Observations Multiple Choice Questions (MCQ) PDF - 128

MCQ 636: When starch is added to iodine solution, the color becomes

1. Yellow
2. White
3. Blue
4. Crimson red

MCQ 637: The value of hydration energy for hydrogen ion is

1. (-)1075 KJ/mol
2. 1075 KJ/mol
3. 1175 KJ/mol
4. 1499 KJ/mol

MCQ 638: The second electron affinity value is always

1. Positive
2. Negative
3. May be positive
4. May be negative

MCQ 639: When a solid is heated, the energy of its particles increases

1. Kinetic energy
2. Potential energy
3. Internal energy
4. All of above

MCQ 640: In the reaction 2Fe + 3Cl₂ → 2FeCl₃

1. Cl₂ is oxidized
2. Fe is reduced
3. Fe is oxidized
4. Cl₂ is reduced