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Chemistry FLP-1

Total questions: 54

Worksheet time: 1hrs 21mins

Name
Class
Date
1.

How many number of moles in 100g of 1428 Si_{14}^{28}\ Si  

a)

2.56

b)

4.56

c)

3.56

d)

1.56

2.

Which of following is affected by surface area

a)

a) Evaporation

b)

b) Condensation

c)

c) Vapour pressure

d)

d) Both “A” and “B”

3.

Consider the reaction

the ΔDH will be

a)

+46.23 kJmol–1

b)

–46.23kJmol–1

c)

+92.46kJmol–1

d)

–92.46kJmol–1

4.

The best reducing agent is

a)

F -

b)

Br -

c)

Cl –

d)

I–

5.

If a plate of Cu is placed in aqueous solution of ZnSO4, then

a)

Cu will be oxidized

b)

Zn will be reduced

c)

Cu will be reduced

d)

No change occurs

6.

An acid with maximum Ka value is

a)

HF

b)

HCl

c)

HBr

d)

HI

7.

The element which has lowest melting point

a)

Beryllium

b)

Magnesium

c)

Calcium

d)

Strontium

8.

The ligand which is neutral as well as monodentate         

a)

Cl–

b)

NH3

c)

CN   −_{CN}^{\ \ \ -}  

d)

C2O 42−_4^{2^-}  

9.

[Fe(CO)5] shows one of the following geometry

a)

Octahedral

b)

Tetrahedral

c)

Square planar

d)

Trigonal bipyramidal

10.

Geometric isomerism is shown by

a)

1-Butene

b)

1-Hexene

c)

1-Chloro-2-bromopropene

d)

1, 1-dichloroethene

11.

The catalytic oxidation of methane produces all of the following except

a)

HCHO

b)

H2CO3

c)

CH3OH

d)

HCO2H

12.

Aqueous H2SO4 reacts with 2-methyl-but-1-ene to give predominantly

a)

2-methylbutane-1-ol

b)

Isobutylhydrogen sulphate

c)

2-methylbutane-2-ol

d)

Sec-butylhydrogen sulphate

13.

The alcohol reacts immediately with HCl + ZnCl2 to form oily layer is

a)

Primary alcohol

b)

Tertiary alcohol

c)

Secondary alcohol

d)

Trihydric alcohol

14.

The alcohol which is a dihydric but not a glycol

a)

Ethane-1, 2-diol

b)

Propane-1, 2-diol

c)

Butane-2, 3-diol

d)

Butane-1, 3-diol

15.

The Fehling solution reacts with aldehydes to give a red precipitate of

a)

CuO

b)

Cu2O

c)

CuSO4

d)

Cu2Cl2

16.

The compound which does not undergo idoform reaction

a)

Acetaldehyde

b)

Acetone

c)

Acetophenone

d)

Benzaldehyde

17.

The reaction of ethanoic acid with PCl5 gives                         

a)

CH3COCl, HCl

b)

CH3COCl only

c)

H3COCl, PCl3, Cl2

d)

CH3COCl, POCl3, HCl

18.

The ester which can impart pineapple flavour in food item

a)

Benzyl acetate

b)

Amylacetate

c)

Octyl acetate

d)

Ethyl butyrate

19.

Choose the weakest acid among the following

a)

Cl3CCOOH

b)

CH3CH2COOH

c)

(CH3)2CHCOOH

d)

ClCH2COOH

20.

Which alkaline earth metal does not react with H2O

a)

Mg

b)

Ca

c)

Ba

d)

Be

21.

Which one of the following are called coinage metals

a)

Cr, Mo, W

b)

Zn, Cd, Hg

c)

Cu, Ag, Au

d)

Ni, Pd, Pt

22.

Which property is not possessed by molecular crystalline solids

a)

Softness

b)

Transparency

c)

Volatility

d)

Electrical conductance

23.

Which of the following formula help us to determine number of orbitals in a sub shell

a)

2n2

b)

n-l

c)

n2

d)

2ℓ+1

24.

                       has dipole moment

a)

CO

b)

CO2

c)

Benzene

d)

All of these

25.

The thermodynamic property which is not a state function

a)

Entropy change

b)

Internal energy change

c)

Work done

d)

Enthalpy change

26.

The strongest reducing agent in electrochemical series is

a)

Li

b)

F

c)

K

d)

H

27.

Which of following is correct expression of KC for ammonia synthesis

a)

x2/V(a-x)

b)

4x2/V(a-x)

c)

4x2.V/(a-2x)2(b-x)

d)

4x2.V2/(a-x)(b-3x)3

28.

Hydrolysis of ethyl acetate in the presence of an acid catalyst has an order

a)

First

b)

Pseudo first

c)

Zero

d)

Second

29.

For the reaction   HCOOH  −−−→     x CO + H2OHCOOH\ \ _{---\rightarrow}^{\ \ \ \ \ x}\ CO\ +\ H_2O  , the X may be

a)

Al2O3

b)

Ni

c)

Cu

d)

Zn/Hg

30.

The skeletal formula of iso-octane (a compound with octane number =100) is

a)

A

b)

B

c)

C

d)

D

31.

Which of the following are isomers

a)

Ethanol and ethoxyethane

b)

Methonal and methoxymethane

c)

Prpanoic acid and ethylacetate

d)

Propionaldehyde and acetone

32.

Identify ‘Z’ in the series

a)

C2H5I

b)

CHI3

c)

CH3CH2OH

d)

CH3CHO

33.

In the reaction given below, if nucleophile is replaced by NH2−_{NH_2}^-  , then which is correct

a)

Reaction will be faster

b)

No change in reaction rate

c)

Reaction will be slower

d)

cannot predicted

34.

Reactivity order for HX in Lucas test

a)

HBr > HCl > HI

b)

HBr > HI > HCl

c)

HCl > HBr > HI

d)

HI > HBr > HCl

35.

What is expected percentage of products in the following reaction

a)

2-butene = 81%, 1-butene = 19%

b)

2-butene = 50%, 1-butene = 50%

c)

2-butene = 19%, 1-butene = 81%

d)

2-butene = 10%, 1-butene = 90%

36.

Ethyl bromide reacts with excess of NH3, the final product is formed

a)

Diethylamine

b)

Ethylamine

c)

Quaternary ethyl ammonium bromide

d)

Triethyl amine

37.

  Tertiary alcohols are resistant to oxidation. In the presence of acid dichromates they give _______

a)

Aldehydes

b)

Ketones

c)

Carboxylic acids

d)

Alkenes

38.

Alcohols are weakly acidic, even weaker than water. Most acidic alcohol is

a)

Methyl alcohol

b)

t-Butyl alcohol

c)

Ethyl alcohol

d)

Isopropyl alcohol

39.

Which of the following is more reactive

a)

Acetaldehyde

b)

2-pentanone

c)

Acetone

d)

Propionaldehyde

40.

Aldehydes and ketones react with 2, 4-DNPH to give        precipitate

a)

Yellow or blue

b)

Yellow or green

c)

Yellow or red

d)

Yellow or violet

41.

The carboxylic acid, which is not fatty acid

a)

Propanoic acid

b)

Ethanoic acid

c)

Steric acid

d)

Oxalic acid

42.

In non polar solvents like benzene the carboxylic acid exist as

a)

Monomers

b)

Cyclic polymers

c)

Polymers

d)

Cyclic dimers

43.

Which of the following is an unsaturated carboxylic acid

a)

malonic acid

b)

succinic acid

c)

oxalic acid

d)

maleic acid

44.

Although zero Kelvin is unattainable, but the minimum temperature achieved uptil now is

a)

10-5 K

b)

10-3 K

c)

10-2 K

d)

10-4 K

45.

Which among the following have triple bonds

(I) NO3-          (II) HCN         (III) CO          (IV) CH3CN

a)

A)  Only (I),(II) and (III)

b)

B)  Only (II),(III) and (IV)

c)

C) Only (I),(II) and (IV)

d)

D) Only (I),(III) and (IV)

46.

Which one of the following is not a coplanar molecule

a)

HCN

b)

C2H2

c)

C2H6

d)

C2H4

47.

When temperature of an exothermic reaction is increased then

a)

Rate of reaction is increased

b)

Energy of activation is decreased

c)

Rate of reaction is decreased

d)

Yield is increased

48.

The first four ionization energies values of an element are 284, 412, 656 and 3210 kJmol-1. The number of valence electrons in the element are

a)

One

b)

Two

c)

Three

d)

Four

49.

Which of the following forms colourless aqueous solution?

a)

Ti4+

b)

Fe3+

c)

Co3+

d)

Ni2+

50.

Acetone and propen –2–ol are

a)

Positional isomers

b)

Geometrical isomers

c)

Keto–enol tautomers

d)

Chain isomers

51.

Addition of which reagent to unsymmetrical alkenes obey Markownikoff rule

a)

HCl

b)

HCN

c)

HOCl

d)

All of these

52.

The alcohol which is most acidic

a)

CH3OH

b)

C2H5OH

c)

C3H7OH

d)

C4H9OH

53.

Which is not base catalyzed reaction of carbonyl compound like aldehyde

a)

Addition of NaHSO3

b)

Addition with HCN

c)

Haloform reaction

d)

Polymerization

54.

Which of the followings is the strongest acid

a)

ClCH2COOH

b)

Cl3CCOOH

c)

Cl2CHCOOH

d)

CH3COOH

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