Chemistry Practice Tests 5 - PLS Academy

Chemistry Practice Test 5

Chemistry Practice Test 5 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 thermodynamics, chemical equilibrium, coordination compounds, and practical applications, helping students improve accuracy and problem-solving skills.

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1 / 100

Category: Chemistry Ch 7 Class 11

Two rocket fuels below are determined by their high performance.

N2H4(l) + O2(g) -> N2(g) + 2H2O(l) ΔH= -632 kJ

H2 (g) + ½ O2(g) -> H2O(l) ΔH = -286 kJ

If equal masses of hydrazine and hydrogen are used, which of the following has better performance?

NUMS 2019 Cancelled
Chemistry
Thermochemistry
Elimination Tool:

A) Hydrazine

B) Both have equal enthalpy of formation

C) Hydrogen gas

D) Cannot be compared

2 / 100

Category: Chemistry Ch 5 Class 11

Which of the following fundamental particles have the same mass/kg?

NUMS 2020
Chemistry
Atomic Structure
Elimination Tool:

A) Electron, neutrino

B) Electron, proton

C) Proton, neutrino

D) Neutron, proton

3 / 100

Category: Chemistry

Q.122 Glycoprotein is classified as

A. Simple protein

B. Conjugated protein

C. Derived protein

D. Non-conjugated protein

4 / 100

Category: Chemistry Ch 6 Class 12

What is NOT true about K2Cr2O7?

Blue crystalline solid

Not soluble in water

Strong oxidizing agent

Used in formation of lead chromate

5 / 100

Category: Chemistry Ch 6 Class 11

Down the group atomic radii increases due to?

Increase in screening effect

Repulsion between the electrons of valence shell

Increase in nuclear charge

All of these

6 / 100

Category: Chemistry Ch 4 Class 11

Gas is enclosed in a container of 20 cm3 with the moving piston. According to kinetic theory of gases, what will be the effect on freely moving molecules of the gas if temperature is increased from 20 C to 100 C?

UHS 2018
Chemistry
States of Matter – Gases, Liquids and Solids
Elimination Tool:

A) Pressure will become one half

B) Volume will be increased

C) Temperature has no effect on freely moving molecules

D) Colliding capability of molecule will become lower

7 / 100

Category: Chemistry

The carbonates of alkali metals are soluble in water except:

NUMS Mock 3
Chemistry
s and p Block Elements

A) K2CO3

B) Li2CO3

C) Na2CO3

D) Rb2CO3

8 / 100

Category: Chemistry

Formula of hydrogen peroxide

H202

H02

H302

9 / 100

Category: Chemistry Ch 7 Class 11

Which ion will have a maximum value of the heat of hydration?

PMC Practice 1
Chemistry
Thermochemistry
Elimination Tool:

A) Al+3

B) Cs+

C) Ba+

D) Mg+2

10 / 100

Category: Chemistry

An electron is suited midway between two parallel plates 0.5cm apart. One of the plates is maintained at a potential of 60 volts above the other. The force on the electron is (e=-1.6×10-19)

NUMS Mock 4
Physics
Electrostatics

A) 1.82×10-15 N

B) 3.00×10-16 N

C) 1.92×10-15 N

D) 3.00×10-15 N

11 / 100

Category: Chemistry Ch 1 Class 11

The total number of neutrons in 5g of H2O are:

1 NA = 6.023 x 1023

PMC Practice 18
Chemistry
Introduction to Fundamental Concepts of Chemistry
Elimination Tool:

A) 25 NA

B) 1.1 NA

C) 2.5 NA

D) 0.5 NA

12 / 100

Category: Chemistry Ch 10 Class 11

Standard Electrode Potential is measured at temperature:

348K

298K

20K

235K

13 / 100

Category: Chemistry Ch 10 Class 11

Hydrolysis means reaction with

PMC Sample 3
Chemistry
Electrochemistry
Elimination Tool:

A) Oxygen

B) Hydrogen

C) Water

D) Air

14 / 100

Category: Chemistry Ch 11 Class 12

Alkoxicies react with alkyl halide to form? a

Ether

Ester

Carboxylic acid

alcohol

15 / 100

Category: Chemistry Ch 3 Class 12

What is the chemical name of SANDUR?

Tetraplumbic oxide

Triplumbic oxide

Triplumbic tetraoxide

Lead dioxide

16 / 100

Category: Chemistry Ch 6 Class 12

Which of following transition complex will have most stable square planar structure?

(MnCI4)2-

PCI5

Cu(NI13)4)2-

(Co(N143)6)2-

17 / 100

Category: Chemistry

Both ionic and covalent bonds are present in:

NUMS Mock 3
Chemistry
Chemical Bonding

A) CH4

B) SO2

C) KCl

D) NaOH

18 / 100

Category: Chemistry Ch 3 Class 11

When gases expand, this causes:

Cooling

Heating

Remain constant

None

19 / 100

Category: Chemistry Ch 1 Class 11

X-ray work in 20th century shows that diameter of the atoms are of the order?

Chemistry
Introduction to Fundamental Concepts of Chemistry
Elimination Tool:

A) 1nm.

B) 2nm.

C) 3nm.

D) 4nm.

20 / 100

Category: Chemistry Ch 2 Class 12

The chemical name of the baking powder is:

NTS 2011
Chemistry
s and p Block Elements
Elimination Tool:

A) Sodium carbonate

B) Sodium bicarbonate

C) Sodium hydrogen carbonate

D) Sodium hydroxide

21 / 100

Category: Chemistry

Q.172 Dipole forces has direct relation with the

A. Chemical properties of a substance

B. Kinetic properties of substance

C. Thermodynamic properties of substance

D. Nature of substance

22 / 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.

23 / 100

Category: Chemistry

Q.123 Protein present in hides of animals is precipitated by

A. Tannic acid

B. Stearic acid

C. Oxalic acid

D. Acetic acid

24 / 100

Category: Chemistry

Q.78 Here DH° is enthalpy of

A. Combustion

B. Formation

C. Neutralization

D. Solution

25 / 100

Category: Chemistry Ch 11 Class 12

Which of the following is not a physical property of ethers?

NUMS 2019 Cancelled
Chemistry
Alcohols, Phenols and Ethers
Elimination Tool:

A) They are usually volatile liquids

B) Show weak hydrogen bonding

C) They are highly flammable with low boiling points

D) It is poisonous and is used as a disinfectant in hospitals

26 / 100

Category: Chemistry Ch 2 Class 12

The most dense element is:

NTS 2013
Chemistry
s and p Block Elements
Elimination Tool:

A) Li

B) K

C) Ca

D) Ba

27 / 100

Category: Chemistry Ch 12 Class 12

IUPAC name of propionaldehyde is:

Methanal

Acetaldehyde

Propanal

Butanal

28 / 100

Category: Chemistry Ch 2 Class 12

The nitrides of alkaline earth metals hydrolyse with water to form:

NUMS 2020
Chemistry
s and p Block Elements
Elimination Tool:

A) NH3

B) H2

C) N2

D) NO

29 / 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

30 / 100

Category: Chemistry Ch 4 Class 11

The rate of diffusion of hydrogen gas as compared to that of oxygen gas is:

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

A) 6 times

B) 4 times

C) one fourth

D) one eighth

31 / 100

Category: Chemistry Ch 11 Class 12

Which of the following compounds are added to ethanol to make it unfit for drinking?

PreMedPK MDCAT Mock 1
Chemistry
Alcohols, Phenols and Ethers
Elimination Tool:

A) Pyridine

B) Methanol

C) Acetone

D) All of these options are correct

32 / 100

Category: Chemistry Ch 1 Class 11

Different kinds of atoms of the same element are called isotope having different __________but same ___________ properties.

PMC Practice 1
Chemistry
Introduction to Fundamental Concepts of Chemistry
Elimination Tool:

A) Physical, atomic

B) Physical, chemical

C) Chemical, physical

D) Chemical, atomic

33 / 100

Category: Chemistry Ch 10 Class 11

During oxidation process, oxidation number of an element:

PMC 2020
Chemistry
Electrochemistry
Elimination Tool:

A) Decreases

B) Increases

C) Remains constant

D) Both decreases and increases

34 / 100

Category: Chemistry Ch 13 Class 12

If 2-butene is treated with KMnO4 the product formed will be:

Butanoic acid

Propanoic acid

Butyric acid

Acetic acid

35 / 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

36 / 100

Category: Chemistry Ch 8 Class 11

If Kc = 1, then reaction is:

At equilibrium

complete

Moves in forward direction

None of these

37 / 100

Category: Chemistry Ch 13 Class 12

Which of the following carboxylic acids is used in medicine as a local irritant?

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

A) Formic acid

B) Acetic acid

C) Benzoic acid

D) Amino acid

38 / 100

Category: Chemistry Ch 7 Class 12

Example of nucleophile is:

NUMS 2017
Chemistry
Fundamental Principles of Organic Chemistry
Elimination Tool:

A) BF3

B) SO3

C) AlCl3

D) CN

39 / 100

Category: Chemistry Ch 1 Class 12

Aqua regia can dissolve noble metal due to the formation of

NTS 2016 SMBBMC
Chemistry
Periodicity in Elements
Elimination Tool:

A) Nitrous acid

B) Nitric oxide

C) Nitrosyl chloride

D) Nascent nitrogen

40 / 100

Category: Chemistry

Q.100 I–I bond distance in case of gases iodine is

A. 271.5pm

B. 266.6pm

C. 4.9pm

D. 251.4ppm

41 / 100

Category: Chemistry Ch 4 Class 11

Vapor pressure of a liquid depends upon

) Nature of liquid

Temperature

Both a and b

Atomic Pressure

42 / 100

Category: Chemistry Ch 9 Class 11

If NaCl produced in the equation:

FeCl3+ NaOH → Fe(OH)3 + NaCl

175.5 g of NaCl was dissolved in water to make a liter of solution, the molarity would be:

NTS 2010
Chemistry
Solution and Colloids
Elimination Tool:

A) 0.1 M

B) 3 M

C) 8 M

D) 12 M

43 / 100

Category: Chemistry Ch 9 Class 12

Which of the following Is formula of Benzyl Alcohol?

C6H5CHO

C6H5CH202CC6H5

C6H5CH2OH

C5H5N

44 / 100

Category: Chemistry Ch 1 Class 12

7′ Period of the Periodic Table is:

Complete

Incomplete

Called Long Period

None of these

45 / 100

Category: Chemistry Ch 11 Class 11

Blue litmus turns red in a solution of PH

NUMS 2014
Chemistry
Acids, Bases and Salts
Elimination Tool:

A) Below 7

B) 7

C) Above 7

D) at all 7

46 / 100

Category: Chemistry Ch 1 Class 11

The atomic mass, molecular mass, ionic mass or formula mass of a substance expressed in grams is called:

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

A) Mole of a substance

B) Weight of substance

C) Mass of substance

D) Molar mass of substance

47 / 100

Category: Chemistry

Which of the following compounds is solid at room temperature?

NUMS Mock 2
Chemistry
Alcohols, Phenols and Ethers

A) Ethanol

B) Butane

C) Methanol

D) Phenol

48 / 100

Category: Chemistry Ch 4 Class 12

Hardness of transition metals is due to ______?

PMC Practice 6
Chemistry
d and f Block Elements
Elimination Tool:

A) More melting point

B) More electrons

C) Variable oxidation state

D) Higher binding energies

49 / 100

Category: Chemistry Ch 6 Class 11

Sigma bond is formed by:

NTS 2010
Chemistry
Chemical Bonding
Elimination Tool:

A) Transferring the electrons

B) Head-on overlapping of atomic orbitals

C) Mutual but unequal sharing of electrons

D) Parallel overlapping of atomic orbitals

50 / 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

51 / 100

Category: Chemistry Ch 11 Class 11

The rate of reaction:

PMC Sample 2
Chemistry
Reaction Kinetics
Elimination Tool:

A) Increases as the reaction proceeds

B) Decreases as the reaction proceeds

C) Remains unchanged

D) None of these options is correct

52 / 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

53 / 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

54 / 100

Category: Chemistry Ch 9 Class 12

Reduction of benzene is presence of Ni gives:

NUMS 2019 Cancelled
Chemistry
Hydrocarbons
Elimination Tool:

A) Cyclohexane

B) Heterocyclic

C) Alicyclic

D) Unsaturated aliphatic

55 / 100

Category: Chemistry Ch 5 Class 11

If an election jumps from 6th orbit to 2nd orbit then decrease in radius will be?

90%

60%

30%

20%

56 / 100

Category: Chemistry Ch 4 Class 12

The chemical name of K2[Zn(OH)4] is:

NTS 2019
Chemistry
d and f Block Elements
Elimination Tool:

A) Potassium tetrahydroxyzinc (II)

B) Potassium tetrahydroxozincate (II)

C) Potassium tetrahydroxyzincate (VI)

D) Potassium hydroxyzinc (II)

57 / 100

Category: Chemistry Ch 2 Class 11

Change in Pressure will only affect the substances which are in:

PMC Practice 4
Chemistry
Experimental Techniques in Chemistry
Elimination Tool:

A) Liquid state

B) Solid State

C) Plasma state

D) Gaseous State

58 / 100

Category: Chemistry Ch 14 Class 12

A catalyst catalyzes reaction by:

Providing new path for reaction

) Increasing activation energy

Reacting with the reactants

Producing free Ions

59 / 100

Category: Chemistry

Q.102 In electrochemical series reduction potential relates to only

A. Real Conditions

B. Standard Conditions

C. Positive Values

D. Negative Values

60 / 100

Category: Chemistry Ch 7 Class 11

Which of the following statements is NOT true for the first law of thermodynamics?

NTS 2014
Chemistry
Thermochemistry
Elimination Tool:

A) Total energy of the system and surrounding is conserved

B) Energy can neither be created nor destroyed

C) It is the same as law of conservation of energy

D) Total energy of the system is increasing

61 / 100

Category: Chemistry

Q.135 If pressure and volume of a gas are Variable while temperature remains constant, this belongs to

A. Charles's law

B. Boyle's law

C. Avogadro's law

D. Pascal's law

62 / 100

Category: Chemistry Ch 5 Class 11

How many electrons can have the values n=2, l=1, and s=+½ in the configuration 1s2, 2s2, 2p3?

NTS 2015 DUHS and JSMU
Chemistry
Atomic Structure
Elimination Tool:

A) 1

B) 3

C) 5

D) 7

63 / 100

Category: Chemistry Ch 4 Class 12

The colour of transition metal complexes is due to:

NTS 2019
Chemistry
d and f Block Elements
Elimination Tool:

A) d-d transition of electrons.

B) Paramagnetic nature of transition elements

C) Loss of s-electrons

D) Refraction phenomenon

64 / 100

Category: Chemistry Ch 14 Class 12

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

65 / 100

Category: Chemistry Ch 8 Class 12

Alkanes having five to seventeen carbon atoms per molecule are:

NTS 2013
Chemistry
Hydrocarbons
Elimination Tool:

A) liquids

B) solids

C) gases

D) semi solid wax

66 / 100

Category: Chemistry Ch 4 Class 12

Gas which has percentage equal to 78% In air Is the

Oxygen

Hydrogen

Carbon dioxide

Nitrogen

67 / 100

Category: Chemistry Ch 9 Class 12

What is the color of silver acetylide, AgC=CAg?

PMC Practice 2
Chemistry
Hydrocarbons
Elimination Tool:

A) Red

B) White

C) Brown

D) Pinkish

68 / 100

Category: Chemistry Ch 10 Class 11

Current in electrolysis is carried through:

PMC Sample 3
Chemistry
Electrochemistry
Elimination Tool:

A) Free electrons

B) Positive Ions

C) Negative Ions

D) Both B and C

69 / 100

Category: Chemistry

Q. 89 The number of formula units in 125g of hydrated copper sulphate (CuSO4.5H2O) are (Cu = 64, S = 32)

A. 6.023×1023

C. 1.2044×1024

B. 3.011×1023

D. 6.023×1022

70 / 100

Category: Chemistry Ch 1 Class 11

If 9.8 g of sulfuric acid is dissolved in excess quantity of water, it will yield ____ moles of hydrogen ion (H+) and _____ moles of sulphate ions (SO42-).

PMC Practice 7
Chemistry
Introduction to Fundamental Concepts of Chemistry
Elimination Tool:

A) 0.1, 0.2

B) 0.1, 0.3

C) 0.2, 0.4

D) 0.2, 0.1

71 / 100

Category: Chemistry Ch 13 Class 12

In IUPAC nomenclature, Carboxylic acids are named as_______?

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

A) Alkoxy acid

B) Alkanoic acid

C) Alkyl carboxylic acid

D) Alkoxylate acid

72 / 100

Category: Chemistry Ch 10 Class 12

Elimination from 2 – bromobutane results in:

NUMS 2018
Chemistry
Alkyl Halides and Amines
Elimination Tool:

A) Equimolar mixture of 1 and 2 – butene

B) Predominantly 2 – butene

C) Predominantly 1- butane

D) 2 – butyne

73 / 100

Category: Chemistry

Example of nucleophile is:

NUMS Mock 3
Chemistry
Fundamental Principles of Organic Chemistry

A) BF3

B) SO3

C) AlCl3

D) CN

74 / 100

Category: Chemistry Ch 6 Class 11

The number of sigma and pi bonds in 1-butene-3-yne?

NUMS 2015
Chemistry
Chemical Bonding
Elimination Tool:

A) 5 sigma and 5 pi

B) 7 sigma and 3 pi

C) 8 sigma and 2 pi

D) 6 sigma and 4 pi

75 / 100

Category: Chemistry Ch 6 Class 11

The order of force of repulsion between lone pairs and Bond pairs is?

NTS 2015 SMBBMC
Chemistry
Chemical Bonding
Elimination Tool:

A) Lone pair Bond -pair repulsion > lone pair lone pair repulsion> Bond pair Bond pair repulsion

B) Bond pair -Bond pair repulsion> lone pair lone pair repulsion> lone pair Bond pair repulsion

C) lone pair lone pair repulsion> Bond pair Bond pair repulsion> lone pair Bond pair repulsion

D) lone pair lone pair repulsion> lone pair Bond pair repulsion> Bond pair Bond pair repulsion

76 / 100

Category: Chemistry Ch 10 Class 12

Which alkyl halide has the lowest reactivity for a particular alkyl group?

NTS 2018
Chemistry
Alkyl Halides and Amines
Elimination Tool:

A) R-CI

B) R-F

C) R-Br

D) R-I

77 / 100

Category: Chemistry Ch 6 Class 12

Which element does not show magnetic properties?

78 / 100

Category: Chemistry

Q.6 The Relative atomíc mass of copper is

A. 63.345amu

B. 63.455amu

C.63.55 amu

D. 63.456

79 / 100

Category: Chemistry Ch 12 Class 12

Carbonyl group undergoes:

NUMS 2019 Reconduct
Chemistry
Aldehydes and Ketones
Elimination Tool:

A) Electrophilic addition reaction

B) Nucleophilic addition reaction

C) Electrophilic substitution reaction

D) Nucleophilic substitution reaction

80 / 100

Category: Chemistry Ch 6 Class 11

Which of the following has greatest electronegativity?

Cl2

Br2

81 / 100

Category: Chemistry Ch 10 Class 12

Which catalyst is used in the preparation of alkyl halide from alcohols?

PMC Sample 2
Chemistry
Alkyl Halides and Amines
Elimination Tool:

A) Zinc chloride

B) Pyridine

C) Sodium chloride

D) Thionyl chloride

82 / 100

Category: Chemistry Ch 9 Class 12

Stability of benzene is due to

Alternate double bonds

Electrons' cloud

Double bonds

Delocalization of electrons

83 / 100

Category: Chemistry Ch 14 Class 12

Polymerization is of how many types:

PMC 2021 Tested
Chemistry
Macromolecules
Elimination Tool:

A) Two

B) One

C) Three

D) Four

84 / 100

Category: Chemistry

In this reaction NH4* + H2O -> H3O*, the conjugate base of H3O+ ion is:

NUMS Mock 3
Chemistry
Chemical Equilibrium

A) NH4+

B) H2O

C) H*

D) NH3

85 / 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

86 / 100

Category: Chemistry

Q.161 Which one of the following has positive value?

A. Heat lost by the system

B. Work done on the system

C. Work done by the system

D. Positive AE when heat lost by the system

87 / 100

Category: Chemistry Ch 12 Class 12

Tincture of Iodine is:

NUMS 2015
Chemistry
Aldehydes and Ketones
Elimination Tool:

A) In alcohol with CHI3

B) In alcohol with I2

C) In ethanol and water mixture with KI and I2

D) In KI and CH3I

88 / 100

Category: Chemistry Ch 11 Class 12

Rectified spirits have a percentage of alcohol.

NUMS 2018
Chemistry
Alcohols, Phenols and Ethers
Elimination Tool:

A) 12 %

B) 24 %

C) 95 %

D) 100 %

89 / 100

Category: Chemistry Ch 1 Class 11

How many moles of S02 contain 16 grams of oxygen?

0.5

2.4

90 / 100

Category: Chemistry Ch 6 Class 11

Which theory deals with hybridization of orbitals?

VBT

MOT

VSEPR

None of these

91 / 100

Category: Chemistry Ch 11 Class 12

The method which is used on an industrial scale for production of alcohol from alkene is:

PreMedPK MDCAT Mock 2
Chemistry
Alcohols, Phenols and Ethers
Elimination Tool:

A) Hydrohalogenation of alkenes

B) Dehydration of alkenes

C) Hydration of alkenes

D) Hydroxylation of alkenes

92 / 100

Category: Chemistry Ch 1 Class 12

Number of elements in 6th period is:

93 / 100

Category: Chemistry Ch 3 Class 12

The octahedral geometry of the complex [Co(NH3)6]2+ has hybridization:

NUMS 2019 Reconduct
Chemistry
d and f Block Elements
Elimination Tool:

A) Sp3d

B) Spd6

C) Sp3d2

D) Sp2d3

94 / 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

95 / 100

Category: Chemistry Ch 3 Class 11

Which of the following is constant during an isothermal process?

Volume

Pressure

Temperature

Both b and c

96 / 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

97 / 100

Category: Chemistry

Q.25 In a pressure cooker, boiling point of water is_

A. Raised than the normal

B. Lower than the normal

C. Lower than the freezing point

D. All of these

98 / 100

Category: Chemistry Ch 6 Class 11

Every sp3 orbital is oriented in space In such a way that angle between them is:

109.5

104.5

120

180

99 / 100

Category: Chemistry Ch 6 Class 12

Which of the following Is the reason that Iron is the most abundant element?

Oldest metal

Binding energy

Less stability

Ferromagnetic

100 / 100

Category: Chemistry

Q.111 Evaporation is a process?

A. Exothermic

B. Spontaneous

C. Non-Spontaneous

D. None of these

Your score is

The average score is 55%

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