NDA2023General AbilityGeneral ScienceActual
Match List I with List II and select the correct answer using the code given below the Lists:
Options
- AA-3, B-4, C-2, D-1
- BA-4, B-2, C-1, D-3
- CA-3, B-2, C-4, D-1
- DA-4, B-1, C-2, D-3
Correct answer
C. A-3, B-2, C-4, D-1
Step-by-step solution
Electrolysis of water is a decomposition reaction. Burning of coal is a combination reaction. Iron nail emersed in a copper sulphate solution here Iron displaces copper ions from an aqueous solution of copper sulphate. It is a single displacement reaction of one metal by another metal. Here both Al and Ba displaces each other so it is a double displacement reaction Al ₂ ( SO ₄ )₃+ BaCl ₂ AlCl ₃+ BaSO ₄