Book Back Question and Answers

Science : Chapter 14 : Transportation in Plants and Circulation in Animals I. Choose the best answer 1. Active transport involves Ans ; All of the above 2. Water which is absorbed by roots is transported to aerial parts of the plant through Ans ; Xylem 3. During transpiration there is loss of Ans ; […]

Science : Chapter 13 : Structural Organisation of Animals I. Choose the best answer 1. In leech locomotion is performed by Ans ; None of the above 2. The segments of leech are known as Ans ; Metameres (somites) 3. Pharyngeal ganglion in leech is a part of Ans; Nervous system 4. The brain of

Science : Chapter 12 : Anatomy and Plant Physiology I. Choose the best answer 1. Casparian strips are present in the __________ of the root. Ans ; Endodermis 2. The endarch condition is the characteristic feature of Ans ; Stem 3. The xylem and phloem arranged side by side on same radius is called __________.

Science : Chapter 11 : Carbon and its Compounds I. Choose the best answer 1. The molecular formula of an open chain organic compound is C3H6. The class of the compound is__________. Ans ; alkene 2. The IUPAC name of an organic compound is 3-Methyl butan-1-ol. What type compound it is? Ans ; Alcohol 3.

Science : Chapter 10 : Types of Chemical Reactions I. Choose the correct answer. 1. H2(g) + Cl2(g) → 2HCl(g) is a Ans ; (b) Combination Reaction 2. Photolysis is a decomposition reaction caused by __________. Ans ; (c) light 3. A reaction between carbon and oxygen is represented by C(s) + O2(g) → CO2(g) + Heat. In which of the

Science : Chapter 9 : Solutions SOLUTIONS Formulae Solubility mass of the solute/mass of the solvent x 100 Mass Percentage mass of the solute/mass of the solvent x 100 Volume Percentage volume of the solute/Volume of the solute + volume of sovent x 100 I. Choose the correct answer. 1. A solution is a __________

Science : Chapter 8 : Periodic Classification of Elements PERIODIC CLASSIFICATION OF ELEMENTS Formulae Metallic radius Distance between the nuclei of a adjacent metal atoms / 2 Covalent radius Distance between the nuclei of two covalently bonded atoms of the same element ina molecule / 2 I. Choose the best answer. 1. The number of periods

Science : Chapter 7 : Atoms and Molecules ATOMS AND MOLECULES Formulae Relative Atomic Mass (RAM) (Ar) = Average mass of the isotopes /1/12th mass of one Carbon-12 atom Relative Molecular Mass (RMM) Mass of one molecules of the substance/1/12th mass of one C-12 atom Number of moles Mass / Atomic MassMass / Molecular massNumber

Science : Chapter 6 : Nuclear Physics I. Choose the correct answer 1. Man-made radioactivity is also known as __________. Ans ; a & c 2. Unit of radioactivity is __________. Ans ; all the above 3. Artificial radioactivity was discovered by __________. Ans ; Irene Curie 4. In which of the following, no change

Science : Chapter 5 : Acoustics ACOUSTICS Formulae Effect of density V ∝√(1/D) Effect of temperature Vt = (vo + 0.61 T) ms-1 Speed of Sound distance travelled / Time taken = 2d/t Veloocity = 2d/t Distance  travelld by sound / time taken Source and listener move toward each other n’ = (v+vL/v-vS) n Source and listener