Multiple Choice Questions | Chapter 11 Thermal Transformations | 10th Physics | NBF New Book FBISE скачать в хорошем качестве

Multiple Choice Questions | Chapter 11 Thermal Transformations | 10th Physics | NBF New Book FBISE

For latest videos, click on the following link: https://whatsapp.com/channel/0029VaGr... 1. During a hot summer day, a metal bridge might expands slightly. This expansion is caused by (a) The bridge rusting and weakening (b) The metal atoms in the bridge vibrating more intensely (c) The weight of cars driving over the bridge (d) A decrease in the air pressure around the bridge. 2. Fog forms on a cold window pane in the morning. Which change of state is occurring? (a) Melting (b) Boiling (c) Condensation (d) Deposition 3. Which process involves the change of state from a gas to a solid without passing through the liquid phase? (a) Deposition (b) Melting (c) Freezing (d) Sublimation 4. Boiling point of water is: (a) 212℃ (b) 212℉ (c) 100𝐾 (d) 373℃ 5. 𝐽〖𝑘𝑔〗^(−1) 𝐾^(−1) is the unit of: (a) Specific heat capacity (b) Heat capacity (c) Latent heat of fusion (d) Heat energy 6. Evaporation takes place from (a) Surface (b) Bottom (c) Center (d) Any location 7. Relation between linear and volume expansion of solids is (a) 𝛽=𝛼/3 (b) 𝛽=1.5𝛼 (c) 𝛼=𝛽/3 (d) 𝛼=3𝛽 8. Heat added to a substance, as its melting pointing, is used to: (a) Increase K.E of particle (b) Decrease K.E of particles (c) Increase attraction between particles (d) Decrease attraction between particles 9. 336𝐽/𝑔 is latent heat of fusion of a material. How much heat is required to melt 10𝑔 of material at its melting point? (a) 336𝐽 (b) 3360𝐽 (c) 336600𝐽 (d) 3.36×〖10〗^5 𝐽 10. Which of the following factors increases the rate of evaporation? (a) Decrease in temperature (b) Increase in humidity (c) Increase in wind speed (d) Decrease in surface area 11. What is value of 𝛼 for a solid if its 𝛽 is 9×〖10〗^(−7) 𝐾^(−1)? (a) 3×〖10〗^(−7) 𝐾^(−1) (b) 4.5×〖10〗^(−7) 𝐾^(−1) (c) 9×〖10〗^(−7) 𝐾^(−1) (d) 27×〖10〗^(−7) 𝐾^(−1) 12. The process that involves the latent heat of vaporization is (a) Melting of ice (b) Freezing of water (c) Evaporation (d) Condensation of steam 13. The sum and difference of the coefficient of real and apparent expansion of a liquid are in the ratio 2:1. The ratio of the coefficient of real expansion and apparent expansion must be (a) 1:1 (b) 2:1 (c) 2:3 (d) 3:1 14. Latent heat refers to the energy absorbed or released by a substance during a change of state, but with no change in temperature. What does “latent” mean in this context? (a) Constant (b) Visible (c) Hidden (d) Transparent