dimagi paheli - 104 Find one difference ? Riddles and Puzzles for IQ Test | Hindi Paheli #Shorts

Paheliyan and Detective Riddles To Test Your Brain| Hindi Paheliyan | Mind Your Logic

Colourless solutions of the following four salts are placed separately in four different test tubes and a strip of copper is dipped in each one of these. Which solution will turn blue?

Which one of the following is not an objective of including riddles and puzzles in the EVS textbook?