資訊推薦

• 65.Which of the following alcohols gives the best yield of diakyl ether on being heated with a trace
• 66.The most effective pair of reagents for the preparation of tert-butyl ethyl ether is:(A)Potassium
• 67.Heating a particular ether with HBr yielded a single organic product. Which of the following conc
• 69.Ionization energies are(A)always negative (B)always positive (C)usually positive but sometimes ne
• 70.Rank the following in order of increasing size:Cl, Cl+, Cl-(A)Cl < Cl+< Cl-(B)Cl < Cl-&l
• 76.In the Lewis structure of ozone, the central oxygen atom has(A)1 lone pair and 4 bonding pairs of
• 73.When a catalyst is added to a reaction system,(A)the equilibrium position is changed (B)the entha
• 71.When carbon bonds to chlorine, the bond will be and atom bears a partial negative charge.(A)nonpo
• 72.Which of the following is (or are) the rate law for a reaction that is first order in oxygen?(A)r
• 78.Condider the following reaction: 3H2(g) + N2(g) « 2NH3(g). All of the following will lead to the
• 80.Which of the following conditions will result in a spontaneous reaction at all temperatures?(A)△H
• 1 依憲法增修條文規定，經濟及科學技術發展，應與下列何者兼籌並顧？(A)資源與環境保護 (B)教育與文化維護 (C)人文與文化促進 (D)環境及生態保護
• 74.Which of the following is not aromatic?(A)pyridine (B)furan (C)cyclobutadiene (D)benzene (E)annul
• 75.Which sub-shell can hold the greatest number of electrons?(A)3d (B)3p (C)4p (D)5p (E)5s
• 77.What type of orbitals best describes the bond between the two oxygen atoms in H-O-O-SO3?(A)sp-sp
• 24. 若a滿足( 383 − 83 )2 = 3832 − 83 × a，則a值為何？(A)83(B)383(C)683(D)766
• 68.In the 1H NMR spectrum of CH3CH2CH=CH2, how many signals are expected?(A)3 (B)4 (C)5 (D)6 (E)7
• 79.The conjugate acid of ammonia is(A)  NH-2(B)NH2OH (C) NH+ 4(D)HO-(E)NH3
• 2. Don’t _____ in the zoo. It’s very dirty.(A)clean (B)litter (C)help (D)study
• 10. A:Mark, your brother is not riding his bike. Is he hanging the bells on the Christmas tree?B:___
• 11. A: Timmy, is your birthday gift a comic book or a pencil box?B: _____.(A)Yes, it’s a pencil box.
• 3. A:May, are you _____ now? B:No, I’m making some Christmas cards.(A)lucky (B)free (C)thin (D)wrong
• 12. 選正確句子(A)Let’s don’t open the box.(B)Sophia is listening to music and her sister.(C)Tina’s birthd
• 4.Look! The men _____ near the tree.(A)fight (B)is fighting (C)are fight (D)are fighting
• 5. There is only one boy ______ the guitar at the concert.(A)playing (B)play (C)is playing (D)plays