Length and Time Quiz Questions and Answers PDF - 113

MCQ 561: Age of universe is

1. 5x10¹⁷
2. 5x10⁷
3. 5x10²⁷
4. 5x10²⁰⁷

MCQ 562: The principles of diffraction gratings were discovered by

1. Charles Darwin
2. James Gregory
3. Stephen Hawking
4. Michael Faraday

MCQ 563: Momentum of any particle like body cannot change unless

1. its angular acceleration changes
2. its gravity changes
3. its geometry changes
4. net external force changes

MCQ 564: Boiling point of Copper is

1. 373 K
2. 2323 K
3. 2868 K
4. 20.3 K

MCQ 565: Molar mass of Gallium is

1. 69.7 g/mol
2. 12.7 g/mol
3. 22.7 g/mol
4. 45 g/mol