应用化学专业英语经典题
6页1、1. Hydrogen is prepared by means of _D_ reaction in lab.(a) substitution (b) decomposition (c) addition (d) displacement2. Benzene reaction with Cl2 belongs to _A_a) substitution (b) decomposition (c) addition (d) displacement3. The _C_ elements from monoatomic molecules due to their filled valent electronic configurations.(a) representative (b) transition element (c) inert gas (d) p-block4. Alkenes are produced in _B_ reaction as described below(a) addition (b) elimination (c) displacement (d)
2、substitution5. The _C_ structure of CH4 has been verified by electron diffracxtion because of sp3 hybridization.(a) flat square (b) parellel tetragonal (c) tetrahedral (d) tetragonal6. The octet rile simoly states that an atom tends to gain or lose electrons until there are _B_ electrons in its valent shell(a) 12 (b) 8 (c) 6 (d) 127. When water combines with pure CuSO4, a _B_ CuSO4.5H2O forms(a) hydrogenate (b) hydrate (c) hydrocarbon (d) hydride8. Lyophobic colloid generally have _A_ identity b
3、etween their molecules and solvent molecules.(a) attraction (b) electrostatic force (c) repulsion (d) electronegativity9. Which of the following has minimum ionization energy? D(a) Li (b) Na (c) K (d) Rb10. The seawater is saline solution. To desalinate seawater is the process to _D_ salt component(a) add (b) dilute (c) concentrate (d) remove11. There are(is) _A_ paired electrons in hydrogen(a) 1 (b) 2 (c) 3 (d)412. The valent electronic configuration for fluorine is _C_(a) 1s2 (b) 2s2 (c) 2s2.2
4、p5 (d) is2. 2s2, 2p513. The octet means that the number of electrons in _C_ shell has to be eight.(a) innermost (b) the whole (c) outermost (d) no14. Polysaccarides like cellulose and starch must first be subjected to _A_ to form simpler sugar, such as monosaccarides.(a) dehydration (b) composition (c) hydrolysiis (d) comparsion15. Which of the following belongs to transition metal? D(a) S (b) Na (c) He (d) V16 Addition of AgNO3 in a solution generates white AgCl _C_ that does not dissolve in HN
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