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Worksheets

Practical Class N (D)

Total questions: 20

Worksheet time: 37mins

Name
Class
Date
1.

Tollen’s reagent contains:

a)

Ag

b)

Cu+

c)

Cu2+

d)

Ag+

2.

Fehling’s solution contains: a)

b) c) d)

a)

Ag

b)

Cu+

c)

Cu2+

d)

Ag+

3.

Glucose reacts with Tollen’s reagent to give precipitate which is known as

a)

Silver mirror

b)

Gold mirror

c)

Blood red precipitate

d)

White precipitate

4.

Glucose on treatment with conc. H2SO4 will generate:

a)

Furfural

b)

Furan

c)

5-Hydroxymethylfurfural

d)

5-Methylfurfural

5.

In Mulliken-Barker’s test, the aromatic nitro group is reduced to:

a)

Amine

b)

amide

c)

nitroso

d)

hydroxylamine

6.

Aromatic nitro group can be reduced to the amino group using:

a)

Zn/NH4Cl

b)

Zn/AcOH

c)

Sn/ conc. HCl

d)

Na/EtOH

7.

Role of conc. H2SO4 in Molisch test for carbohydrates:

a)

dehydrating agent

b)

dye-forming agent

c)

oxidant

d)

dehydrating agent and oxidant

8.

In litmus paper test of p-nitrophenol

a)

Red litmus turns blue

b)

Blue litmus turns red

c)

No change in blue and red litmus

d)

both blue and red litmus change colour

9.

Hydroquinone is

a)

not soluble in water

b)

soluble in water

c)

soluble in hexane

d)

not soluble in ethanol

10.

Phenol reacts with sodium to generate

a)

O2

b)

CO2

c)

H2O

d)

H2

11.

Sodium fusion extract prepared from p-bromoacetanilide will contain

a)

NaBr

b)

NaCN

c)

NaBr and NaCN

d)

NaSCN

12.

Benzoic acid and cinnamic acid can be distinguished by

a)

NaHCO3 test

b)

Litmus test

c)

Ignition test

d)

Unsaturation test

13.

Conversion of nitrobenzene into m-dinitrobenzene is an example of

a)

Aromatic nucleophilic substitution

b)

Aromatic electrophilic substitution

c)

Nucleophilic substitution

d)

Elimination reaction

14.

Phthalic anhydride reacts with urea to generate:

a)

Thiourea

b)

Phthalic acid

c)

Phthalimide

d)

Uric acid

15.

The spin only magnetic moment of complex {K3 [Cr(C2O4)3].3H2O} is

a)

4.87

b)

2.80

c)

3.87

d)

No one is coorect

16.

Number of geometrical isomers possible for the complex {K3 [Cr(C2O4)3].3H2O} are

a)

1

b)

2

c)

3

d)

No one is coorect

17.

For the preparation of 2.5 g {[Zn(acac)2].H2O} complex the amount of ZnSO4.7H2O needed is

a)

2.5 g

b)

2.69 g

c)

3.1 g

d)

No any answer correct

18.

In the preparation of {K3[Cr(C2O4)3].3H2O} complex the slow addition of K2Cr2O7 help to avoid

a)

An exothermic reaction

b)

Sudden release of CO2

c)

An exothermic reaction and Sudden release of CO2

d)

No one is correct

19.

The properties of a compound is same as it constituent ions. The compound would be a

a)

Coordination polymer

b)

Coordination complex

c)

Double salt

d)

All of the options are correct

20.

The structure of {[Zn(acac)2].H2O} complex is

a)

Square planer

b)

Tetrahedral

c)

Octahedral

d)

None of the options are correct