Chemistry Practice Tests 3 - PLS Academy

Chemistry Practice Test 3

Chemistry Practice Test 3 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 organic chemistry, functional groups, hydrocarbons, and reactions of organic compounds, helping students improve accuracy and problem-solving skills.

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Chemistry Practice Test 3

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1 / 100

Category: Chemistry Ch 10 Class 11

Highest oxidation state of chlorine Is

-7

−1

2 / 100

Category: Chemistry Ch 4 Class 11

Which of the following is not a property of liquids:

No motion

Collision of molecules

Diffusion

All of these

3 / 100

Category: Chemistry

Q.87 O2-2 + 2H2O → 2H2O2, In this reaction O2-2 act as

A. Oxidizing agent

B. Reducing agent

C. Dehydrating agent

D. Drying agent

4 / 100

Category: Chemistry Ch 7 Class 12

Which of the following is/are organic?

Protein

Carbohydrates

Both a and b

None of these

5 / 100

Category: Chemistry Ch 4 Class 12

The ligand field effect splits five degenerate d-orbitals into two sets with different energies, the pair of high energy degenerate orbitals is:

NTS 2019
Chemistry
d and f Block Elements
Elimination Tool:

A) dxy, dyz

B) dyz, dzx

C) dx2 ,d

D) dx2 – y2, dy2

6 / 100

Category: Chemistry Ch 1 Class 11

One mole of Oxygen has number of atoms as compared to one mole of Nitrogen

equal

Half

Double

Quarter

7 / 100

Category: Chemistry Ch 3 Class 11

What is the volume in cm3 of 3.01 x 10^23 molecules of O2 gas at S.T.P.?

NTS 2017
Chemistry
States of Matter – Gases, Liquids and Solids
Elimination Tool:

A) 1000 cm3

B) 11000 cm3

C) 1120 cm3

D) 11200 cm3

8 / 100

Category: Chemistry Ch 3 Class 11

Matter changes from one state to another state on change in ___________.

NTS 2015 SMBBMC
Chemistry
States of Matter – Gases, Liquids and Solids
Elimination Tool:

A) density

B) pressure

C) viscosity

D) all

9 / 100

Category: Chemistry Ch 11 Class 12

Which of the following is an insecticide?

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

A) DDT

B) Teflon

C) Iodoform

D) Dynamite

10 / 100

Category: Chemistry Ch 4 Class 11

Which of the following shows H-bonding?

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

A) CH₃CH₂OH

B) CH₃-O-CH₃

C) CH₃CH₂Cl

D) All of these

11 / 100

Category: Chemistry

Which of the following gas, when ignited, burns with a blue flame and is not very soluble in water?

NUMS Mock 4
Chemistry
s and p Block Elements
Environmental Chemistry

A) O2

B) CO2

C) N2

D) He

12 / 100

Category: Chemistry Ch 5 Class 12

The reduction of which of the following produces Hydrofluoric acid?

a) XeF2

XeF4

Xe F6

All of the above

13 / 100

Category: Chemistry Ch 5 Class 11

Which of the following is the electronic configuration of 19K?

NUMS 2016
Chemistry
Atomic Structure
Elimination Tool:

A) 1s2, 2s2, 2p6, 3s2, 3p6, 4s2

B) 1s2, 2s2, 2p6, 3s2, 3p6, 3s2, 3d1

C) 1s2, 2s2, 2p6, 3s2, 3p6, 4s2, 3d5

D) 1s2, 2s2, 2p6, 3s2, 3p6, 4s1

14 / 100

Category: Chemistry Ch 1 Class 12

Metallic character of the elements:

NTS 2019
Chemistry
Periodicity in Elements
Elimination Tool:

A) decreases down the groups

B) increases down the groups

C) decreases across the periods

D) increases across the periods

15 / 100

Category: Chemistry Ch 13 Class 12

By treating CO2 with Grignard’s reagent, the following compound is obtained;

NUMS 2019 Cancelled
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) Aromatic compounds

B) Alcohols

C) Carboxylic acid

D) Ethers

16 / 100

Category: Chemistry Ch 2 Class 12

Which of the following elements has the highest boiling point?

NTS 2014
Chemistry
s and p Block Elements
Elimination Tool:

A) Li

B) Mg

C) Sr

D) Be

17 / 100

Category: Chemistry Ch 6 Class 11

Which of the following molecules have zero Dipole moments?

NTS 2011
Chemistry
Chemical Bonding
Elimination Tool:

A) CCl4

B) CO2

C) Cl2

D) C6H6

E) All of the above

18 / 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

19 / 100

Category: Chemistry Ch 14 Class 12

Disposable cups are made of a polymer ‘polystyrene’. Polystyrene is:

UHS 2019
Chemistry
Macromolecules
Elimination Tool:

A) A polyamide

B) A condensation polymer

C) An addition polymer

D) A polyester

20 / 100

Category: Chemistry Ch 2 Class 12

The false statement regarding saline hydrides is:

NTS 2014
Chemistry
s and p Block Elements
Elimination Tool:

A) They are formed from hydrogen and most electropositive element

B) They are used as reducing agents

C) They give H2 from H2O

D) They are ionic in nature

21 / 100

Category: Chemistry Ch 6 Class 11

Surface tension in a liquid is caused by?

NTS 2015 DUHS and JSMU
Chemistry
Chemical Bonding
Elimination Tool:

A) Lack of horizontal intermolecular forces

B) greater rate of evaporation at the surface than from the interior

C) reduced rate of intermolecular collisions at the surface

D) greater fluidity

22 / 100

Category: Chemistry Ch 14 Class 12

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

Glucose

Sucrose

Fructose

Cellulose

23 / 100

Category: Chemistry Ch 8 Class 11

At equilibrium, which of the following reactions is not affected by pressure?

NUMS 2016
Chemistry
Chemical Equilibrium
Elimination Tool:

A) ½ N2(g) + ½ O2 (g)⇌ NO(g)

B) PCl5(g) ⇌ PCl3(g) + Cl2(g)

C) 2NO2 (g) ⇌ N2O4(g)

D) SO2Cl2(g) ⇌ SO2(g) + Cl2(g)

24 / 100

Category: Chemistry Ch 7 Class 11

When two moles of H2 and one mole of O2 react to form H2O, 484 KJ heat is evolved. What is Δ Hf for one mole of H2O?

NUMS 2019 Reconduct
Chemistry
Thermochemistry
Elimination Tool:

A) -484 KJmol-1

B) -242 KJmol-1

C) -121 KJmol-1

D) +242 KJmol-1

25 / 100

Category: Chemistry Ch 9 Class 12

Stability of benzene is due to

Alternate double bonds

Electrons' cloud

Double bonds

Delocalization of electrons

26 / 100

Category: Chemistry Ch 2 Class 12

7) Gypsum supplies to soil

Carbon

Sulpuhr

Nitrogen

Calcium

Both b and d

27 / 100

Category: Chemistry Ch 5 Class 11

Diameter of Hydrogen atom is?

105.8 x 10-2 A

1.061 A

0.55 A

131.3 x 10-2A

28 / 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

29 / 100

Category: Chemistry Ch 9 Class 11

0.5 molar solution NaOH contains:

NUMS 2020
Chemistry
Solution and Colloids
Elimination Tool:

A) 40g NaOH in one dm3

B) 80g NaOH in one dm3

C) 10g NaOH in one dm3

D) 20g NaOH in one dm3

30 / 100

Category: Chemistry

Q.171 Which type of carboxylic acid is produced from the hydrolysis of nitriles?

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

31 / 100

Category: Chemistry Ch 11 Class 11

Half life period of the first order reaction depends upon:

NUMS 2015
Chemistry
Reaction Kinetics
Elimination Tool:

A) Initial concentration

B) Temperature

C) Catalyst

D) All of above

32 / 100

Category: Chemistry Ch 13 Class 12

Acetic acid is used in treatment of?

Ear canal Infection

Pneumonia

Abdominal pain

Vomiting

33 / 100

Category: Chemistry Ch 16 Class 12

Function of ozone Is?

To filter UV radiations

Act as a reducing agent

Act as an antibiotic

None of these

34 / 100

Category: Chemistry Ch 5 Class 11

Which orbitals always possess same energy:

Hybrid orbitals

Degenerate orbitals

None of these

Both a and b

35 / 100

Category: Chemistry Ch 1 Class 11

_______ is a macromolecule found in blood.

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

A) Hemoglobin

B) Plasma

C) Creatinine

D) Plasmids

36 / 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

37 / 100

Category: Chemistry Ch 14 Class 12

Teflon contains which of the following halide?

Chlorine

Bromine

Fluorine

All of these

38 / 100

Category: Chemistry Ch 1 Class 12

Smallest element in the periodic table is?

Hydrogen

Fluorine

Lithium

Uranium

39 / 100

Category: Chemistry

Q.132 Cyclic compounds consist of except?

A. Alicyclic

B. Aromatic

C. Acyclic compounds

D. Carbocyclic compounds

40 / 100

Category: Chemistry Ch 1 Class 12

Outer transition elements belong to

NTS 2013
Chemistry
Periodicity in Elements
Elimination Tool:

A) s-block

B) p-block

C) d-block

D) f-block

41 / 100

Category: Chemistry Ch 4 Class 11

Molecular solids are different from others because they

Are formed by only non-polar molecules

Have low melting point

Have high conductivity

Have high density

42 / 100

Category: Chemistry Ch 7 Class 12

How many chain isomers can be obtained from the alkane C6H14?

NTS 2016 DUHS & JSMU
Chemistry
Fundamental Principles of Organic Chemistry
Elimination Tool:

A) 7

B) 6

C) 5

D) 4

43 / 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

44 / 100

Category: Chemistry Ch 12 Class 12

Which of the following reagent is used to separate and purify carbonyl and non carbonyl compounds?

PreMedPK MDCAT Mock 3
Chemistry
Aldehydes and Ketones
Elimination Tool:

A) HCN

B) BrMgCH3

C) NaHSO3

D) H2O

45 / 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

46 / 100

Category: Chemistry Ch 3 Class 11

950 torr corresponds to:

NTS 2010
Chemistry
States of Matter – Gases, Liquids and Solids
Elimination Tool:

A) 3.5 atm

B) 1 atm

C) 3 atm

D) 1.25 atm

47 / 100

Category: Chemistry

Maximum number of electrons in a subshell is given by:

NUMS Mock 1
Chemistry
Atomic Structure

A) 2 (2l – 1)

B) 2 (2l + 1)

C) 2(l + 1)

D) 2l + 1

48 / 100

Category: Chemistry Ch 3 Class 12

Which one of the following ions exhibits d-d transition and paramagnetism as well?

NTS 2014
Chemistry
d and f Block Elements
Elimination Tool:

A) MnO4-

B) CrO42-

C) MnO42-

D) Cr2O72-

49 / 100

Category: Chemistry Ch 2 Class 11

C12H22O11+ conc. H2SO4—> 12 C + ? + H2SO4

NTS 2016 SMBBMC
Chemistry
Stoichiometry
Elimination Tool:

A) 11 H2O

B) 11 O2

D) 11 H2

C) 11 CO2

50 / 100

Category: Chemistry Ch 8 Class 12

Benzene in the presence of AlCl3 produces acetophenone when reacts with:

PreMedPK MDCAT Mock 4
Chemistry
Hydrocarbons
Elimination Tool:

A) Acetyl chloride

B) Acetic acid

C) Ethyl benzene

D) Ethanoic acid

51 / 100

Category: Chemistry

Q.137 SN reactions have which of the following specie formed and consumed in the reaction?

A. Transition state

B. Intemediate

C. Carbanion

D. Carbene

52 / 100

Category: Chemistry Ch 3 Class 12

The transition element which does not show variable valency is:

PMC 2020
Chemistry
d and f Block Elements
Elimination Tool:

A) Cu

B) Sc

C) Zn

D) Cr

53 / 100

Category: Chemistry

Q.9 The unit of electronegative is

A. Joule

B. Kilojoules

C. watt

D. no unit

54 / 100

Category: Chemistry Ch 9 Class 12

Which type of hybridization takes place in benzene?

Sp3

Sp2

Sp2 and Sp3

55 / 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

56 / 100

Category: Chemistry Ch 12 Class 12

Phenylmethyl ketone can be converted into ethyl benzene in one step by using:

NUMS 2016
Chemistry
Aldehydes and Ketones
Elimination Tool:

A) LiAlH4

B) Zn(Hg)-HCl

C) NaBH4

D) CH3MgI

57 / 100

Category: Chemistry Ch 7 Class 12

Study that deals with hydrocarbons and its derivatives Is known as:

Inorganic chemistry

Organic chemistry

Analytical chemistry

Physical chemistry

58 / 100

Category: Chemistry

Which of the following molecules has the largest number of shared pairs of electrons?

NUMS Mock 4
Chemistry
Chemical Bonding

A) C2H4

B) N2

C) CO2

D) NH3

59 / 100

Category: Chemistry Ch 7 Class 11

Burning of fuel is a

Endothermic

Exothermic

Both a & b

None of these

60 / 100

Category: Chemistry Ch 4 Class 11

To conduct electricity through Ionic Solids, the ions should be:

PMC Practice 5
Chemistry
States of Matter – Gases, Liquids and Solids
Elimination Tool:

A) Excited

B) Energized

C) Free

D) In random motion

61 / 100

Category: Chemistry Ch 1 Class 12

Which of the following has the least electron affinity value?

NUMS 2015
Chemistry
Periodicity in Elements
Elimination Tool:

A) 12 C 6

B) 14 N 7

C) 16 8 7

D) 19F 9

62 / 100

Category: Chemistry Ch 5 Class 11

Electronic configuration of K is:

NUMS 2014
Chemistry
Atomic Structure
Elimination Tool:

A) [Ar] 4s2

B) [Ar] 4s1

C) [Kr] 4s1

D) [He] 4s1

63 / 100

Category: Chemistry

Q.39 Which one of the following enthalpy change is always exothermic in nature?

A. Enthalpy of combustion

B. Enthalpy of solution

C. Enthalpy of formation

D. Enthalpy of atomization

64 / 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

65 / 100

Category: Chemistry

Ketones can be made by oxidation of:

NUMS Mock 2
Chemistry
Aldehydes and Ketones

A) Aldehydes

B) Primary Alcohols

C) Secondary Alcohols

D) Tertiary Alcohols

66 / 100

Category: Chemistry

Q.5 Allotropes are of same

A. Compounds

B. Molecules

C. Ions

D. Element

67 / 100

Category: Chemistry Ch 9 Class 11

Aqueous solutions of Iodine and Sodium hydroxide were mixed in a round bottom flask at 70 C. Following chemical reaction was carried out.

3I2 + 6 NaOH -> NaIO3 + NaI + H2O
This reaction is termed as;

UHS 2019
Chemistry
Solution and Colloids
Elimination Tool:

A) Redox reaction

B) Precipitation reaction

C) Substitution reaction

D) Free radical reaction

68 / 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

69 / 100

Category: Chemistry Ch 8 Class 12

Methane reacts with chlorine to form chloromethane. The catalyst used is?

NTS 2015 SMBBMC
Biology
Hydrocarbons
Elimination Tool:

A) Pb

B) Zn

C) HCl

D) Sunlight

70 / 100

Category: Chemistry

Q.178 Which type of bonds are break during cracking?

A. C-C

B.C-H

C. Both C-C and C-H

D. C-O

71 / 100

Category: Chemistry Ch 8 Class 11

For the following exothermic reaction, a decrease in temperature will shift the equilibrium towards: 2NO (g) + O2(g) -> 2NO2 (g)

NTS 2018
Chemistry
Chemical Equilibrium
Elimination Tool:

A) Left

B) The point of equilibrium

C) Both directions

D) Right

72 / 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

73 / 100

Category: Chemistry Ch 8 Class 12

Which among the following gives ppt. with terminal alkynyl hydrogen?

PreMedPK MDCAT Mock 4
Hydrocarbons
Elimination Tool:

A) Ammonical silver nitrate

B) Ammoniacal cuprous chloride

C) Both a and b

D) None of these

74 / 100

Category: Chemistry Ch 6 Class 11

Second Ionization energy of M atom

Higher than first ionization energy

Lower than first ionization energy

Very low

None of these

75 / 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 ____ mole of sulphate ions (SO4-2).

PMC Practice 26
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

76 / 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

77 / 100

Category: Chemistry Ch 16 Class 12

Which of the following is a water cleaning halogen?

78 / 100

Category: Chemistry Ch 7 Class 11

Exothermic Reactions heat is

PMC Sample 2
Chemistry
Thermochemistry
Elimination Tool:

A) Taken in

B) Give out to surroundings

C) Neither given nor lost

D) None of these

79 / 100

Category: Chemistry Ch 13 Class 12

Chemical formula of MaIonic Acid is?

C3H4O4

C4H4O4

C6H10O4

C5H10O4

80 / 100

Category: Chemistry Ch 1 Class 12

Which if the following has the greatest difference between it’s first and second ionization energies?

NUMS 2014
Chemistry
Periodicity in Elements
Elimination Tool:

A) Na

B) Ca

C) Mn

D) F

81 / 100

Category: Chemistry Ch 11 Class 12

14) Ethanol and Methanol can be separated by:

Cannizzaro's reaction

Iodoform test

b) Lucas Test

Tolien's test

82 / 100

Category: Chemistry

If concentration time graph of a reactant indicates a constant half life, then the order reaction with respect to that reactant is:

NUMS Mock 4
Chemistry
Reaction Kinetics

A) Zero order

B) Half order

C) Second order

D) First order

83 / 100

Category: Chemistry Ch 15 Class 12

cr. be used as a liquid fertilizer?

Ammonia

Potassium phosphate

Diammonium phosphate

urea

84 / 100

Category: Chemistry Ch 12 Class 12

Butanone on oxidation with K2Cr2O7 / H2SO4 forms:

NUMS 2020
Chemistry
Aldehydes and Ketones
Elimination Tool:

A) Acetic acid

B) Acetic acid & Ethane

C) Methane & Propanoic acid

D) Propanoic acid & Methanoic acid

85 / 100

Category: Chemistry Ch 11 Class 12

Which of the following compounds will give a secondary alcohol after reaction with NaBH4?

PreMedPK MDCAT Mock 3
Chemistry
Alcohols, Phenols and Ethers
Elimination Tool:

A) CH3COCH3

B) CH3COOCH3

C) CH3CH2CHO

D) CH3CH2COOH

86 / 100

Category: Chemistry Ch 10 Class 11

Zn can be deposited on iron by?

Galvanizing

Cathode Coating

Neutral suspension

All of these

87 / 100

Category: Chemistry Ch 9 Class 12

The carbon number of gasoline is:

NTS 2019
Chemistry
Hydrocarbons
Elimination Tool:

A) C5 – C6

B) C6 – C7

C) C5 – C10

D) C12 – C15

88 / 100

Category: Chemistry Ch 11 Class 11

What is the order of the following reaction:

2NO +O2 -> 2NO2

NTS 2019
Chemistry
Reaction Kinetics
Elimination Tool:

A) 0

B) 1

C) 2

D) 3

89 / 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

90 / 100

Category: Chemistry Ch 9 Class 11

Elevation of the boiling point is a ____ property.

PMC 2021 Tested
Chemistry
Solution and Colloids
Elimination Tool:

A) Colligative

B) None of these

C) Constitutive

D) Additive

91 / 100

Category: Chemistry Ch 3 Class 11

The stability of ionic crystal depends principally on:

NTS 2014
Chemistry
States of Matter – Gases, Liquids and Solids
Elimination Tool:

A) High electron affinity of anion forming species

B) Lattice energy of crystal

C) Low Ionization energy of cation forming species

D) Low heat of sublimation of cation forming solid

92 / 100

Category: Chemistry Ch 9 Class 12

Who rejected vital force theory

PMC Sample 3
Chemistry
Hydrocarbons
Elimination Tool:

A) Wohler

B) Berzelius

C) Wallus

D) Lyll

93 / 100

Category: Chemistry Ch 4 Class 11

Which one of the following has the highest lattice energy?

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

A) NaCl

B KCl

C) KBr

D) LiCl

94 / 100

Category: Chemistry Ch 10 Class 11

What is the cell reaction of

Zn(s) | Zn2+(aq) 1M | Ni2+(aq) 1M | Ni(s)

Zn2+(aq) + 2e- -> Zn(s), Eo = -0.76 V

Ni2+(aq) + 2e- -> Ni(s), Eo = -0.25 V

NUMS 2019 Cancelled
Chemistry
Electrochemistry
Elimination Tool:

A) Ni2++ Zn -> Zn2++ Ni

B) Zn2++ Ni -> Ni2++ Zn

C) Zn2++ Ni2+-> Zn + Ni

D) Zn + Ni -> Zn2++ Ni2+

95 / 100

Category: Chemistry Ch 5 Class 11

Which of the following does not have an inert gas configuration?

NUMS 2015
Chemistry
Atomic Structure
Elimination Tool:

A) Na+

B) Cu+

C) K+

D) S2-

96 / 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

97 / 100

Category: Chemistry Ch 7 Class 11

Enthalpy of a compound is equal to its

NUMS 2016
Chemistry
Thermochemistry
Elimination Tool:

A) Heat of combustion

B) Heat of formation

C) Heat of solution

D) Heat of dilution

98 / 100

Category: Chemistry Ch 7 Class 12

Which of the following is the correct IUPAC name?

NTS 2016 SMBBMC
Chemistry
Fundamental Principles of Organic Chemistry
Elimination Tool:

A) 3 – Ethyl – 4, 4-dimethylheptane

B) 4,4 – Dimethyl – 3 – ethylheptane

C) 5 – Ethyl – 4, 4 – dimethylheptane

D) 2, 3 – diethylheptane

99 / 100

Category: Chemistry Ch 12 Class 12

Consider the following reaction:

R―CHO + 2[Ag(NH3)2]OH → R―COONH4 + 2Ag + 2NH3 + H2O This reaction represents one of the following tests.

PreMedPK MDCAT Mock 1
Chemistry
Aldehydes and Ketones
Elimination Tool:

A) Fehling test

B) Benedict test

C) Ninhydrin test

D) Tollens test

100 / 100

Category: Chemistry Ch 2 Class 11

Which of the following is the safest way to dry crystals during crystallization?

Pressing between folds of paper

Boiling

Cooling

Vacuum desiccator

Your score is

The average score is 56%

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