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Chemistry FLP-2 Test

Total questions: 54

Worksheet time: 1hrs 21mins

Name
Class
Date
1.

There are 10 bowls in a refrigerator, each bowl has 1800g of ice in it. How many number of molecules of water in the all bowls placed in refrigerator

a)

6.02×1023

b)

6.02×1024

c)

6.02×1020

d)

6.02×1026

2.

An electron has magnetic quantum number as –3 what is its principal quantum number

a)

1

b)

2

c)

3

d)

4

3.

The data given below is for the reaction of NO and Cl2 and form NOCl at 295°C.

What is rate law

a)

k[NO][Cl2]

b)

k[Cl2]2[NO]

c)

k[Cl2] [NO]2

d)

k[Cl2]

4.

Addition of HBr to isobutylene mainly gives

a)

Iso-butyl bromide

b)

Ter-butyl bromide

c)

n-Butyl bromide

d)

Sec-butyl bromide

5.

Hydrocarbon X(C5H10) on oxidation with hot alkaline KMnO4 gives a mixture of propionic acid and acetic acid. The structure of compound X is

a)

CH3 – CH = CH – CH2 – CH3

b)

CH3 – C(CH3) = CH – CH3

c)

CH2 = CH – CH2 – CH2 – CH3

d)

CH3 – CH = CH – CH3

6.

Which of the following form MO2 type of oxide?

a)

Be

b)

Ca

c)

Mg

d)

Ba

7.

Which element react with hot water to form metallic oxide?

a)

Be

b)

Ca

c)

Mg

d)

Ba

8.

Which one of the following compound will give a precipitate of tri-iodomethane when reacted with iodine and aqueous NaOH

a)

C6H5CHO

b)

(CH3)3COH

c)

CH3CO2H

d)

CH3CH2CH(OH)CH3

9.

There are two compounds ‘A’ and ‘B’, both compounds react with liquid bromine. The compound B when reacts with liquid bromine it produces white coloured precipitates. The compound ‘A’ and ‘B’ are respectively

a)

Phenol and propene

b)

Ethene and phenol

c)

Alcohol and phenol

d)

Ethene and propene

10.
a)
b)
c)
d)
11.

Acetophenone and benzophenone can be distinguished by using

a)

Ammonical silver nitrate

b)

Alkaline cupric tartrate complex

c)

Sodium nitroprusside

d)

Alkaline iodine

12.

For which reaction enthalpy change will be negative

a)
b)
c)
d)
13.

The reduction potential of lead electrode (Pb+2 / Pb) is –0.13V. The reduction

potential of silver electrode (Ag+ / Ag) is +0.8V, which of the following cell reaction is correct

a)

Ag + Pb+2 → Ag+ + Pb

b)

Ag + 2Pb+1 →Ag+2 + 2Pb

c)

Ag+ + Pb →Ag + Pb+

d)

2Ag+ + Pb →2Ag + Pb+2

14.

Which has maximum deflection in magnetic field

a)

α\alpha  -particle

b)

Proton

c)

Electron

d)

Neutron

15.

A substance “X” has half life time of 30 minutes. How much time is required for conversion of 87.5% reactants into products

a)

30 minutes

b)

60 minutes

c)

90 minutes

d)

120 minutes

16.

In synthesis of ammonia the percentage of reactants in the equilibrium under optimum conditions are

a)

35%

b)

65%

c)

45%

d)

85%

17.

Benzene on treatment with propanoyl chloride in the presence of FeCl3 produces

a)

Ethyl phenyl ketone

b)

Methyl phenyl ketone

c)

n-propyl phenyl ketone

d)

Isopropyl phenyl ketone

18.

Ethene on treatment with Br2 in CCl4 give vicinal dihalide. Mechanism of reaction is

a)

Electrophilic substitution reaction

b)

Electrophilic addition reaction

c)

Nucleophilic substitution reaction

d)

Nucleophilic addition reaction

19.

Esters have fruity smell and are used as artificial flavours. Flavour of amyl butyrate is

a)

Apricot

b)

Jasmine

c)

Orange

d)

Banana

20.

In the presence of acidic K2Cr2O7. The compound “X” undergo elimination reaction to give 2-Methyl propene. The compound “X” will be

a)

1-Propanol

b)

2-Methyl-2-propanol

c)

2, 2-Dimethyl-1-propanol

d)

3-Methyl-1-butanol

21.

According to VBT a coordinate covalent bond is formed between

a)

Two half-filled orbital

b)

One half-filled and one empty orbital 

c)

One completely filled and one half-filled

d)

One completely filled and one empty orbitals

22.

In the reaction given below, the oxidized chlorine atom is present in

6NaOH + 3Cl2 → 5NaCl +  NaClO3+ 3H2O

a)

Cl2

b)

NaClO3

c)

NaCl

d)

NaClO

23.

The E°red of unknown electrode is +1.09 V and overall cell voltage is 1.5 V than what will be E°red of other electrode

a)

0.41

b)

2.59

c)

–0.41

d)

–1.09

24.

What will be internal energy change if in a reaction 50J heat releases and 20 J work done by the system

a)

+70

b)

–30

c)

+30

d)

–70

25.

Which of the following is lesser value for sodium chloride formation in Born-Haber cycle

a)

ΔHi of Na

b)

ΔHat of Na

c)

ΔHlatt of NaCl

d)

ΔHf of NaCl

26.

The maximum number of electrons with clock wise spin that can be accommodated in “N” shell is

a)

16

b)

32

c)

18

d)

8

27.

Which one of the following is not a coplanar molecule

a)

HCN

b)

C2H2

c)

C2H6

d)

C2H4

28.

Heat absorbed by the system at constant pressure is equal to

a)

∆E

b)

∆H

c)

∆T

d)

∆P

29.

Caloric value of fuel can be determined by

a)

Copper calorimeter

b)

Bomb calorimeter

c)

Glass calorimeter

d)

Flame calorimeter

30.

Which of the following is not a redox reaction

a)

CaCO3 → CaO + CO2

b)

O2 + 2H2 → 2H2O

c)

Na + H2O → NaOH + ½ H2

d)

MnCl3 → MnCl2 + ½Cl2

31.

The rate constant depends upon

a)

Half life period

b)

Temperature

c)

Activation energy

d)

Both B and C

32.

Alcohols have higher boiling points than their corresponding alkanes due to:

a)

Higher polarity

b)

Higher molar mass

c)

Ability to form hydrogen bonding

d)

All of these

33.

Number of covalent bonds in 3.6 g water

a)

6.2 × 1024

b)

1.2 × 1024

c)

2.4 × 1023

d)

1.8 × 1024

34.

Acetone and chloroform are soluble into each other due to

a)

Dipole-dipole interaction

b)

Intermolecular hydrogen bonding

c)

Debye forces

d)

London dispersion forces

35.

Which of the following molecule has net dipole moment

a)

CO2

b)

PF5

c)

BF3

d)

SO2

36.

Which one pair has same type of hybridization of central atom

a)

H2S, SO2

b)

BF3, SO3

c)

BF3, NH3

d)

CH3, BF3

37.

Which of the following has lowest pKa value

a)

Phenol

b)

Acetic acid

c)

Water

d)

Ethyl alcohol

38.

The reaction of C2H5OH with Na metal is example of                reaction

a)

Nucleophilic addition

b)

Nucleophilic substitution

c)

Electrophilic addition

d)

Electrophilic substitution

39.

The least volatile compound among the following is

a)

Br2

b)

CH3–O–CH3

c)

H2O

d)

C2H5OH

40.

When iodine is solidified

a)

Intermolecular distance increases

b)

Intra-molecular distance increases

c)

Force of attraction between molecules decreases

d)

Body centered cube is formed

41.

The total number of valence electrons for NH4+NH_4^{^+}   is

a)

8

b)

12

c)

16

d)

4

42.

Electronic configuration of atoms are given below identify the atom which has highest electron affinity

a)

1s2 2s2 2p4

b)

1s2 2s2 2p5

c)

1s2 2s2 2p6

d)

1s2 2s2 2p3

43.

Half-life of a              order reaction is doubled by doubling the initial concentration of reactants

a)

1st order

b)

3rd order

c)

2nd order

d)

Zero order

44.

What is the formula of tetraamminechloronitroplatinum(IV) sulphate

a)

[Pt(NH3)4 (NO2) ] SO4

b)

[Pt cl(NO2) (NH3)4 ] SO4

c)

[PtNO2 Cl (NO3) ] SO4

d)

[Pt(NH3)4 (NO2) Cl] SO4

45.

In ethanenitrile π and σ\sigma   bonds ratio is

a)

4:1

b)

1:5

c)

4:2

d)

2:5

46.

Bond angle between hybrid and unhybrid orbitals of sp2 hybridized carbonyl carbon is

a)

180°

b)

90°

c)

120°

d)

0°

47.

When ethanal is heated with Fehling solution it gives precipitate of

a)

CuO

b)

Cu2O2

c)

Cu2O

d)

Cu

48.

Reagent used to convert butanoic acid into amyl butyrate by the reaction of respective alcohol is

a)

conc. H2SO4

b)

LiAlH4

c)

NaOH

d)

NaBH4

49.

Heat of combustion of carbon to form carbon dioxide is also called

a)

Heat of formation of CO2

b)

Heat of atomization of carbon

c)

Heat of neutralization

d)

Heat of sublimation of carbon

50.

The value of enthalpy change of one mole of NaCl crystal formation from negative and positive ions is

a)

Greater than value of heat of formation NaCl

b)

Lesser than value of heat of atomization Na atom

c)

Equal to value of heat of formation of NaCl

d)

Lesser than value of heat of electron affinity of Cl

51.

For a reversible reaction at dynamic equilibrium position, the value of Kc increases with increase in temperature. The ΔH\Delta H   for the reaction would be

a)

Positive

b)

Zero

c)

Negative

d)

Cannot be predicted

52.

In which of the following arrangement, the order is not according to the property indicated against it

a)

I < F < Br < Cl

Electron affinity

b)

Li < Na < K < Rb

Atomic radius

c)

B < C < N < O

1st ionization energy

d)

Al+3 < Mg+2 < Na+ < K+ 

Ionic size

53.

The most easily removable hydrogen atom during dehydration of 2-Butanol in the presence of Conc. H2SO4 at 180°C.

a)

From carbon number 1

b)

From carbon number 2

c)

From carbon number 3

d)

From carbon number 4

54.

The strongest conjugate base is

a)

OH–

b)

C6H5O–

c)

CH3COO–

d)

C2H5O–

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