Chemistry Practice Tests 4

NET Practice

Chemistry Practice Test 4

1 / 100

Category: Chemistry Ch 7 Class 11

Transfer of heat from hot surroundings to a cold refrigerator is an example of:

NUMS 2014
Chemistry
Thermochemistry
Elimination Tool:

A) Spontaneous reaction

B) Non-Spontaneous reaction

C) First law of thermodynamics

D) All of the above options are correct

2 / 100

Category: Chemistry Ch 2 Class 12

Which of the following statements is true?

NUMS 2014
Chemistry
s and p Block Elements
Elimination Tool:

A) Alkali metal hydroxides are stable to heat except LiOH

B) CaOH is a stronger base than NaOH

C) When NaOH is made the gas released at the cathode is C12

D) NaOH is named as caustic soda because it reacts with fats to form soap.

3 / 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

4 / 100

Category: Chemistry Ch 4 Class 11

Which of the following is the correct equation to calculate relative molecular mass of a gas.

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

A) M = mPR / VT

B) M = PV / mRT

C) M = mPRT / V

D) M = mRT / PV

5 / 100

Category: Chemistry Ch 8 Class 12

Which one of these is/are gasses?

Methane

Ethane

Propane

All of these

6 / 100

Category: Chemistry Ch 3 Class 11

When gases expand, this causes:

Cooling

Heating

Remain constant

None

7 / 100

Category: Chemistry Ch 8 Class 11

Equilibrium constant has no units if?

The number moles are same on both sides of the chemical equation

The number of moles is different on both sides.

The number of moles is greater in the product

If the rate of reaction is constant

8 / 100

Category: Chemistry Ch 9 Class 11

Ca(OH)2 is sparingly soluble having solubility value 6.5 x 10-6. What’ll be its solubility:

UHS 2017 Reconduct
Chemistry
Solution and Colloids
Elimination Tool:

A) 2.75 x 10-2

B) 2.75 x 102

C) 1.17 x 10-2

D) 3.63 x 103

9 / 100

Category: Chemistry Ch 4 Class 11

if the crystal structure of Graphite is Hexagonal, the crystal system of Diamond will be:

Tetrahedral

Pyramidal

Cubic

Pentagonal

10 / 100

Category: Chemistry

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

NUMS Mock 3
Chemistry
Alcohols, Phenols and Ethers

A) CH3COCH3

B) CH3COOCH3

C) CH3CH2CHO

D) CH3CH2COOH

11 / 100

Category: Chemistry

Q.28 Fuels with higher octane number can be produce by_________?

A. Cracking

B. Reforming

C. Decomposition

D. Isomerisation

12 / 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

13 / 100

Category: Chemistry Ch 8 Class 11

According to the law of mass action, “The rate of chemical reaction” is proportional to the:

NTS 2010
Chemistry
Chemical Equilibrium
Elimination Tool:

A) The amount of product formed

B) Product of the molar concentration of reactants

C) The initial concentration of reactants

D) Catalyst

14 / 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

15 / 100

Category: Chemistry

Down the group acid-base behaviour of metallic oxides of group 2 elements changes to:

NUMS Mock 2
Chemistry
s and p Block Elements

A) More basic

B) No change

C) Less basic

D) More acidic

16 / 100

Category: Chemistry Ch 3 Class 11

Pressure remaining constant, at which temperature volume of gas will become twice to the volume at 0 C?

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

A) 546 C

B) 200 C

C) 546 K

D) 273 K

17 / 100

Category: Chemistry

The common features, among the species CN, CO and NO are:

NUMS Mock 3
Chemistry
Chemical Bonding

A) Bond order three and Isoelectronic

B) Bond order three and weak field ligands

C) Bond order two andπacceptors

D) Isoelectronic and weak field ligands

18 / 100

Category: Chemistry Ch 8 Class 12

Which of the following compounds possesses a single covalent bond between carbon and hydrogen?

PreMedPK MDCAT Mock 5
Chemistry
Hydrocarbons
Elimination Tool:

A) CH4

B) C2H2

C) C2H4

D) All of the above

19 / 100

Category: Chemistry Ch 9 Class 12

C6H5 Is:

Phenyl

Methyl

Ethyl

Hexyl

20 / 100

Category: Chemistry Ch 10 Class 12

Order of the reactivity of halogens during halogenation of alkanes is:

NUMS 2019 Reconduct
Chemistry
Alkyl Halides and Amines
Elimination Tool:

A) Cl2 > I2 > Br2

B) Br2 > I2 > Cl2

C) I2 > Cl2 > Br2

D) Cl2 > Br2 > I2

21 / 100

Category: Chemistry Ch 10 Class 12

The order of reactivities of the following alkyl halides for an SN2 reaction is:

NUMS 2016
Chemistry
Alkyl Halides and Amines
Elimination Tool:

A) RF > RCl > RBr > RI

B) RF > RBR > RCl > RI

C) RCl > RBr > RF > RI

D) RI > RBr > RCl > RF

22 / 100

Category: Chemistry Ch 11 Class 12

How are carboxylic acids formed from alcohol?

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

A) Hydrolysis

B) Reduction

C) Oxidation

D) Protonation

23 / 100

Category: Chemistry Ch 5 Class 11

The correct order of orbitals is:

1s,2s,2p,3s, 3p, 4s, 3d, 4p, 5s

1s,2s,2p,3s, 3p, 3d, 31, 4s, 5d

1s,2s,2p,3s, 3p, 3d, 4p, 4s, 5s

1s,2s,2p,3s, 3p, 4s, 4p, 4d, 5s

24 / 100

Category: Chemistry

Which statement is true about electron affinity?

NUMS Mock 2
Chemistry
Periodicity in Elements
Chemical Bonding

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

25 / 100

Category: Chemistry Ch 4 Class 11

Which one of the following is an example of covalent solid?

NaCI

Diamond

Mercury

All of these

26 / 100

Category: Chemistry Ch 9 Class 12

Acetylene polymerizes to make:

PMC Sample 3
Chemistry
Hydrocarbons
Elimination Tool:

A) Cyclohexane

B) Benzene

C) Hexane

D) Toluene

27 / 100

Category: Chemistry Ch 13 Class 12

Chemical formula of Malonic acid: b) CEI-11206
a) C3H804

C3H8O4

C2H204

C6H12O6

C3H4O4

28 / 100

Category: Chemistry Ch 8 Class 12

How many chain isomers are shown by C5H12?

NTS 2018
Chemistry
Hydrocarbons
Elimination Tool:

A) 5

B) 4

C) 3

D) 2

29 / 100

Category: Chemistry Ch 16 Class 12

Treatment of water which is very effective in killing of pathogens is:

Aeration

Coagulation

Landfill

Chlorine usage

30 / 100

Category: Chemistry Ch 3 Class 12

Aluminum reacts with H2SO4 to produce

Al2(S04))

SO3

SO2

Al

31 / 100

Category: Chemistry Ch 10 Class 11

Oxidation is defined as:

) loss of electron

Gain of electron

Gain of oxygen

Both a and c

32 / 100

Category: Chemistry Ch 8 Class 12

Catenation is a process in which carbon shows the properties of:

NTS 2010
Chemistry
Hydrocarbons
Elimination Tool:

A) Making single bond

B) Hybridization

C) Making chains or rings of carbon atoms

D) Isomerism

33 / 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

34 / 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

35 / 100

Category: Chemistry Ch 2 Class 12

What is the chemical formula for plaster of Paris?

NTS 2010
Chemistry
s and p Block Elements
Elimination Tool:

A) CuSO4. 5H2O

B) 2CaSO4. 2H2O

C) (CaSO4)2 H2O

D) MgSO4. 7H2O

36 / 100

Category: Chemistry Ch 9 Class 12

Which of the following method is used to prepare Ethylene glycol from ethene?

PMC Practice 1
Chemistry
Hydrocarbons
Elimination Tool:

A) Dehydration

B) Hydroxylation

C) Hydration

D) Luca's test

37 / 100

Category: Chemistry Ch 14 Class 12

Which of the following can he used as a source of energy

Lipids

Carbohydrates

Both a and b

None of these

38 / 100

Category: Chemistry Ch 11 Class 11

For a reaction 2A + 3B -> C
The rate law expression is given by rate = K [A]1[B]2. The order of the reaction with respect to A, B and overall order of reaction are:

NUMS 2015
Chemistry
Reaction Kinetics
Elimination Tool:

A) 2, 1, 3

B) 1, 2, 3

C) 0, 1, 2

D) 2, 1, 0

39 / 100

Category: Chemistry Ch 9 Class 11

Molarity is defined as the number of moles of any substance dissolved:

UHS 2011
Chemistry
Solution and Colloids
Elimination Tool:

A) Per dm3 of water

B) In one gram of water

C) Per m3 of water

D) In 100 ml of water

40 / 100

Category: Chemistry Ch 13 Class 12

Acetic acid is used in treatment of?

Ear canal Infection

Pneumonia

Abdominal pain

Vomiting

41 / 100

Category: Chemistry

Q.35 Instantaneous dipole is produced when

A. Two polar molecules come closer

B. Two non-polar molecules comes closer

C. Polar and nonpolar molecule comes closer

D. All of these

42 / 100

Category: Chemistry Ch 8 Class 11

The equation N2(g)+ 3H2(g)⇋ 2NH3(g)represents:

PMC 2020
Chemistry
Chemical Equilibrium
Elimination Tool:

A) Contact process

B) Haber’s process

C) Solvay process

D) Avogadro’s Law

43 / 100

Category: Chemistry Ch 3 Class 11

If we take some water at 0oC and start heating it,we find that in the temperature range 0oC to 4oC:

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

A) It expands on heating

B) It contracts on heating

C) Both

D) None

44 / 100

Category: Chemistry Ch 1 Class 11

In mass spectrometry, ionization occurs in form.

Solid

Liquid

Vapor

No ionization occurs during the process.

45 / 100

Category: Chemistry Ch 11 Class 11

A catalyst is a substance which:

NUMS 2017
Chemistry
Reaction Kinetics
Elimination Tool:

A) Stops the reaction

B) Decreases the rate of reaction

C) Alters the rate of reaction

D) Increases the rate of reaction

46 / 100

Category: Chemistry Ch 4 Class 11

All the collisions between the particles of gases are elastic in nature. What is meant by “Elastic Collisions”?

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

A) No change in the total kinetic energy

B) The velocity of the molecules changes

C) No change in potential energy during the collisions

D) No change in mass during the collisions

47 / 100

Category: Chemistry Ch 3 Class 11

The compression factor (compressibility factor) for one mole of a Van der Waals gas at 0 and 100 atmosphere pressure is found to be 0.5. Assuming that the volume of gas molecule is negligible, calculate the Van der Waals constant ‘a’.

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

A) 1.254

B) 2.87

C) 3.76

D) 1.34

48 / 100

Category: Chemistry Ch 2 Class 12

Oxygen does not react with:

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

A) P

B) Na

C) S

D) Cl

49 / 100

Category: Chemistry Ch 9 Class 12

If both double and triple bonds are present in the chain, double bond is given the ______

PMC Sample 2
Chemistry
Hydrocarbons
Elimination Tool:

A) Higher number

B) Lower Number

C) Priority

D) Second position

50 / 100

Category: Chemistry Ch 4 Class 12

Which one of the following Is a vulcanizing agent?

Sodium

Iron

Sulphur

Potassium

51 / 100

Category: Chemistry Ch 5 Class 11

The ground state of an atom corresponds to a state of :

NTS 2016 DUHS & JSMU
Chemistry
Atomic Structure
Elimination Tool:

A) Maximum energy

B) Minimum energy

C) Negative energy

D) Positive energy

52 / 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

53 / 100

Category: Chemistry Ch 7 Class 11

Heat of vaporization of water is kcal/kg

574

674

474

364

54 / 100

Category: Chemistry Ch 4 Class 12

Ligands having two lone pair of electrons for donation to the central transition metal ion are known as:

UHS 2018
Chemistry
d and f Block Elements
Elimination Tool:

A) Polydentate ligands

B) Monodentate ligand

C) Bidentate ligands

D) Hexadentate ligands

55 / 100

Category: Chemistry Ch 15 Class 12

The gas which is mainly produced in landfills from the waste is:

UHS 2016
Chemistry
Environmental Chemistry
Elimination Tool:

A) CH4

B) CO2

C) SO2

D) Cl2

56 / 100

Category: Chemistry

Q.72 Isopentane is an example of_

A. Aromatic compounds

B. Branched chain compound

C. Alicyclic compounds

D. None of these

57 / 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

58 / 100

Category: Chemistry Ch 5 Class 11

Nitrogen and phosphorus have 3 of their valence electrons unpaired because of:

NTS 2014
Chemistry
Atomic Structure
Elimination Tool:

A) Auf bau principle

B) Heisenberg's principle

C) Hund’s rule

D) Planck’s statement

59 / 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

60 / 100

Category: Chemistry Ch 9 Class 12

Alkenes undergo:

UHS 2019
Chemistry
Hydrocarbons
Elimination Tool:

A) Electrophilic Addition

B) Electrophilic substitution

C) Nucleophilic substitution

D) Nucleophilic addition

61 / 100

Category: Chemistry Ch 5 Class 11

A 4s orbital has:

NUMS 2014
Chemistry
Atomic Structure
Elimination Tool:

A) One node

B) Two nodes

C) three nodes

D) O nodes

62 / 100

Category: Chemistry Ch 9 Class 12

Physical properties of Ethyne is/are:

NTS 2015 DUHS and JSMU
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

63 / 100

Category: Chemistry Ch 6 Class 11

The geometry of H2S and its dipole moment are:

NTS 2016 DUHS & JSMU
Chemistry
Chemical Bonding
Elimination Tool:

A) Angular and non – zero

B) Angular and zero

C) Linear and zero

D) Linear and non – zero

64 / 100

Category: Chemistry

Thermochemistry is very important to learn about _______.

NUMS Mock 3
Chemistry
Thermochemistry

A) Chemical Equilibrium

B) Chemical Bonding

C) Heat contents of a compound

D) AlI of these options are correct

65 / 100

Category: Chemistry Ch 5 Class 11

Which of the following best describes the emission spectrum of atomic hydrogen?

NTS 2015 DUHS and JSMU
Chemistry
Atomic Structure
Elimination Tool:

A) a discrete series of lines of equal intensity and equally spaced with respect to wavelength equally

B) a series of only four lines

C) a continuous emission of radiation of all frequencies

D) several discrete series of lines with both intensity and spacings between lines decreasing as the wavenumber increases with each series.

66 / 100

Category: Chemistry Ch 10 Class 12

Which of the following has the strongest bond?

NUMS 2019 Cancelled
Chemistry
Alkyl Halides and Amines
Elimination Tool:

A) CH3 – F

B) CH3 – I

C) CH3 – Cl

D) CH3 – Br

67 / 100

Category: Chemistry Ch 13 Class 12

What is correct order of acidic strength?

Carboxylic acid > alcohols > phenol > water

Carboxylic acid > phenol > water > alcohol

Water > alcohol > carboxylic acid > phenol

Phenol > alcohol > water > carboxylic acid

68 / 100

Category: Chemistry

Which of the following atoms would be diamagnetic?

Ne

O

Al

K

69 / 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

70 / 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%

71 / 100

Category: Chemistry Ch 3 Class 11

When does a gas deviate the most from its ideal behavior ?

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

A) At low pressure and high temperature

B) At high pressure and high temperature

C) At low pressure and low temperature

D) At high pressure and low temperature

72 / 100

Category: Chemistry Ch 11 Class 11

Half-life of an element is 5 days. If we have 50,000 of its atoms, then how many atoms would be left after 10 days?

15000

25000

50000

None of these

73 / 100

Category: Chemistry Ch 2 Class 11

Silver oxide decomposes when heated to silver and oxygen. If 0.5 moles of lunar caustic is heated up to 450 degrees, giving out Nitrogen dioxide and oxygen leaving silver as metal, what is the mass of the residue?

NTS 2015 SMBBMC
Chemistry
Stoichiometry
Elimination Tool:

A) 108 grams

B) 54 grams

C) 216 grams

D) 27 grams

74 / 100

Category: Chemistry Ch 9 Class 11

The formula of Plaster of Paris is:

NTS 2017
Chemistry
Solution and Colloids
Elimination Tool:

A) (CaSO4).1/2H2O

B) (CaSO4).5H2O

C) (CaSO4).7H2O

D) (CaSO4).9H2O

75 / 100

Category: Chemistry Ch 7 Class 12

Proton transfer within a molecule is known as:

Position isomerism

Tautomerism

Metamerism

Isomerism

76 / 100

Category: Chemistry Ch 8 Class 12

Which type of isomerism depends on the distribution of carbon atoms on each side of the functional group?

PreMedPK MDCAT Mock 1
Chemistry
Hydrocarbons
Elimination Tool:

A) Structural isomerism

B) Functional isomerism

C) Chain isomerism

D) Metamerism

77 / 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

78 / 100

Category: Chemistry Ch 8 Class 11

If 4.6 gm of ethyl alcohol and 6.0 gm of acetic acid is kept at a constant temperature until equilibrium was established, 2.0 gm of unused acetic acid were present. What is the Kc?

NTS 2016 SMBBMC
Chemistry
Chemical Equilibrium
Elimination Tool:

A) 2.0

B) 3.0

C) 4.0

D) 5.0

79 / 100

Category: Chemistry Ch 5 Class 11

Electronic configuration of M2+ ion is 2, 8, 14 and its atomic weight is 56 amu. The number of neutrons in its nucleus are:

NTS 2017
Chemistry
Atomic Structure
Elimination Tool:

A) 30

B) 32

C) 42

D) 52

80 / 100

Category: Chemistry Ch 1 Class 11

Which of the following represents Empirical Formula of Glucose?

CH2O

CHO

C2H0

CHO2

81 / 100

Category: Chemistry Ch 9 Class 11

Which of the following Is the smallest unit?

Molarity

Molality

PPM

Mole Fraction

82 / 100

Category: Chemistry Ch 4 Class 12

Which one of the following does not have allotropes?

N

P

As

Sb

83 / 100

Category: Chemistry Ch 15 Class 12

Which of the following is a Marco-nutrient

Boron

Copper

Iron

Nitrogen

84 / 100

Category: Chemistry Ch 11 Class 12

Boiling point of C2H5OH is high than phenol because:

Of Its stability

Presence of intermolecular H-bond

Both a & b

Its flammable

85 / 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

86 / 100

Category: Chemistry Ch 15 Class 12

Aerobic decomposition of organic matter i.e. glucose by bacteria in water sediments produces

UHS 2013
Chemistry
Environmental Chemistry
Elimination Tool:

A) Propene

B) Ethane

C) Methane

D) Butane

87 / 100

Category: Chemistry

Q.150 Who attributed the deviation of real gases from ideal behavior?

A. Boyle's law

B. Charles's law

C. Avogadro's law

D. Van der Waals

88 / 100

Category: Chemistry

Q.122 An orbital can accommodate at the most______________electrons

A.2

B.14

C. 1

D. 6

89 / 100

Category: Chemistry

Q.160 Polymerization of ethene produces which of the followving polymer?

A. Polyvinyl

B. Polethyl

C. Polyethylene

D. Polyethoxy

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 5 Class 12

Sulfur with HI acts as a:

Strong oxidizing agent

Strong reducing agent

Weak oxidizing agent

Weak reducing agent

92 / 100

Category: Chemistry Ch 4 Class 11

Which one of the following has crystalline structure?

Diamond

Sugar

Boron Nitride

Lithium Carbide

All of these

93 / 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

94 / 100

Category: Chemistry Ch 11 Class 11

Activated complex is formed due to

PMC Sample 3
Chemistry
Reaction Kinetics
Elimination Tool:

A) Pressure

B) Temperature

C) Effective collision

D) Ineffective collision

95 / 100

Category: Chemistry Ch 11 Class 11

The rate constant of a first-order reaction is 3 x 10-6 per second.

If the initial concentration is 0.10 M, the initial rate of reaction is:

NUMS 2018
Chemistry
Reaction Kinetics
Elimination Tool:

A) 3 x 10-3 Ms-1

B) 3 x 10-4 Ms-1

C) 3 x 10-6 Ms-1

D) 3 x 10-7 Ms-1

96 / 100

Category: Chemistry Ch 4 Class 12

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

Oxygen

Hydrogen

Carbon dioxide

Nitrogen

97 / 100

Category: Chemistry Ch 12 Class 12

Methyl ketones can be characterized by performing:

NUMS 2018
Chemistry
Aldehydes and Ketones
Elimination Tool:

A) Iodoform test

B) Schiff’s test

C) Benedict’s reagent test

D) Tollen’s test

98 / 100

Category: Chemistry Ch 9 Class 11

Which one of the following statements is incorrect?

NUMS 2018
Chemistry
Solution and Colloids
Elimination Tool:

A) A solution freezes at a lower temperature than the pure solvent

B) A solution boils at a higher temperature than the pure solvent.

C) 0.1 M NaCl solution and 0.1 m sugar solution have the same boiling point

D) Osmosis cannot take place without a semi-permeable membrane.

99 / 100

Category: Chemistry Ch 16 Class 12

Ozone Is

02

03

04

ps

100 / 100

Category: Chemistry Ch 2 Class 11

In a vessel, 10 g N2, 10 g H2 and 10g O2 are present. Which one will have least number of atoms?

PMC 2020
Chemistry
Stoichiometry
Elimination Tool:

A) H2

B) N2

C) O2

D) Both H2 and N2

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