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Maha test -1

Total questions: 47

Worksheet time: 1hrs 25mins

Name
Class
Date
1.

Ambident nucleophile is

a)

CN

b)

H2O

c)

Cl

d)

NH2

2.

Among dihaloarenes, the melting point is highest for

a)

o-Isomer

b)

p-Isomer

c)

m-Isomer

d)

Same for all

3.

The reactivity of halides in SN2 reaction is

a)

3o>2o>1o

b)

2o>1o>3o

c)

1o>3o>2o

d)

1o>2o>3o

4.

SN2 reaction involves the formation of __________ intermediate

a)

Carbocation

b)

Carboanion

c)

Transition state

d)

None of these

5.

Which of the carbon atoms present in the molecule given below are asymmetric?

a)

a, b, c, d

b)

b, c

c)

a, d

d)

a, b, c

6.

Alkaline hydrolysis of (CH3)3CBr involves two steps as follows.

(CH3)3CBr → (CH3)3C+ + Br- slow

(CH3)3C+ + OH- → (CH3)3COH fast

Which of the following shows the rate equation for the reaction scheme?

a)

Rate = k[OH-]

b)

Rate = k[(CH3)3CBr]

c)

Rate = k[(CH3)3CBr]2

d)

Rate = k[(CH3)3CBr][OH-]

7.
a)

A

b)

B

c)

C

d)

D

8.
a)

A

b)

B

c)

C

d)

D

9.
a)

A

b)

B

c)

C

d)

D

10.
a)

A

b)

B

c)

C

d)

D

11.
a)

A

b)

B

c)

C

d)

D

12.
a)

A

b)

B

c)

C

d)

D

13.
a)

A

b)

B

c)

C

d)

D

14.
Which reason explains why gas bubbles are released when a carbonated beverage is opened? 
a)
decreasing the pressure increases the rate of solution
b)
the solubility of a gas in a liquid decreases with decreased pressure
c)
Exposing a liquid to air causes it to become a saturated solution 
d)
The solvent changes from a liquitd to a gas when the beverage is opened.
15.
Which reason explains why gas bubbles are released when a carbonated beverage is opened? 
a)
decreasing the pressure increases the rate of solution
b)
the solubility of a gas in a liquid decreases with decreased pressure
c)
Exposing a liquid to air causes it to become a saturated solution 
d)
The solvent changes from a liquitd to a gas when the beverage is opened.
16.

How does the presence of catalyst increase reaction rate?

a)

It lowers down activation energy

b)

It increases collision of particles

c)

It increases the energy of the reactant

d)

It increases activation energy

17.

change in concentration, Δ[conc]change in time, Δ t\frac{change\ in\ concentration,\ \Delta\left[conc\right]}{\text{change in time, }\Delta\ t} = ?

a)

Rate of reaction

b)

constant, k

c)

rate law

d)

reaction order

18.

The rate constant of a reaction is 5.8 ×\times 10 M-1s-1. The order of the reaction is...

a)

0th order

b)

1st order

c)

2nd order

d)

3rd order

19.

The plot shows the decomposition of H2O2.

What is the order of the reaction?

a)

0th order

b)

1st order

c)

2nd order

d)

3rd order

20.

The iodide ion reacts with hypochlorite ion in the following way:

OCl- + I- ⟶ OI- + Cl-.

This rapid reaction gives the rate data shown. What is the rate law?

a)

rate = [OCl-]2[I-]

b)

rate = [OCl-][I-]2

c)

rate = [OCl-][I-]

d)

rate = [OCl-]

21.

The quantity of charge required to obtain one mole of Aluminium from one mole of Al2O3 is

a)

1F 

b)

6F

c)

3F

d)

2F

22.

The cell constant of a conductivity cell

a)

changes with change of electrolyte. 

b)

changes with change of concentration of electrolyte. 

c)

changes with temperature of electrolyte.

d)

remains constant for a cell. 

23.

The positive value of the standard electrode potential of Cu2+/Cu  indicates that

a)

this redox couple is a stronger reducing agent than the H+/H2 couple.

b)

this redox couple is a stronger oxidizing agent than the  H+/H2 couple

c)

Cu can displace H+from dilute acid. 

d)

H+can displace Cu 2+from dilute acid.

24.

The emf of the cell:
Ni / Ni2+ (1.0 M) // Au3+ (1.0 M) / Au (E° = -0.25 V for Ni2+/Ni; E° = 1.5 V for Au3+/Au)  is

a)

1.25 V

b)

-1.25 V

c)

1.75 V

d)

2.0 V

25.

1.An example of ambidentate ligand

a)

CN

b)

en

c)

ONO

d)

BOTH A AND C

26.

2.[Co(NH3)(H2O)5]Cl3 is an example of ............. isomerism.

a)

linkage

b)

coordination

c)

ionisation

d)

hydrate

27.

3.coodination number of [Cr(en)3]Cl3 is

a)

3

b)

4

c)

6

d)

a

3 and 6

28.

4.IUPAC name of [Pt(H2O)Cl(NH3)2]Cl

(a)  

29.

Which type of isomerism does it have?

a)

Geometrical isomerism

b)

Functional Group isomerism

c)

Optical isomerism

d)

Structural isomerism

30.

Which of the following complexes can exhibit optical isomerism? (en = H2N–CH2–CH2–NH2 and is bidentate)

a)

cis–Co(NH3)4Cl2

b)

trans–Co(en)2Br2

c)

cis–Co(en)2Cl2

d)

Co(NH3)3Cl3

31.
a)

A

b)

B

c)

C

d)

D

32.

Which one among the following is a strongest base

a)

methyl amine

b)

Ammonia

c)

Phenyl amine

33.

Which is the correct arrangement of compounds based on decreasing order of Kb value

a)

methyl amine > ammonia > phenyl amine

b)

Phenyl amine > ammonia > methyl amine

c)

Ammonia > phenyl amine > methyl amine

34.

Reduction with iron scrap and HCl is preferred because

a)

Iron scrap is cheap

b)

FeCl2 formed gets hydrolysed to release hydrochloric acid

c)

FeCl3 is formed during the process

d)

NOne of the above

35.

Which reagent can be used to convert Nitrobenzene to Aniline

a)

KMNO4

b)

Ammonia

c)

Hydrogen on Palladium

d)

None of the above

36.

The breaking of the C–X bond by ammonia molecule is known as

a)

Halogenation

b)

Ammonolysis

c)

Reduction

d)

Ammonification

37.

What is the equilibrium-constant expression for 
CO2(g) + H2(g) ⇌ CO(g) + H2O(l)

a)
Kc= [CO][H2O] / [CO2][H2]  
b)
Kc= [CO2][H2] / [CO]
c)
Kc= [CO2][H2] / [CO][H2O]
d)
Kc= [CO] / [CO2][H2]  
38.
2SO2(g)+O2(g)⇌2SO3(g)
Removing O2(g) will
a)
shift equilibrium right
b)
shift equilibrium left
c)
decrease temperature
d)
have no change
39.
For the reaction...
heat  +  N2  +  O2  ↔  2NO
If the heat is added to the chemical system, the equilibrium will shift _______.
a)
left
b)
right
c)
left and right
d)
neither left nor right
40.

Which of the following are Lewis acids?

a)

PH3 and BCl3

b)

AlCl3 and SiCl4

c)

PH3 and SiCl4

d)

BCl3 and AlCl3

41.

What is the conjugate base of OH–?

a)

O2

b)

H2O

c)

O–

d)

O2-

42.

Species acting as both Bronsted acid and base is

a)

(HSO4) –

b)

Na2CO3

c)

NH3

d)

OH-

43.

The molar solubility of Cd(OH)2 is 1.84 × 10–5 M in water. The expected solubility of Cd(OH)2 in a buffer solution of pH = 12 is

a)

1.84 × 10–9 M

b)

2.49 × 10–10 M

c)

(2.49/ 1.84)× 10–9 M

d)

6.23 × 10–11 M

44.
Name the following
a)
2,3-dimethyl-4,4-diethyl heptane
b)
2,3-methyl-4,4-ethyl heptane
c)
4,4-ethyl-2,3-methyl heptane
d)
4,4-diethyl-2,3-dimethyl heptane
45.

Arrange the following in increasing order of stability based on resonance:

a)

i<ii<iii<iv

b)

i<iii<ii<iv

c)

i<iv<ii<iii

d)

i<iii<iv<ii

46.

Among the following, the least stable resonance structure

is

a)
b)
c)
d)
47.

Arrange in order of increasing acidic strength

a)

X>Z>Y

b)

Z<X>Y

c)

X>Y>Z

d)

Z>X>Y

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