应用化学专业英语经典题

1. Hydrogen is prepared by means of _D___ reaction in lab.

(a) substitution (b) decomposition (c) addition (d) displacement

2. Benzene reaction with Cl2 belongs to __A__

a) substitution (b) decomposition (c) addition (d) displacement

3. The __C__ elements from monoatomic molecules due to their filled valent electronic configurations.

(a) representative (b) transition element (c) inert gas (d) p-block

4. Alkenes are produced in __B__ reaction as described below

(a) addition (b) elimination (c) displacement (d) substitution

5. The __C__ structure of CH4 has been verified by electron diffracxtion because of sp3 hybridization.

(a) flat square (b) parellel tetragonal (c) tetrahedral (d) tetragonal

6. 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) 12

7. When water combines with pure CuSO4, a __B__ CuSO4.5H2O forms

(a) hydrogenate (b) hydrate (c) hydrocarbon (d) hydride

8. Lyophobic colloid generally have _A___ identity between their molecules and solvent molecules.

(a) attraction (b) electrostatic force (c) repulsion (d) electronegativity

9. Which of the following has minimum ionization energy? D

(a) Li (b) Na (c) K (d) Rb

10. The seawater is saline solution. To desalinate seawater is the process to _D___ salt component

(a) add (b) dilute (c) concentrate (d) remove

11. There are(is) __A_ paired electrons in hydrogen

(a) 1 (b) 2 (c) 3 (d)4

12. The valent electronic configuration for fluorine is __C___

(a) 1s2 (b) 2s2 (c) 2s2.2p5 (d) is2. 2s2, 2p5

13. The octet means that the number of electrons in _C___ shell has to be eight.

(a) innermost (b) the whole (c) outermost (d) no

14. 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) comparsion

15. Which of the following belongs to transition metal? D

(a) S (b) Na (c) He (d) V

16 Addition of AgNO3 in a solution generates white AgCl __C__ that does not dissolve in HNO3

(a) solvent (b)silica-gel (c) precipitate (d) solvent

1. The nature of organic species present depends on the degree of biochemical change of the original plant, C

(a) pattern (b) fractions (c) substances (d) ceramics

2. I(py)2+ appears to be present in solution C

(a) be made (b) be dissolved (c) be detected (d) occur

3.The M-F-M bridge bonds invariably have greater M-F distances than corresponding terminal M-F bonds. C

(a) seldom (b) strongly (c) usually (d) never

4. The chemical potential decreases and both the effect, i.e., solubility and normal temperature