Chapter 5 PHOTO CHEMISTRY MCQs 10 min Score: 0 Attempted: 0/10 Subscribe 1. The photochemical reaction which takes place by directly absorbing light (A) Primary (B) Secondary (C) Tertiary (D) ChainShow All Answers 2. Who gave the law of photochemical equivalence (A) GrothusāDraper (B) Faraday (C) StarkāEinstein (D) HenryShow All Answers 3. Photosynthesis is an example of (A) Photophysical process (B) Photochemical process (C) Thermochemical process (D) PhotosensitizationShow All Answers 4. Phosphorescence and fluorescence are examples of (A) Photo reaction (B) Dark reaction (C) Photophysical reaction (D) Photosynthetic reactionShow All Answers 5. The emission of light as a result of chemical reaction (A) Fluorescence (B) Phosphorescence (C) Chemical luminescence (D) Chemical reactionShow All Answers 6. Number of molecules reacted per quantum of light absorbed (A) Electric field (B) Yield per pass (C) Quantum yield (D) Yield percentShow All Answers 7. Photochemical reactions are (A) Chain (B) Fusion (C) Fission (D) None of theseShow All Answers 8. UV and IR are (A) Visible rays (B) Invisible rays (C) Both a & b (D) None of theseShow All Answers 9. In photochemical reaction increase in (A) P.E (B) K.E (C) Internal energy (D) All of theseShow All Answers 10. Intensity of light is measured by (A) Electrode (B) Potentiometer (C) Photoelectric cell (D) All of theseShow All Answers
