1. Which of following cannot be classified as Arrhenious acid
a. HNO3
b. H2CO3
c. CO2
d. H2SO4
2. NH3 cannot be classified as a base by
a. Lewis theory
b. Bronsted Lowry atheory
c. Arrhenious theory
d. all of these
3. Which of following is a Lewis base
a. BF3
b. HCl
c. AlCl3
d. F–
4. Choose Lewis acid
a. CN-
b. NH3
c. H2O
d. H+
5. A drain cleaner solution contains 1*10-8M OH- concentration. This solution is
a. acidic
b. basic
c. neutral
d. cannot be predicted
6. Milk of magnesia contains Mg(OH)2. It is used as in antacid.It neutralizes excess stomach acid . Which salt is formed in this reaction
a. MgSO4
b. MgCO3
c. MgCl2
d. MgO
7. Ammonia is a base because it
a. ionizes in water to give OH- ions
b. contains OH- ions
c. can accept an electron pair
d. can accept proton
8. Consider the following reaction H2O + HCl …..> H3O+ + Cl-. Ehich specie is an electron pair acceptor in this reaction?
a. H3O+
b. H2O
c. HCl
d. none
9. Which specie is donating es pair in following reaction NH3 + BF3 …….>[NH3-BF3]
a. H
b. B
c. N
d. BF3
10. AN aqueous solution of NaOh is used as a drain cleaner. If the conc of hydroxide ions is 1*10-5 . the conc of H+ will be
a. 1* 10-5
b. 1* 10-7
c. 1* 10-9
d. none
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