TEST PAPER SCIENCE 3
Q.1) Why do metals not evolve hydrogen gas with nitric acid? Q.2) What are oxidising agents? Q.3) What will be the structural formula and electron dot structure of cyclopentane? Q.4) Write down an account of composition of blood. Q.5) Differentiate between autotroph and heterotroph. Q.6) What is peristalsis? Q.7) What is the function of trachea? Q.8) How are the alveoli designed to maximize the exchange of gases? Q.9) Explain the advantages of vegetative propagation. Q.10) State the process of grafting. Q.11) What is sexual reproduction? List its four significances. Q.12) What is meant by DNA copying? Q.13) How does the embryo get nourishment inside the mother's body? Q.14) Explain the term lateral inversion. Q.15) List four specific characteristics of the image of the objects formed by convex mirrors.