Observations Quiz Questions and Answers PDF - 149

MCQ 741: K₂Cr₂O₇ is a crystalline solid which has color

1. Green
2. Orange red
3. Yellow
4. Black

MCQ 742: The canal Rays were proposed by

1. Goldstein
2. Dalton
3. J.J. Thomson
4. Millikan

MCQ 743: All gases can be compressed by

1. Increasing pressure
2. Decreasing pressure
3. No change in pressure
4. Keeping pressure constant

MCQ 744: Theendpointin KMnO₄ titration is always

1. Yellow
2. Green
3. Light Pink
4. Just colorless

MCQ 745: The apparatus used to measure the enthalpy of combustion of a substance is

1. Glass calorimeter
2. Copper calorimeter
3. Bomb calorimeter
4. All of above