Chemistry Practice Tests 4 - PLS Academy

Chemistry Practice Test 4

Chemistry Practice Test 4 is designed to help students strengthen their understanding of key chemistry concepts, formulas, and reactions for competitive entry tests like MDCAT, NUMS, AKU, UET, ECAT, NTS, as well as FSC Board Exams. This test covers topics from electrochemistry, redox reactions, solutions, and molarity calculations, helping students improve accuracy and problem-solving skills.

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Chemistry Practice Test 4

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1 / 100

Category: Chemistry Ch 11 Class 11

The unit of the rate constant is the same as that of the rate of reaction in:

PMC 2020
Chemistry
Reaction Kinetics
Elimination Tool:

A) Zero order reaction

B) First order reaction

C) Second order reaction

D) Third order reaction

2 / 100

Category: Chemistry Ch 13 Class 12

The formula of esters is

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

A) R – COOH

B) R – COR

C) R – COOR

D) R – COH

3 / 100

Category: Chemistry Ch 11 Class 12

Which of the following is TRUE regarding Methyl Alcohol?

PreMedPK MDCAT Mock 3
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

4 / 100

Category: Chemistry Ch 7 Class 12

Ethers show the phenomenon of:

NTS 2019
Chemistry
Fundamental Principles of Organic Chemistry
Elimination Tool:

A) Position isomerism

B) Functional group isomerism

C) Metamerism

D) Cis-trans isomerism

5 / 100

Category: Chemistry Ch 11 Class 12

Which of the following reactions is used for the production of alcohols on industrial scale?

PreMedPK MDCAT Mock 5
Chemistry
Alcohols, Phenols and Ethers
Elimination Tool:

A) Hydrogenation of alkenes

B) Hydration of alkenes

C) Hydrohalogenation of alkenes

D) Hydroxylation of alkenes

6 / 100

Category: Chemistry Ch 12 Class 12

Which of the following does not give iodoform test?

NUMS 2014
Chemistry
Aldehydes and Ketones
Elimination Tool:

A) Ethanol

B) Ethanal

C) Acetophenone

D) Benzophenone

7 / 100

Category: Chemistry Ch 8 Class 12

Electrophile in sulphonation of benzene is:

PreMedPK MDCAT Mock 4
Chemistry
Hydrocarbons
Elimination Tool:

A) HSO4-

B) H2SO4

C) SO3

D) HSO3

8 / 100

Category: Chemistry Ch 8 Class 12

Benzene can be prepared from:

PreMedPK MDCAT Mock 2
Chemistry
Hydrocarbons
Elimination Tool:

A) From Petroleum

B) From Coal

C) From Acetylene

D) From Phenol

E) Al of these

9 / 100

Category: Chemistry Ch 4 Class 12

Paramagnetic elements contain:

NTS 2019
Chemistry
d and f Block Elements
Elimination Tool:

A) All paired electrons

B) All unpaired electrons

C) Few unpaired electrons.

D) Unequal electrons and protons

10 / 100

Category: Chemistry Ch 1 Class 11

The atoms of hemoglobin is heavier than H-atoms

PMC Practice 23
Chemistry
Introduction to Fundamental Concepts of Chemistry
Elimination Tool:

A) 67,000 times

B) 68,000 times

C) 65,000 times

D) 69,000 times

11 / 100

Category: Chemistry Ch 9 Class 12

The four bonds of carbon in methane are directed towards the corners of a:

NUMS 2014
Chemistry
Hydrocarbons
Elimination Tool:

A) Cube

B) Pentagon

C) Hexagon

D) Tetrahedron

12 / 100

Category: Chemistry Ch 11 Class 12

The test used to distinguish among primary, secondary, and tertiary alcohols is:

PreMedPK MDCAT Mock 4
Chemistry
Alcohols, Phenols and Ethers
Elimination Tool:

A) 2,4 – DNPH test

B) Tollens test

C) Lucas Test

D) Fehling solution test

13 / 100

Category: Chemistry Ch 1 Class 11

What will be the mass in grams of 12 gram atom of carbon atoms?

12.66 x 10^-24

1.66 x 10^-24

1.992 x 10^-23

2.660 x 10^-23

14 / 100

Category: Chemistry Ch 13 Class 12

Acetic acid derived from the word ‘Acetum’ which means_______?

PMC Sample 1
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) Acetic acid

B) Bitter

C) Citric

D) Vinegar

15 / 100

Category: Chemistry Ch 10 Class 11

X is a salt that decomposes in water.

What is the reason for its decomposition?
e-+ X3+→ X2+ Ecell= 1.91 V

NUMS 2018
Chemistry
Electrochemistry
Elimination Tool:

A) This potential oxidizes salt

B) This potential reduces salt

C) This potential reduces water

D) This potential oxidizes water

16 / 100

Category: Chemistry Ch 15 Class 12

cr. be used as a liquid fertilizer?

Ammonia

Potassium phosphate

Diammonium phosphate

urea

17 / 100

Category: Chemistry Ch 8 Class 11

Le Chatelier’s principle explains effect of all of the following except

Pressure

Temperature

Concentration

Time

18 / 100

Category: Chemistry Ch 6 Class 11

Which one of the following has the lowest % ionic character?

NTS 2016 DUHS & JSMU
Chemistry
Chemical Bonding
Elimination Tool:

A) CCl4

B) BCl3

C) BeCl2

D) LiCl

19 / 100

Category: Chemistry

The process of depositing a thin layer of expensive metals on ordinary or expensive metals is called:

NUMS Mock 2
Chemistry
Electrochemistry

A) Electroplating

B) Conductivity

C) Galvanizing

D) Metallurgy

20 / 100

Category: Chemistry Ch 13 Class 12

Acetic acid is used in curing of? b

Meat

Fish

Vegetables

Both a and b

21 / 100

Category: Chemistry Ch 11 Class 12

Which of the following is more soluble in water?

PMC Sample 1
Chemistry
Alcohols, Phenols and Ethers
Elimination Tool:

A) Ethanol

B) Phenol

C) Hexanol

D) Dimethyl ether

22 / 100

Category: Chemistry

Which of the following are the fundamental ways of transferring energy?

NUMS Mock 3
Chemistry
Thermochemistry

A) Pressure and work

B) Volume and pressure

C) Heat and work

D) Pressure and heat

23 / 100

Category: Chemistry Ch 9 Class 12

Boiling point of benzene is:

70.3

80.1

133

79.41

24 / 100

Category: Chemistry Ch 1 Class 12

Which of the following is not the use of bleaching powder?

NTS 2016 SMBBMC
Chemistry
Periodicity in Elements
Elimination Tool:

A) Sterilization of drinking water

B) Oxidation of alcohols

C) Bleaching Linen

D) Preparation of Chlorine

25 / 100

Category: Chemistry Ch 10 Class 11

Both a and c What is the oxidation number of S in SO2^(-2)?

— 6

26 / 100

Category: Chemistry

Q.76 Choose the incorrect statement

A. The unit of rate of reaction is mol dm–3s–1

B. The unit of rate constant depends on the order of reaction

C. Rate constant changes as the reaction proceeds

D. Rate of reaction changes with passage of time

27 / 100

Category: Chemistry Ch 10 Class 11

Standard reduction potential of F2, Br2 is:

+2.87, +1.08

+0.332, +2.87

-0.78, -1.66

None of the:

28 / 100

Category: Chemistry

Q.133 Metals look shiny as light falls on metal surface collide with mobile electrons and make them these electron gives light when

A. Neutral. Excited

B. Excited, de-excited

C. De-excited, excited

D. None of these

29 / 100

Category: Chemistry Ch 8 Class 11

If concentration of OH- Ions Is 0.1 molar. What Is the pH of the solution?

30 / 100

Category: Chemistry Ch 5 Class 11

Diameter of an atom is in the range of?

NUMS 2014
Chemistry
Atomic Structure
Elimination Tool:

A) 0.2m

B) 0.2 nm

C) 2 x 10^-19nm

D) 0.2 pm

31 / 100

Category: Chemistry

Q.79 Born-Haber cycle is used to determine the

A. Lattice energy

B. Enthalpy of formation

C. Enthalpy of ionization

32 / 100

Category: Chemistry Ch 5 Class 11

The quantum numbers +½ and -½ for the electron spin represent:

NTS 2017
Chemistry
Atomic Structure
Elimination Tool:

A) Rotation of the electron in clockwise and anticlockwise direction respectively

B) Rotation of the electron in anticlockwise and clockwise direction respectively

C) Magnetic movement of the electron pointing up and down respectively

D) Two quantum mechanical spin states which have no classical analogue

33 / 100

Category: Chemistry Ch 2 Class 12

Which one of the following is a common mineral of calcium? a

Feldspar

Limestone

Diamond

None of these

34 / 100

Category: Chemistry Ch 2 Class 12

Aqueous solution of Na2CO3is:

NTS 2011
Chemistry
s and p Block Elements
Elimination Tool:

A) Acidic

B) Alkaline

C) Both Acidic and Alkaline

D) Neutral

35 / 100

Category: Chemistry Ch 2 Class 12

Melting point of Group I-A elements is than Group II-A elements

Higher

lower

Same

Varies

36 / 100

Category: Chemistry Ch 14 Class 12

Which of the following is not a part of the human diet?

Glucose

Sucrose

Fructose

Cellulose

37 / 100

Category: Chemistry Ch 9 Class 12

How many chain isomers of Pentane is possible?

PMC Practice 1
Chemistry
Hydrocarbons
Elimination Tool:

A) Two

B) Four

C) Three

D) Five

38 / 100

Category: Chemistry

Catalytic hydrogenation of alkenes exhibits:

NUMS Mock 2
Chemistry
Hydrocarbons

A) Substitution reaction

B) Elimination reaction

C) Addition reaction

D) Condensation reaction

39 / 100

Category: Chemistry Ch 5 Class 11

Which of the following has the maximum number of unpaired electrons?

NUMS 2015
Chemistry
Atomic Structure
Elimination Tool:

A) Mg2+

B) V3+

C) Ti3+

D) Fe2+

40 / 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

41 / 100

Category: Chemistry Ch 14 Class 12

All are dehydrating agents for alcohols to produce alkene except:

NTS 2016 DUHS & JSMU
Chemistry
Macromolecules
Elimination Tool:

A) Al2O3

B) P2O5

C) Dilute H2SO4

D) H3PO4

42 / 100

Category: Chemistry Ch 7 Class 12

Select the organic compound which belongs to Arene family:

PMC 2020
Chemistry
Fundamental Principles of Organic Chemistry
Elimination Tool:

A) CH2 = CH2

B) CH3 – O – CH3

C) CH3 – NH2

D) C6H6

43 / 100

Category: Chemistry Ch 14 Class 12

The sugar unit in DNA molecule is:

NUMS 2019 Reconduct
Chemistry
Macromolecules
Elimination Tool:

A) Ribose

B) 2 – deoxyribose

C) 3 – deoxyribose

D) 2 – deoxypentose

44 / 100

Category: Chemistry Ch 4 Class 11

Which one Is not possible a)

Ionic crystal

Covalent crystal

Metallic crystal

Atomic-crystal

45 / 100

Category: Chemistry Ch 3 Class 11

According to the general gas equation, density of an ideal gas depends upon:

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

A) Pressure

B) Temperature

C) Molar Mass

D) All of these

46 / 100

Category: Chemistry Ch 2 Class 12

For Alkali Metals, decrease in the ionization potential is because of the increasing:

Charge on the nucleus

) Distance between nucleus and outer most electron

Size of the atom

None of these

47 / 100

Category: Chemistry Ch 2 Class 11

The empirical formula of Glucose C6H12O6 is:

PMC 2020
Chemistry
Stoichiometry
Elimination Tool:

A) C6H12O6

B) CHO

C) CH2O

D) CH2O2

48 / 100

Category: Chemistry

Q.122 An orbital can accommodate at the most______________electrons

A.2

B.14

C. 1

D. 6

49 / 100

Category: Chemistry Ch 1 Class 11

How many molecules are there in 2.1 moles of CO₂:

PMC 2021 Tested
Chemistry
Introduction to Fundamental Concepts of Chemistry
Elimination Tool:

A) 3.49 x 10⁻²⁴

B) 2.53 x 10²⁴

C) 1.26 x 10²⁴

D) 3.79 x 10²⁴

50 / 100

Category: Chemistry Ch 15 Class 12

When hexane dioic acid is heated with hexamethylene diamine, the compound formed is:

UHS 2011
Chemistry
Industrial Chemistry
Elimination Tool:

A) Polypeptide

B) Addition polymer

C) Ester

D) Nylon 6,6

51 / 100

Category: Chemistry Ch 9 Class 11

The pH of a solution can be kept constant by:

2022 PMC Test 2
Chemistry
Solution and Colloids
Elimination Tool:

A) saturated solution

B) super saturated solution

C) buffer solution

D) dilute solution

52 / 100

Category: Chemistry Ch 5 Class 11

Which of the following orbital will be filled first than 4p?

NUMS 2020
Chemistry
Atomic Structure
Elimination Tool:

A) 4s

B) 2p

C) 3d

D) 1s

53 / 100

Category: Chemistry Ch 5 Class 11

Quantum number values for ‘2p’ orbitals are:

PMC 2020
Chemistry
Atomic Structure
Elimination Tool:

A) n=2, l=1

B) n=1, l=2

C) n=1, l=0

D) n=2, l=0

54 / 100

Category: Chemistry Ch 14 Class 12

Left-handed helix in proteins secondary structure is called as ______ :

PMC Practice 4
Chemistry
Macromolecules
Elimination Tool:

A) Alpha helix

B) Beta helix

C) Spiral

D) Concentrate

55 / 100

Category: Chemistry Ch 11 Class 12

Phenol has all characters except?

Can be reduced to benzene

Insoluble in water

Acidic in nature

Used as a disinfectant

56 / 100

Category: Chemistry Ch 13 Class 12

Hydrolysis of acyl chloride results in the formation of:

PMC 2020
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) Acid anhydride

B) Carboxylic acid

C) Amides

D) Esters

57 / 100

Category: Chemistry Ch 6 Class 11

The raindrop acquires a spherical shape and ink spread over blotting paper due to:

NTS 2010
Chemistry
Chemical Bonding
Elimination Tool:

A) Surface tension

B) Adhesive forces

C) Viscosity

D) Polarity

58 / 100

Category: Chemistry

Water in solution acts as?

Acid

Base

May be acid or base

None of these

59 / 100

Category: Chemistry Ch 11 Class 12

With which of the following alcohols do not react to form alkyl halides?

HCl

SOCl2

Br2

PCl3

60 / 100

Category: Chemistry

Q.112 Which of the following alkyl halides undergoes SN1 reaction fastest?

A. methyl chloride

B. Isobutyl chloride

C. Tertiary butyl chloride

D. Ethyl chloride

61 / 100

Category: Chemistry Ch 8 Class 11

Le-Chatelier Principle is about

PMC Sample 3
Chemistry
Chemical Equilibrium
Elimination Tool:

A) Reaction Mixture

B) Reactants

C) Equilibrium Mixture

D) Products

62 / 100

Category: Chemistry Ch 1 Class 11

Mass of an atom ranges from?

PMC Practice 20
Chemistry
Introduction to Fundamental Concepts of Chemistry
Elimination Tool:

A) 1 x 10-28 kg to 1 x 10-22 kg

B) 1 x 10-26 kg to 1 x 10-23 kg

C) 1 x 10-27 kg to 1 x 10-24 kg

D) 1.6373 x 10-27 kg to 1 x 10-25 kg

63 / 100

Category: Chemistry Ch 1 Class 12

Which group of elements shows greatest electrical conductivity?

Alkali metals

Alkaline earth metals

Halogens

Coinage Metals

64 / 100

Category: Chemistry Ch 5 Class 11

The relationship between quantum number n and l is:

PMC 2020
Chemistry
Atomic Structure
Elimination Tool:

A) n = l – 1

B) l = n – 2

C) l = n – 1

D) n = l – 2

65 / 100

Category: Chemistry

Which of the following reagents will reduce butanoic acid to butanol?

NUMS Mock 1
Chemistry
Carboxylic Acids and its Derivatives

A) LiAlH4

B) LiAlH4.H2O

C) Mg(BH4)2

D) All of the above

66 / 100

Category: Chemistry Ch 15 Class 12

The essential property of a fertilizer is that is should be:

UHS 2018
Chemistry
Environmental Chemistry
Elimination Tool:

A) Immiscible

B) Highly soluble

C) Insoluble

D) Partially soluble

67 / 100

Category: Chemistry Ch 9 Class 12

Which one of the following is the correct structure of 2,2-Dimethylbutane?

PMC Sample 1
Chemistry
Hydrocarbons
Elimination Tool:

A) CH₃(CH₃)₂CCH₂CH₃

B) CH₃(CH₃)CCHCH₃

C) CH₃(CH₃)CCH₂CH₃

D) CH₃CH₂CH₂CH₃

68 / 100

Category: Chemistry

Which one of the following enthalpy changes is always exothermic?

NUMS Mock 4
Chemistry
Thermochemistry

A) Enthalpy of combustion

B) Enthalpy of formation

C) Enthalpy of atomization

D) Enthalpy of solution

69 / 100

Category: Chemistry Ch 2 Class 12

Commercial hydrogen is obtained from:

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

A) coal gas

B) oil gas

C) marsh gas

D) producer gas

70 / 100

Category: Chemistry Ch 6 Class 11

The number of bond(s) between carbon and nitrogen atoms in a Nitrile is:

NTS 2018
Chemistry
Chemical Bonding
Elimination Tool:

A) One sigma and one pi

B) Two sigma and one pi

C) Only sigma

D) One sigma and two pi

71 / 100

Category: Chemistry Ch 15 Class 12

“Zymase”- a group of 14 enzymes, used in the fermentation of starch, is present in:

NTS 2010
Chemistry
Chemistry of Life
Elimination Tool:

A) Bacteria

B) Yeast

C) Fungi

D) Algae

72 / 100

Category: Chemistry Ch 14 Class 12

Harmful and undesirable reaction of a metal when exposed to the atmosphere or any chemical agent is known as:

NTS 2010
Chemistry
Macromolecules
Elimination Tool:

A) Allotropy

B) Electroplating

C) Collision

E) Corrosion

73 / 100

Category: Chemistry Ch 1 Class 11

The break down of molecular ions from natural productsgive important information about?

Chemistry
Introduction to Fundamental Concepts of Chemistry
Elimination Tool:

A) Size

B) Position

D) Structure

C) Shape

74 / 100

Category: Chemistry Ch 4 Class 12

In rhombic sulphur there are atoms in each molecule?

75 / 100

Category: Chemistry

NaNO3 on heating gives:

NUMS Mock 3
Chemistry
Periodicity in Elements

A) O2

B) NO2

C) O2 + NO2

D) NaNO2 + O2

76 / 100

Category: Chemistry

Which of the following has maximum Hydration power?

NUMS Mock 3
Chemistry
Chemical Bonding

A) Na+

B) K+

C) Be2+

D) Ca+2

77 / 100

Category: Chemistry

Q.144 Carboxylic acids form dimer due to

A. Small Sizes

B. Polarity of C-O bond

C.H-bonding

D. Dipole-Dipole interactions

78 / 100

Category: Chemistry Ch 15 Class 12

Enzymes that are functioning within the cell are called:

NUMS 2016
Chemistry
Chemistry of Life
Elimination Tool:

A) Endoenzymes

B) Exoenzymes

C) Holoenzymes

D) Both A & C

79 / 100

Category: Chemistry Ch 1 Class 12

Triads were introduced by

Newland

Dobreiner

Mendeleev

Al-Razi

80 / 100

Category: Chemistry Ch 1 Class 12

Which statement is true about electron affinity?

NUMS 2020
Chemistry
Periodicity in Elements
Chemical Bonding
Elimination Tool:

A) The value of electron affinity is always positive

B) The value of electron affinity is always negative

C) The value of first electron affinity is always positive

D) The value of first electron affinity is always negative

81 / 100

Category: Chemistry Ch 1 Class 12

Which one of the following is acidic?

B(OH)3

Ca(OH)2

Mg(OH)3

NaOH

82 / 100

Category: Chemistry Ch 15 Class 12

Unpolluted rain water has a pH of:

UHS 2013
Chemistry
Environmental Chemistry
Elimination Tool:

A) 4.9

B) 5.6

C) 5.3

D) 7.0

83 / 100

Category: Chemistry Ch 1 Class 12

The false statement about lithium is:

NTS 2013
Chemistry
Periodicity in Elements
Elimination Tool:

A) It is softer than other alkali metals

B) It is least reactive

C) It possesses higher melting and boiling points

D) It forms chloride which is soluble in alcohol

84 / 100

Category: Chemistry Ch 13 Class 12

Which of the following is used as coagulation for latex in rubber industry

Acetic acid

Amino acid

Ethyl alcohol

Rayon

85 / 100

Category: Chemistry Ch 2 Class 12

When Gypsum is heated to about 100° C, it losses some water of crystallization and becomes:

NTS 2011
Chemistry
States of Matter – Gases, Liquids and Solids
s and p Block Elements
Elimination Tool:

A) Epsom salt

B) Kieserite

C) Plaster of Paris

D) Bleaching Powder

86 / 100

Category: Chemistry Ch 11 Class 12

Higher order alcohols

Have more than 1 carbon

have more than 3 carbons

Have more than 2 carbons

Have more than 4 carbons

87 / 100

Category: Chemistry Ch 7 Class 11

What is the measure of activation energy in an endothermic reaction?

UHS 2019
Chemistry
Thermochemistry
Elimination Tool:

A) The energy of activation of backward reaction is less than that of forward reaction

B) The energy of activation of backward reaction is more that that of forward reaction.

C) The energy of activation of forward reaction is less than that of backward reaction.

D) The energy of activation of forward – backward reaction is same.

88 / 100

Category: Chemistry Ch 8 Class 12

Acetylene with Cl2 gives:

1, 2-dicholropropane

1, 1, 2, 2-tetrachloroethane

Ethane dichloride

1, 1, 2, 2-tetrachloromethene

89 / 100

Category: Chemistry Ch 4 Class 11

Effusion of gases take place through a hole with:

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

A) Hole dimensions

B) Infinite dimensions

C) Slit like dimensions

D) Molecular dimensions:

90 / 100

Category: Chemistry

Q.155 In proteins the H bonding is present between

A.C-H

B. N-H

C.0-H

D. Cl-H

91 / 100

Category: Chemistry Ch 3 Class 11

CO2 and SO2 both are tri-atomic molecules but heat of vaporization of SO2 is greater than that of CO2 due to:

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

A) High electronegativity of S

B) Greater size of SO2

C) SO2 is polar and CO2 is non-polar

D) SO2 is more acidic than CO2

92 / 100

Category: Chemistry Ch 2 Class 12

Point out the property which is not characteristic of alkali metal:

NUMS 2014
Chemistry
s and p Block Elements
Elimination Tool:

A) Low electronegativity

B) Low melting point

C) Their ions are isoelectronic with noble gas

D) High ionization energy

93 / 100

Category: Chemistry

Q.92 Change in Pressure will only affect fhe.substances which are in

A. Liquid stale

B. Solid State

C.Plasma state

D. Gaseous State

94 / 100

Category: Chemistry Ch 13 Class 12

Which of the following is an example of aromatic carboxylic acid?

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

A) Ethanoic acid

B) Butanoic acid

C) Adipic acid

D) Phthalic acid

95 / 100

Category: Chemistry Ch 10 Class 11

Which one among the following is the strongest reducing agent:

Fe2++ 2e -> Fe (-0.44V)

Sn2++ 2e -> Sn (-0.14 V)

Ni2++ 2e -> Ni (0.25 V)

Fe3++ e -> Fe2+(-0.77 V)

NUMS 2018
Chemistry
Electrochemistry
Elimination Tool:

A) Fe3+

B) Ni

C) Fe2+

D) Sn

96 / 100

Category: Chemistry Ch 4 Class 12

The correct electronic configuration of Cr is:

PMC Practice 4
Chemistry
d and f Block Elements
Elimination Tool:

A) [Ar] 4s23d4

B) [Ar] 4s23d5

C) [Ar] 4s13d4

D) [Ar] 4s13d5

97 / 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

98 / 100

Category: Chemistry Ch 8 Class 12

Which metal is used to form alkanes from alkyl halides?

Both a and b

None of these

99 / 100

Category: Chemistry Ch 11 Class 12

Primary, Secondary Tertiary alcohols can be distinguished by Lucas test in which .. appear

oily Layer

Brown color

Both a and b

None of these

100 / 100

Category: Chemistry Ch 11 Class 11

In a reversible reaction, catalyst lowers the action energy of the:

NUMS 2020
Chemistry
Reaction Kinetics
Chemical Equilibrium
Elimination Tool:

A) Forward reaction

B) Reverse reaction

C) Forward as well as reverse reaction

D) Forward reaction but increases that of the reverse reaction

Your score is

The average score is 57%

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