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Chemistry

Total questions: 100

Worksheet time: 58mins

Name
Class
Date
1.

The residence time of NO & NO2 in atmosphere is

a)

5 to 6 days

b)

3 to 4 days

c)

9 to 10 days

d)

2 weeks

2.

Plsstic is recycled by

a)

Depolymerization

b)

Reprocessing

c)

Transformation

d)

All of above

3.

The fresh water being used for domestic purpose is

a)

8 %

b)

23 %

c)

69%

d)

80%

4.

The normal amount of overhead ozone is

a)

300 DU

b)

350 DU

c)

400 DU

d)

450 DU

5.

Peroxy aceytyl nitrate is a irritant to human

a)

Nervous system

b)

Lungs

c)

Eyes

d)

Heart

6.

In which zone of rotary kiln the temperature goes upto 1500°C

a)

Clinker zone

b)

Cooling zone

c)

Burning zone

d)

Decomposition zone

7.

The pH of unpolluted rain water should be

a)

5.00

b)

5.60

c)

6.50

d)

7.00

8.

Which woody raw material is used for the manufacture of paper pulp

a)

Cotton

b)

Rice straw

c)

Poplar

d)

Bagasse

9.

Phosphorus helps the growth of

a)

Stem

b)

Seed

c)

Leaves

d)

Roots

10.

Argillaceous material in the following isl

a)

Lime

b)

Clay

c)

Marble

d)

Marine shell

11.

Calender stock is the stage of paper making where

a)

Paper is stored

b)

Thickness is reduced

c)

Water is removed

d)

Water is added

12.

Which one of the polymers is an addition polymer

a)

Nylon-6,6

b)

Polystyrene

c)

Terylene

d)

Epoxy resin

13.

Enzyme used for the diagnosis of obstructive jaundice is

a)

LDH-I

b)

L-Asperginase

c)

Lipase

d)

Alkaline phosphatese

14.

Which one of the following is not a fatthy acid

a)

Propanoic acid

b)

Acetic acid

c)

Phthalic acid

d)

Butanoic acid

15.

The optimum pH of salivry amylase is

a)

5.4 to 6.9

b)

5.4 to 7.9

c)

6.4 to 6.9

d)

6.4 to 7.4

16.

Alkaline hydrolysis of esters is known as

a)

Esterification

b)

Dehydration

c)

Saponification

d)

Alkalination

17.

The fiber which is made from acrylonitrile as monomer

a)

PVC

b)

Ryon fiber

c)

Acrylic fiber

d)

Polyester fiber

18.

Vegetable oils are

a)

Unsaturated fatty acids

b)

Glycerides of unsaturated fatty acids

c)

Essential oils obtained from plants

d)

Gylcerides of saturated fatty acids

19.

Which one of the polymer is obtained by condensation polymerization

a)

PVC

b)

Polystyrene

c)

Polyester

d)

Polyvinyl acetate

20.

Dipolar structure of zwitter ion is also called

a)

Double salt

b)

Health salt

c)

Internal salt

d)

External salt

21.

Tryosine was first isolated from

a)

Sugar

b)

Cheese

c)

Butter

d)

Milk

22.

Amino acids are prepared by

a)

Williamson's synthesis

b)

Wurtz reaction

c)

Strecker's synthesis

d)

Perkin's reaction

23.

Which derivative cannot be prepared directly from acetic acid

a)

Acetamide

b)

Acetyl chloride

c)

Acetyl anhydride

d)

Ethyl acetate

24.

Aldehydes on reduction form

a)

Ketons

b)

Primary alcohols

c)

Alkyl halides

d)

Tertiary alcohols

25.

Phenylhydrazine on treatment with carbonyl group form

a)

Oximes

b)

Hydroxyl amines

c)

Phenylhydrazones

d)

None of them

26.

Catalysts used for preparation of formaldeyde

a)

Pt-asbastos

b)

FeO , MoO3

c)

Cu catalyst

d)

All of above

27.

Which will not give iodoform test with I2/NaOH?

a)

Acetaldehyde

b)

Acetone

c)

Butanoe

d)

3-pentannlone

28.

Hydroxy propanoic acid is called

a)

Oxalic acid

b)

Lactic acid

c)

Citric acid

d)

Aspartic acid

29.

Addition of alcohols in carbonyl compounds give acetals, the geometry of acetal is

a)

Linear

b)

Trigonal

c)

Tetrahydra

d)

Octahydral

30.

Which is most difficult to oxidize

a)

C2H5CHO

b)

CH3CHO

c)

HCHO

d)

CH3COCH3

31.

Isopropanal on treatnent with Cu at 300°C forms

a)

Propylene

b)

Ethane

c)

Acetaldehyde

d)

Formaldehyde

32.

A cannizaro's reaction takes place

a)

With same molecule of aldehtde

b)

With different molecules of aldehydes

c)

With neither

d)

With same and different aldehydes

33.

Aldol condensation is

a)

Electrophilic

b)

Acid catalyzed

c)

Base catalysed

d)

None

34.

Diethyl ether is also called

a)

Benzoxybenzene

b)

Hydroxybenzene

c)

Phenoxy benzene

d)

Alkyl benzene

35.

Ethanol & methanol can be distinguished by

a)

Lucas test

b)

Iodoform test

c)

Benedict test

d)

Tollen's test

36.

Ethers show the phenomenon of

a)

Cis-trans isomerism

b)

Functional grouo isomerism

c)

Position isomerism

d)

Metamerism

37.

The compund used in the orocessing of anti-polio vaccine is

a)

Acetaldehyd

b)

Acetone

c)

Ethyl bromide

d)

Firmaldehyde

38.

Phenol can be identified by the test

a)

Bayer's test

b)

Lucas test

c)

Bromine water test

d)

Ring test

39.

Treatment of NH3 with excess of ethyl chlorid will yield

a)

Methyl amine

b)

Tetraethyl ammonium chloride

c)

Diethyl ammine

d)

Ethane

40.

Grignard reagent gives alkanes with

a)

Water

b)

Ethanol

c)

Ethylamine

d)

All of these

41.

Double bond is formed as a result of

a)

Substitution reaction

b)

Addition reaction

c)

Elimination reaction

d)

Re-arrangement reaction

42.

Shape of carbocation is

a)

Tetrahydral

b)

Square planar

c)

Planar

d)

Linear

43.

Reduction of tertiary alkyl halides with LiAlH4 mainly gives

a)

Cycloalkanes

b)

Alkenes

c)

Alkanes

d)

Alkynes

44.

n-butane on treatment with AlCl3 in the presence of a small amoubt of HCl yields

a)

1-butene

b)

Chlorobutane

c)

Isobutane

d)

2-butene

45.

Number of carbon atoms in diesel oil is

a)

20 & higher

b)

12-18

c)

6-8

d)

23 and higher

46.

When coal is heated in the absence of air, it is converted into

a)

Petroleum

b)

Aliphatic hydrocarbons

c)

Coke, coal tar, coal gas

d)

None of above

47.

Petane has number of isomers

a)

4

b)

6

c)

3

d)

5

48.

The isomerism shown by alkanes is

a)

position

b)

Geometric

c)

Skeletal

d)

Metamerism

49.

The process used to improve the qulity of gasoline is

a)

Reforming

b)

Combustion

c)

Catalytic cracking

d)

Thermal cracking

50.

For catalytic cracking, the catalyst used is

a)

Silica

b)

Alumina

c)

Mixture of silica & alumina

d)

AlCl3

51.

Which one of the following product can be obtained by the reaction of CH3I and C2H5I with Na

a)

C2H6

b)

C4H10

c)

C3H8

d)

All above

52.

Which one of the following cycloalkanes would exhibit minimum angle strain

a)

Cyclopropane

b)

Cyclobutane

c)

Cyclopentane

d)

cyclohexane

53.

Acidic hydrogen is present in

a)

Benzene

b)

ethene

c)

Acetylene

d)

Butane

54.

Vinyl acetylene reacts with HCl to form

a)

Epoxy resins

b)

Polyacetylene

c)

Chloroprene

d)

Neoprene

55.

Ethylene react with ozone to form

a)

formaldehyde

b)

acetaldehyde

c)

ozonide

d)

ethyl alcohol

56.

To which one of the following compounds addition of HBr will follow Markownikov's rule

a)

CH3CH = CHCH3

b)

CH3CH = CH2

c)

CH2 = CH2

d)

None

57.

Baeyer's reagent is

a)

Dilute alkaline KMnO4 solution

b)

HCl + ZnCl

c)

Br2 & CCl4

d)

anhydrous ether

58.

Calcium carbide reacts with water to form

a)

ethyne

b)

ethane

c)

ethene

d)

ehthanoic acid

59.

Lindlar's catalyst is

a)

Ba[PbSO4] quinoline

b)

Pd[PbSO4] Quinoline

c)

Pd[BeSO4] Quinoline

d)

Pd[BaSO4] Quinoline

60.

Chloroprene is used for making

a)

Rubber

b)

patrol

c)

propane

d)

liquid feul

61.

Nitration of toluene takes place at

a)

m-position

b)

o-position

c)

p-position

d)

both b & c

62.

C-C bond length in benzene is

a)

1.34 A

b)

1.20 A

c)

1.39 A

d)

1.54 A

63.

Aromatic com pounds give sooty flame because

a)

resist the reaction with air

b)

have stable structure

c)

contain high percentage of carbon

d)

have a cyclic structure

64.

E2 reaction obeys

a)

first order kinetics

b)

second order kinetics

c)

third order kinetics

d)

zero order kinetics

65.

The order of reactivity is

a)

HBr > HI > HCl

b)

HI > HBr >HCl

c)

HI > HCl > HBr

d)

HCl > HBr . HI

66.

Which one of the following is an electrophile

a)

NH3

b)

H2O

c)

BF3

d)

Cl2

67.

Tertiary alcohols are obtained by treating Grignard reagents with

a)

HCHO

b)

CH3CHO

c)

CH3COCH3

d)

CO2

68.

Methyl alcohol is not used as

a)

as a solvent

b)

as an antifreezing agent

c)

as a substitute for petrol

d)

for denaturing ethyl alcohol

69.

common name of 2-methyl-2chloropropane is

a)

iso-butyl chloride

b)

sec. butyl chloride

c)

ter butyl chloride

d)

n-butyl chloride

70.

Which enzyme is not involved in formation of starch

a)

zymase

b)

urease

c)

diastase

d)

invertase

71.

ketones are always reduced to

a)

primary alcohol

b)

secondary alcols

c)

aldehydes

d)

carboxylic acid

72.

Which one of the solvent is aprotic solvent

a)

H2O

b)

C2H5OC2H5

c)

CH3COOH

d)

C2H5OH

73.

The word polymer is of ......... origin

a)

India

b)

Greek

c)

China

d)

England

74.

Protein polymers are mad from.....

a)

Petroleum

b)

Ethylene

c)

amino acid

d)

Propylene

75.

Carbohydrate polymers include..

a)

Cellulose

b)

Lignin

c)

Chitin

d)

All of the above

76.

Find the odd one out

a)

DNA

b)

Silk

c)

Plastic

d)

enzymes

77.

The chemicals used in the reyon manufacturing are..

a)

Sodium hydroxide

b)

Carbon disulphide

c)

Diluted sulphuric acid

d)

All of the above

78.

Which one of the following is not the polyester?

a)

Polycot

b)

Polywool

c)

treeycot

d)

acrylic

79.

Ram placed hot water into an empty water bottle the water bottle keeps it shape and does not get softened. What type of plastic is the water bottle made from?

a)

Thermoplastic

b)

PVC

c)

Polyurethane

d)

Thermosetting

80.

which one of the following is not the thermoset plastic?

a)

PET

b)

Bakelite

c)

Melamine

d)

Vulcanized Rubber

81.

Which one of the following is the bioplastic?

a)

PET

b)

PVC

c)

PLA

d)

LDPE

82.

Raja is working with fire. He is advised not to wear clothes made of synthetic fibre.why?

a)

They are uncomfortable

b)

The melt on heating and cause heavy burns

c)

They do not absorb moisture

d)

They are shining and lustrous.

83.
How many carbon atoms are in propane
a)
1
b)
2
c)
3
d)
4
84.
What is the general formula of an alkane
a)
2n+2
b)
CnH2n+2
c)
CnH2n
d)
CnHn
85.
Hydrocarbons are compounds that contain
a)
Carbon, only
b)
Carbon and Hydrogen, only
c)
Carbon, Oxygen, and Hydrogen, only
d)
Carbon, Oxygen, Hydrogen, and Nitrogen, only
86.
Name this alkane
a)
Methane
b)
Ethane
c)
Propane
d)
Butane
87.
Name the compound.
a)
hexane
b)
2,3-dimethylbutane
c)
ethylbutane
d)
2,2-dimethylbutane
88.
Classify the compound based on the functional group present.
a)
alkane
b)
alkene
c)
alkyne
d)
aromatic
89.

Select the formula for the following name: Octene

a)

C8H16

b)

C8H14

c)

C8H18

d)

C8H15OH

90.
Which formula represents a saturated hydrocarbon?
a)
A
b)
B
c)
C
d)
D
91.
How many carbons are in the longest chain of the following molecule:
a)
11
b)
10
c)
9
d)
8
92.
What colour does bromine water turn in the presence of an alkene
a)
Orange
b)
Blue
c)
Colourless
d)
Green
93.

What is the observation obtained when alkene react with acidified KMnO4

a)

decolourize purple solution

b)

decolourize reddish brown solution

c)

decolourize blue solution

d)

yellow precipitate formed

94.

For a compound to be considered an organic compound it must contain

a)

Carbon

b)

Hydrogen

c)

Oxygen

d)

Nitrogen

95.

When heat is applied to a hydrocarbon and it melts, the energy is being used to...

a)

Break covalent bonds

b)

Overcome intermolecular forces

c)

Break a molecule

d)

Separate atoms

96.

What is a functional group?

a)

Group of atoms that give specific characteristics to a molecule

b)

Group of molecules that give specific characteristics to an atom

c)

Group of molecules that make up a group of atoms

d)

Group of atoms that give specific characteristics to an element

97.
Which formula represents an unsaturated hydrocarbon?
a)
A
b)
B
c)
C
d)
D
98.

Unsaturated molecules contain...

a)

A carbon to carbon double bond

b)

Only single bonds between carbon atoms

c)

A water molecule

d)

A hydroxyl group

99.

What is the chemical formula of an alkene that has 3 carbon atoms?

a)

C3H2

b)

C3H4

c)

C3H6

d)

C3H8

100.

What is the chemical formula of an alkane that has 1 carbon atom?

a)

C1H2

b)

C1H3

c)

C1H4

d)

C1H6

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