. Choose correct alternative from those alternatives given below for th following statements : 12. Which element is present in third group and third period in the modern periodu table ? B. Mg A. Be C. Ca D. Al 13. From where does digestion of protein start in human being ? A. Mouth B. Stomach C. Small intestine D. Colon 14. Which part of the flower becomes mature and modified into fruit? A. Ovule B. Carpel C, Ovary D. Female gamete 15. By which component is the expression of genetic information conducted generatio to generation ? A. Protein B. Enzyme C. RNA D. DNA 16. The velocity of which colour of light is minimum in the glass prism? A. Violet B. Blue C. Green D. Red 17. Which fuel is used in thermal power plant? A. Biomass B. Fossil fuel C. Wood D. Charcoal​