Chemistry Practice Tests 3

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Chemistry Practice Test 3

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1 / 100

Category: Chemistry Ch 11 Class 11

For the reaction, A(g) -> products:

When the concentration of A(g) doubles, the rate of reaction increases four folds, which means it is:

PMC 2020
Chemistry
Reaction Kinetics
Elimination Tool:

A) Negative order reaction

B) First order reaction

C) Zero order reaction

D) Second order reaction

2 / 100

Category: Chemistry

Q.134 Why phenol is more acidic than Alcohol?

A. Due to presence oI resonance in phenol

B. Due to absence of resonance of in alcohol

C. Both A and B

D. Because in phenol His attach to O

3 / 100

Category: Chemistry Ch 2 Class 12

The ionization of Hydrogen atom gives:

NTS 2015 DUHS and JSMU
Chemistry
s and p Block Elements
Elimination Tool:

A) hydride ion

B) hydronium ion

C) proton

D) hydroxyl ion

4 / 100

Category: Chemistry Ch 8 Class 12

Formula of Thionyl chloride is

SCI3

S2Cl2

SOCl2

SOCI3

5 / 100

Category: Chemistry Ch 6 Class 11

Lithium and beryllium are unique in such a way that they have higher charge densities which produce strong polarizing effects due to:

NTS 2018
Chemistry
Chemical Bonding
Elimination Tool:

A) Non-metal

B) Solubility

C) Small Size

D) Large size

6 / 100

Category: Chemistry

Q.84 In BeCl2 the covalent bond is formed due to overlap if

A. sp–s

B. sp–p

C. sp2–p

D. sp3–s

7 / 100

Category: Chemistry Ch 13 Class 12

High molecular mass organic compounds, upon hydrolysis yield amino acids are called _______.

PMC Sample 3
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) Carbohydrates

B) Lipids

C) Proteins

D) DNA

8 / 100

Category: Chemistry Ch 10 Class 11

In electrochemical series, elements are arranged in order of their standard electrode potentials, the correct decreasing reactivity order for metals is:

NTS 2018
Chemistry
Electrochemistry
Elimination Tool:

A) Gold, silver, magnesium, aluminum

B) Mercury, calcium, sodium, magnesium

C) Sodium, aluminum, lead, copper

D) Potassium, silver, magnesium, aluminum

9 / 100

Category: Chemistry Ch 5 Class 11

The maximum number of electrons that an orbital can accommodate is/are:

NTS 2010
Chemistry
Atomic Structure
Elimination Tool:

A) 0

B) 1

C) 2

D) 3

10 / 100

Category: Chemistry Ch 14 Class 12

Teflon contains which of the following halide?

Chlorine

Bromine

Fluorine

All of these

11 / 100

Category: Chemistry Ch 2 Class 11

If the distribution co-efficient is small then the solute will:

Distribute itself equally

Flow down the mobile phase

Remain in mobile phase

Remain in stationary phase

12 / 100

Category: Chemistry Ch 3 Class 12

Transition Elements usually show:

NUMS 2015
Chemistry
d and f Block Elements
Elimination Tool:

A) Para magnetism

B) Diamagnetism

C) Ferromagnetism

D) Both Ferromagnetism and Paramagnetism

13 / 100

Category: Chemistry

Q.40 Octane number of n-heptane is____________?

A. 0

B. 100

C.40

D. 98

14 / 100

Category: Chemistry Ch 12 Class 12

What should be added to methane to produce HCN?

Ammonia

Nitrogen

Water

H+

15 / 100

Category: Chemistry Ch 3 Class 11

A graph between volume and temperature gives a straight line which cuts the temperature axis at:

NUMS 2020
Chemistry
States of Matter – Gases, Liquids and Solids
Elimination Tool:

A) 0 C

B) 273 C

C) 546 C

D) -273 C

16 / 100

Category: Chemistry Ch 11 Class 12

Which of the following is TRUE regarding Methyl Alcohol?

NTS 2011
Chemistry
Alcohols, Phenols and Ethers
Elimination Tool:

A) It is a colorless, volatile, thin liquid with specific gravity 0.796 at 15°C

B) It is used for low-temperature thermometers and as a fuel substitute

C) It is extensively used in the formation of different beverages

D) It is used as a base for perfumes

17 / 100

Category: Chemistry Ch 1 Class 12

A gas that reacts with CaO and not with NaHCO3 is:

NTS 2017
Chemistry
Periodicity in Elements
Elimination Tool:

A) CO2

B)CI2

C) O2

D) N2

18 / 100

Category: Chemistry Ch 11 Class 11

Sum of all the exponents of the molar concentration of the reactant present in the rate equation is known as:

NTS 2012
Chemistry
Reaction Kinetics
Elimination Tool:

A) Molecularity

B) Order of reaction

C) Rate of reaction

D) gradient

19 / 100

Category: Chemistry Ch 5 Class 11

If an electron makes a transition from 4th orbit to inner orbits, then the wavelength for which the radius is maximum, lies in which of the following series?

Lyman series

Paschen series

Brackett serie

Pfund series

20 / 100

Category: Chemistry Ch 7 Class 11

Born Haber cycle is used to determine:

PMC 2020
Chemistry
Thermochemistry
Elimination Tool:

A) Electron affinity

B) Lattice energy

C) Crystal energy

D) All of the above

21 / 100

Category: Chemistry Ch 4 Class 11

At 1489 mm of Hg, water will boil at:

NUMS 2019 Reconduct
Chemistry
States of Matter – Gases, Liquids and Solids
Elimination Tool:

A) 120 C

B) 110 C

C) 100 C

D) 90 C

22 / 100

Category: Chemistry Ch 10 Class 12

Reaction of CH3CH2MgBr with ethylene epoxide gives:

NUMS 2019 Reconduct
Chemistry
Alkyl Halides and Amines
Elimination Tool:

A) Ethanal

B) 1 – butanol

C) 2 – butanol

D) Butane

23 / 100

Category: Chemistry Ch 14 Class 12

The alloy Duralumin is composed of ______ of Al.

NTS 2018
Chemistry
Macromolecules
Elimination Tool:

A) 95%

B) 90%

C) 85%

D) 80%

24 / 100

Category: Chemistry

The osmotic pressure of equimolar solutions of BaCl2, NaCl and sucrose will be in the order:

NUMS Mock 1
Chemistry
Solution and Colloids

A) Sucrose > NaCl > BaCl2

B) Sucrose > BaCl2 > NaCl

C) NaCl > BaCl2 > Sucrose

D) BaCl2 > NaCl > Sucrose

25 / 100

Category: Chemistry Ch 11 Class 11

The rate of reaction is equal to the specific rate constant, when:

Concentration of reactants collectively is unity

Concentration of each of the reactants is unity

Either a or b

None of these

26 / 100

Category: Chemistry Ch 3 Class 12

Which one of the following is an acid?

H3BO3

Al(0H)3

Ca(0H)2

NaOH

27 / 100

Category: Chemistry Ch 13 Class 12

An ester is prepared by:

NUMS 2014
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) Two alcohols

B) Carboxylic acid and alcohol

C) Ketone and alcoho

D) Aldehyde and alcohol

28 / 100

Category: Chemistry Ch 2 Class 11

Equal weights of methane and hydrogen are mixed in an empty container at 25°C. The fraction of total pressure exerted by hydrogen is:

NTS 2013
Chemistry
Stoichiometry
Elimination Tool:

A) ½

B) 8/9

C) 1/9

D) 16/17

29 / 100

Category: Chemistry Ch 5 Class 12

Which of the following is a result of reaction between Iodine and Oxygen?

Iodine Hexaoxide

Iodine Pentaoxide

Iodine Dioxide

Iodine Heptaoxide

30 / 100

Category: Chemistry

Q.16 Actual yield is always less than theoretical yield due to

A. Operational losses

B. reaction reversibility

C. side reaction

D. all of these

31 / 100

Category: Chemistry Ch 11 Class 12

Which of the following process is not use for the preparation of alcohol?

Reaction of alkyl halide with Grignard reagent

Hydration of alkene

Reaction of Grignard reagent from aldehyde

From water gas

32 / 100

Category: Chemistry Ch 15 Class 12

Percentage of nitrogen by volume in air is:

UHS 2018
Chemistry
Environmental Chemistry
Elimination Tool:

A) 78%

B) 50%

C) 20%

D) 98%

33 / 100

Category: Chemistry

Q.37 In Lucas test, tertiary alcohols form oily layer of alkyl halid ________?

A. On heating

B. Immediately

C. After 5-10 minutes

D. After 20 minutes

34 / 100

Category: Chemistry

“The sum of all the exponents to which the molar concentration in terms in the rate equation are raised” defines:

NUMS Mock 2
Chemistry
Reaction Kinetics

A) Rate of reaction

B) Order of reaction

C) Type of reaction

D) Product of reaction

35 / 100

Category: Chemistry Ch 9 Class 11

What is the molality of 92 g toluene In 250 g benzene?

4 mol/kg

1 mol/kg

6mol/kg

3 mol/kg

36 / 100

Category: Chemistry Ch 8 Class 12

Physical properties of Ethyne is/are:

PreMedPK MDCAT Mock 3
Chemistry
Hydrocarbons
Elimination Tool:

A) It is colourless gas with a sweet smell.

B) It is sparingly soluble in water.

C) It is less dense than air.

D) It explodes on compression to a liquid because of unstable nature.

E) All of the above

37 / 100

Category: Chemistry

Which of the following will not undergo aldol condensation?

NUMS Mock 2
Chemistry
Aldehydes and Ketones

A) Acetaldehyde

B) Propanaldehyde

C) Benzaldehyde

D) Trideuteroacetaldehyde

38 / 100

Category: Chemistry Ch 7 Class 11

Value of heat capacity of water is

4.51 J/g

4.18 J/g

4.921J/g

4.21J/g

39 / 100

Category: Chemistry Ch 10 Class 11

which one of the following Is the oxidation number of Iodine in I2?

0

1

2

None

40 / 100

Category: Chemistry

Hydrolysis accompanied by bond cleavage is called

Hydrogenation

Hydration

Partial hydration

Hydrogenolysis

41 / 100

Category: Chemistry

Q.115 The crude petroleum is separated in fraction by

A. Filtration

B. Fractional distillation

C. Steam distillation

D. Fractional sublimation

42 / 100

Category: Chemistry Ch 10 Class 12

Which of the following is not a nucleophile?

NTS 2010
Chemistry
Alkyl Halides and Amines
Elimination Tool:

A) HO-

B) NH3

C) BF3

D) CN-

43 / 100

Category: Chemistry Ch 13 Class 12

To get the carboxylic acid containing C atoms less than C atoms in parent aldehyde we do hydrolysis of:

Cyanohydrins

Amino Acids

Esters

Amides

44 / 100

Category: Chemistry

Hydration energy of sodium Ion Is:

321 Kj/mol

406 Kj/mol

1032 kJ/mil

940 Kj/mol

45 / 100

Category: Chemistry

Sodium Benzoate on reacting with soda lime forms:

NUMS Mock 4
Chemistry
Carboxylic Acids and its Derivatives

A) Benzoic Acid

B) Benzene

C) Toluene

D) Benzaldehyde

46 / 100

Category: Chemistry

Q.165 Carboxylic acids are formed by the hydrolysis of_

A. Ester Nitriles

B. Nitriles, amines

C. Alkenes, Alkynes

D. Esters, Alcohols

47 / 100

Category: Chemistry Ch 12 Class 12

Ketones and aldehydes are reduced in the presence of catalyst:

Pd

Al203

R-Mg-X

SOCl2

48 / 100

Category: Chemistry Ch 11 Class 12

Boiling point of Ethyl Alcohol is?

20.2 C

100 C

80.1 C

78.3 C

49 / 100

Category: Chemistry Ch 8 Class 12

CH ≡ CH + 2AgNO3 -> AgC ≡ CAg + 2HNO3 represents _____ property of acetylene.

NTS 2012
Chemistry
Hydrocarbons
Elimination Tool:

A) basic

B) acidic

C) dehydrating

D) physical

50 / 100

Category: Chemistry Ch 1 Class 11

The _____ study of composition of pure substance in 17th century clearly shows that few elements are components of many substances

PMC Practice 29
Chemistry
Introduction to Fundamental Concepts of Chemistry
Elimination Tool:

A) qualitative

B) quantitative

C) both A & B

D) extensive

51 / 100

Category: Chemistry Ch 1 Class 12

Which of the following statements about H2S is false?

NTS 2017
Chemistry
Periodicity in Elements
Elimination Tool:

A) It is a covalent compound

B) It is a gas with bad smell

C) It is a stronger reducing agent than H2O

D) It is a weak base in water

52 / 100

Category: Chemistry Ch 5 Class 12

Which of the following halogen does not form stable oxyacids?

CI

F

Br

I

53 / 100

Category: Chemistry Ch 13 Class 12

What is the least number of carbon atoms in amino acids?

1

2

3

4

54 / 100

Category: Chemistry Ch 12 Class 12

Ketone reacts with Grignard reagent to form ______ in acidic media?

NTS 2015 SMBBMC
Chemistry
Aldehydes and Ketones
Elimination Tool:

A) Tertiary alcohol

B) isopropyl alcohol

C) primary alcohol

D) carboxylic acid

55 / 100

Category: Chemistry Ch 6 Class 11

H2S is an example of ______ hydride.

NTS 2012
Chemistry
Chemical Bonding
Elimination Tool:

A) Ionic

B) Covalent

C) Complex

D) Metallic

56 / 100

Category: Chemistry Ch 13 Class 12

Which type of carboxylic acid is produced from the hydrolysis of nitriles?

PMC Sample 2
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) Beta-hydroxy carboxylic acids

B) Acids having one carbon more than the starting material

C) Acids having one carbon less than the starting material

D) Alpha-hydroxy acids

57 / 100

Category: Chemistry

Q.124 Ethyne has which hybridization?

A. sp3

B.sp2

C. sp

D.sp^2d

58 / 100

Category: Chemistry

Q.169 The oxidation number of Nickel in [Ni(CO)A] is

A. 2

B. 8

C.6

D.4

59 / 100

Category: Chemistry Ch 13 Class 12

Acetic acid is used in curing of? b

Meat

Fish

Vegetables

Both a and b

60 / 100

Category: Chemistry Ch 8 Class 12

Which one of the following has the least C — C bond length?

Benzene

Ethane

Ethene

Ethyne

61 / 100

Category: Chemistry Ch 8 Class 12

How many chain isomers are shown by C5H12?

PreMedPK MDCAT Mock 4
Chemistry
Hydrocarbons
Elimination Tool:

A) 5

B) 4

C) 3

D) 2

62 / 100

Category: Chemistry Ch 8 Class 12

Which gas among the following can be dried by bubbling in H2S04?

Ammonia gas

HCI gas

Ethyne

Oxygen gas

63 / 100

Category: Chemistry Ch 10 Class 12

In the reaction of m- chlorotoluene with KNH2 in liquid NH3, the major product is:

NUMS 2016
Chemistry
Alkyl Halides and Amines
Elimination Tool:

A) O – toluidine

B) M – toluidine

C) P – toluidine

D) P – chloroanzr

64 / 100

Category: Chemistry Ch 3 Class 12

Aluminum silicate is used In:

Cement

Glass

Urea

None of these

65 / 100

Category: Chemistry

Q.32 vapor pressure is measured by calculating difference in liquid pressure and

A mercury pressure

B. glass pressure

C. atmospheric pressure

D. container pressure

66 / 100

Category: Chemistry

Q.29 Which one of them is used as an automobile anti free

A. Ethanol

B. ethene

C. ethylene glycol

D. propene

67 / 100

Category: Chemistry Ch 8 Class 11

A reaction with a tendency of occurring in forward and backward direction simultaneously is termed as

PMC Sample 1
Chemistry
Chemical Equilibrium
Elimination Tool:

A) Irreversible

B) Unidirectional

C) Multidirectional

D) Reversible

68 / 100

Category: Chemistry Ch 9 Class 11

In depression of freezing point, freezing constant Is divided by

Molarity

Molality

Molar fraction

All of these

69 / 100

Category: Chemistry Ch 11 Class 11

Common name of Octadecanoic acid is:

NTS 2016 DUHS & JSMU
Chemistry
Acids, Bases and Salts
Macromolecules
Elimination Tool:

A) Propionic acid

B) Stearic acid

C) Palmitic acid

D) Formic acid

70 / 100

Category: Chemistry Ch 15 Class 12

Which in not woody raw material

Poplar

) Hard wood

Fir

Rag

71 / 100

Category: Chemistry Ch 9 Class 11

Lowering of vapor pressure is directly proportional to?

Number of solute particles

Temperature

Chemical Formula

Number of solvent particle

72 / 100

Category: Chemistry Ch 11 Class 11

The rate of a chemical reaction is directly proportional to the product of active masses of the reactants, it is referred to as:

NTS 2018
Chemistry
Reaction Kinetics
Elimination Tool:

A) Law of conservation of energy

B) Law of mass action

C) Law of conservation of mass

D) Active mass law

73 / 100

Category: Chemistry Ch 7 Class 12

Which of the following is not an isomer of other three:

2,2-Dimethyl pentane

2-Methylhexane

2,3- Dimethyl pentane

2,2- Dimethyl butane

74 / 100

Category: Chemistry Ch 4 Class 11

Amorphous solids turns into glass like state from rubber like state, this is called

PMC Sample 1
Chemistry
States of Matter – Gases, Liquids and Solids
Elimination Tool:

A) transition

B) crack transition

C) glass transition

D) all of these

75 / 100

Category: Chemistry Ch 3 Class 11

When gases expand, this causes:

Cooling

Heating

Remain constant

None

76 / 100

Category: Chemistry

Who discovered positive rays (also called protons) and when?

NUMS Mock 4
Atomic Structure

A) Chadwick,1895

B) Goldstein,1886

C) Rutherford,1885

D) J.Perrin,1885

77 / 100

Category: Chemistry Ch 11 Class 12

Alkyl groups In ethers are connected by?

An oxygen atom

A carbon atom

A nitrogen atom

A benzene ring

78 / 100

Category: Chemistry Ch 9 Class 11

The reaction in which a molecule is broken down by Water is known as

Hydration

Salvation

Electrolysis

Hydrolysis

79 / 100

Category: Chemistry Ch 1 Class 12

Which orbitals take part in binding of transition elements

PMC Sample 1
Chemistry
Periodicity in Elements
Elimination Tool:

A) Outermost s orbital and p orbitals

B) Outermost d orbital and underlying half filled f-orbitals

C) Outermost p orbital and underlying half filled d-orbitals

D) Outermost s orbital and underlying half filled d-orbitals

80 / 100

Category: Chemistry Ch 1 Class 12

What are the products of the below-mentioned equation?

HNO3 +3HCI→

NTS 2019
Chemistry
Periodicity in Elements
Elimination Tool:

A) 2H2O + NOCI+Cl2

B) H2 + NOCI+ 2HOCI

C) H2O+ NOCI+ 2HCl

D) 2H2O+NOCI+ 2Cl

81 / 100

Category: Chemistry Ch 14 Class 12

Nylon-6,6 is also called:

UHS 2018
Chemistry
Macromolecules
Elimination Tool:

A) Poly styrene

B) Polyester

C) Polyamide

D) Polyvinyl alcohol

82 / 100

Category: Chemistry Ch 13 Class 12

Which one is the carbonyl protecting group?

Carboxylic acid

Ester

Alcohol

Amino Derivatives

83 / 100

Category: Chemistry

The color of transition metal complexes is due to transition of electrons between:

NUMS Mock 3
Chemistry
d and f Block Elements

A) p to d orbitals

B) d to d orbitals

C) p to p orbitals

D) d to p orbitals

84 / 100

Category: Chemistry Ch 5 Class 11

The maximum number of electrons in an atom with n=3 and l=2 is:

NUMS 2015
Chemistry
Atomic Structure
Elimination Tool:

A) 10

B) 6

C) 18

D) 0

85 / 100

Category: Chemistry Ch 11 Class 12

2-methyl 2-propanol is:

Secondary butyl alcohol

Tertiary butyl alcohol

Primary butyl alcohol

Quaternary butyl alcohol

86 / 100

Category: Chemistry Ch 14 Class 12

Polymer having a characteristics odour and mostly used as an adhesive material is

Polyvinyl chloride

Poly styrenec

Ploride

Polyvinyl acetate

87 / 100

Category: Chemistry Ch 9 Class 12

Friedel-Crafts Reaction can be used for the preparation of :

Toluene

Benzene

Phenol

pABA

88 / 100

Category: Chemistry Ch 14 Class 12

Polyester is used in:

PMC 2021 Tested
Chemistry
Macromolecules
Elimination Tool:

A) Cosmetic industry

B) Fabric industry

C) None of these

D) Food industry

89 / 100

Category: Chemistry Ch 15 Class 12

In the atmosphere, CO2is about?

NUMS 2018
Chemistry
Environmental Chemistry
Elimination Tool:

A) 0.01 %

B) 0.03 %

C) 0.05 %

D) 0.09 %

90 / 100

Category: Chemistry

Q.9 The unit of electronegative is

A. Joule

B. Kilojoules

C. watt

D. no unit

91 / 100

Category: Chemistry Ch 9 Class 11

6 g of urea is dissolved in 90 g of water. The relative lowering of vapour pressure is:

NUMS 2015
Chemistry
Solution and Colloids
Elimination Tool:

A) 0.02

B) 0.2

C) 0.002

D) 0.04

92 / 100

Category: Chemistry Ch 6 Class 11

Electronegativity is defined as the power of an atom in a molecule to

Repel electrons towards itself

Attract electrons towards itself

Expand itself

All of the above

93 / 100

Category: Chemistry Ch 15 Class 12

1500•degree Celsius furnace temperature Is maintained at which zone?

Heating

Burning

Decomposition

Roth b and c

94 / 100

Category: Chemistry Ch 9 Class 11

At 25 C, the equivalent conductance at infinite dilution of HCl solution is 425 ohm 1 cm 2 Equiv 1 while its specific conductance is 3.825 ohm 1 cm 1. If the apparent degree of dissociation is 90%, the normality of the solution is:

NUMS 2016
Chemistry
Solution and Colloids
Elimination Tool:

A) 0.9 N

B) 1.0 N

C) 1.1 N

D) 1.2 N

95 / 100

Category: Chemistry Ch 4 Class 11

How many atmospheres correspond to 1050 torr?

NTS 2019
Chemistry
States of Matter – Gases, Liquids and Solids
Elimination Tool:

A) 1.050

B) 10.38

C) 1.380

D) 2.760

96 / 100

Category: Chemistry Ch 2 Class 11

Given the reaction:

C3H6 + 5O2 → 3CO2 +4H2O

At STP, how many liters of O2 are needed to completely burn 5.0 liters of C3H6?

NTS 2010
Chemistry
Stoichiometry
Elimination Tool:

A) 5

B) 10

C) 10.5

D) 25

97 / 100

Category: Chemistry Ch 6 Class 11

Bond energy:

I. is the energy required to break a bond between two atoms in a diatomic molecule

II. Is taken as the energy released in forming a bond form free atoms

III. Is the measure of the strength of bond

NTS 2011
Chemistry
Chemical Bonding
Elimination Tool:

B) I and II only

C) I and IIII only

D) II only

E) I, II and III

98 / 100

Category: Chemistry Ch 6 Class 12

d-d transitions in transition metals gives?

Crystalline structure

characteristic color

Hardness

d) Higher reactivity

99 / 100

Category: Chemistry Ch 10 Class 11

In Balancing redox equation, the first thing is to:

PMC Sample 3
Chemistry
Electrochemistry
Elimination Tool:

A) Balance out the atoms on each side

B) Write the skeleton Equation

C) Calculate the oxidation Number

D) Identify the elements and their states

100 / 100

Category: Chemistry Ch 4 Class 12

Which transition metal is used the most in industries?

PMC 2021 Tested
Chemistry
d and f Block Elements
Elimination Tool:

A) Fe

B) Mg

C) Ca

D) C

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