ETEA RECONDUCTED PAPER 2023

1. If the work done by the system on the surroundings and heat is absorbed by the system from the surroundings the change in internal energy ΔE will be

 
 
 
 

2. Humans are unable to digest

 
 
 
 

3. H2O has geometry

 
 
 
 

4. Greater the resonance energy of a molecule

 
 
 
 

5. For an endothermic reaction H represents the enthalpy of reaction. The minimum value for the energy for activation will

 
 
 
 

6. Flame tests identify alkali metals when they are burnt. Which of the combination given Is the correct one

 
 
 
 

7. Enantiomers are examples of

 
 
 
 

8. Compound X reacts with Grignard’s reagent to produce tertiary alcohols. Which is the compound

 
 
 
 

9. Brass is an alloy of

 
 
 
 

10. An unknown element having electronic configuration (Na) 5s2, 5p5. Will be

 
 
 
 

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