting in an irreversible process.
    
  • The substance undergoes a change that does not affect the physical state.
    
  • The substance undergoes a reversible change and retains its physical properties.
    
  • The substance undergoes an irreversible change and retains its original form.
    
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• 6.

  The following reaction occurs: \[ C_6H_6 + X \xrightarrow{\text{Reagents}} Y + Z \] What are the compounds \( X \), \( Y \), and \( Z \)?
  

  • \(\text{CH}_3\text{CH}_2\text{Cl}, \, \text{C}_6\text{H}_5\text{CH}_2\text{OH}, \, \text{CH}_3\text{COOH}\)
    
  • \(\text{CH}_3\text{CH}_2\text{CH}_2\text{OH}, \, \text{C}_6\text{H}_5\text{CH}_2\text{COOH}, \, \text{CH}_3\text{COCH}_3\)
    
  • \(\text{CH}_3\text{CH}_2\text{Cl}, \, \text{C}_6\text{H}_5\text{CH}_2\text{OH}, \, \text{CH}_3\text{COCH}_3\)
    
  • \(\text{CH}_3\text{CH}_2\text{Cl}, \, \text{C}_6\text{H}_5\text{OH}, \, \text{CH}_3\text{COCH}_3\)
    
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