Water 1. Hydrogen bonds can only be formed between H and OH of the water molecule? False True None 2. What is the best thermodynamic explanation about the solubility of the non-polar compounds in the water System gains small enthalpy Entropy decreases ΔG is positive. All of the above None 3. Which of the following is facilitated by the ability of the membrane to selectively facilitate the passage of the water across? Salvation Osmosis Dilution Sequestration None 4. Which of the following leads to the formation of the dipole in the molecule? Electronegativity High molar mass Strong force of attraction between two molecules Hydrophobicity None 5. The fast mobility of the H3O+ is attributed to which of the following? Small molecular size High charge Proton Hopping mechanism All of the above None 6. Which of the following ions have the fastest mobility under electric field? Na+ K+ Cl- H3O+ None 7. Water molecule is polar because Oxygen attracts shared electron strongly There are two electric dipoles in the water Electrostatic attraction between H and O of the single molecule All of the above 1&2 None 8. Which of the following property of water is not attributed to hydrogen bonds? It imparts a strong cohesive force It makes water a polar compound It helps in interaction of large biomolecules without any physical interaction It leads to the expansion of volume of the water when cooled below 4°C None 9. Which of the following is true about dipole? It is observed within a single molecule It is a result of difference in the electronegativity of the constituent atoms It is a result of differences in the atomic masses of the participating elements 1&2 None 10. Which of the following is true about van der Waals forces These are not long range forces These forces can be present in hydrophobic groups also Random variation in electron clouds pose transient separation of charges All of the above None Time's up
