Download - Chemistry With Achyut Mishra

Quiz
CHEMISTRY
Chemical bonding
1. Fill in the blanks
(A)
According to Arrhenius acid- base theory, in neutralisation reaction ……………….. Molecule is formed.
(B)
…………….. Acid base theory cannot define that NH3 is a base.
(C)
The conjugate acid of HPO32 is …………………….
(D)
All Bronsted bases are Lewis ………………………..
(E)
All Lewis acids are …………………….. Bronsted…………………..
2. Match the following
Column –II
Column -I
(A)
BF3
(I)
H3PO2
(B)
NH4
(II)
Lewis Acid
(C)
H2O
(III)
H  OH  H2O
(D)
Mono basic Acid
(IV)
Bronsted Acid
(E)
Neutralisation
(V)
Amphiprotic
3. Which of the following is a weakest base?
(A) NaOH
(B) Zn(OH)2
(C) KOH
4. Which of the following represents acid-base pair for the equilibrium reaction, HCl  H2O
(D) Ca(OH)2
H3O  Cl
(C) HCl, Cl
(D) Cl ,H2O
(C) H2SO4
(D) H2 S2 O3
6. Which of the following is the Bronsted acid?
(A) Cl
(B) HCO3
(C) HCOO
(D) CH3COO
7. Weakest acid of the following is :
(A) ClO3  OH
(B) ClO2  OH
(C) SO  OH2
(D) SO2 OH2
(C) PO34
(D) H3PO4
(A) HCl, H2O
(B) HCl, H3O+
5. The conjugate acid of S2O82 is :
(A) HS2O8 
(B) HSO4
8. The conjugate acid of HPO24 is :
(A) H2PO4
(B) H2PO24
Quiz
CHEMISTRY
9. In the reaction, BCl3  PH3 
Cl3B  PH3 , Lewis base is :
(C) Cl3B  PH3
(D) None of these
10. Which is the weakest base among the following?
(A) Cl–
(B) I 
(C) Br 
(D) F 
11. Dissociation of H3PO3 occurs in ……………. stages.
(A) 1
(B) 2
(C) 3
(D) 4
(A) BCl3
(B) PH3
12. Which of the following could act as a Lewis acid but not Bronsted acid?
(A) HCl
(B) H2SO4
(C) HSO3
(D) SO3

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