Chemistry Practice Tests 1

Chemistry Practice Test 1

Chemistry Practice Test 1 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 physical chemistry, atomic structure, chemical bonding, and periodic table concepts, helping students improve accuracy and problem-solving skills.

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Chemistry Practice Test 1

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1 / 100

Category: Chemistry Ch 3 Class 12

Which one is not the type of Boric Acid?

Ortho boric Acid

Nano boric acid

Meta boric Acid

Pyro boric acid

2 / 100

Category: Chemistry Ch 8 Class 12

Generic formula of cycloalkane is:

PMC 2020
Chemistry
Hydrocarbons
Elimination Tool:

A) CnH2n+2

B) CnH2n

C) CnH2n – 1

D) CnH2n – 2

3 / 100

Category: Chemistry

Q.82 In balancing it is very important to identify the substance whose

A. Physical state is changed

B. Oxidation number is changed

C. Enthalpy is changed

D. All of these

4 / 100

Category: Chemistry Ch 5 Class 11

Which one of the following is not an isotope of hydrogen:

NUMS 2014
Chemistry
Atomic Structure
Elimination Tool:

A) Deuterium

B) Tritium

C) Ortho hydrogen

D) None of these

5 / 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

6 / 100

Category: Chemistry Ch 12 Class 12

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

PreMedPK MDCAT Mock 2
Chemistry
Aldehydes and Ketones
Elimination Tool:

A) LiAlH4

B) Zn(Hg)-HCl

C) NaBH4

D) CH3MgI

7 / 100

Category: Chemistry

Q.128 Which of the following element is not usually present in all proteins?

A. Carbon

B. Hydrogen

C. Nitrogen

D. Sulphur

8 / 100

Category: Chemistry

The shape of CO2 molecule is similar to:

NUMS Mock 2
Chemistry
Chemical Bonding

A) H2S

B) SO2

C) SnCl2

D) BeF2

9 / 100

Category: Chemistry

Q.78 Here DH° is enthalpy of

A. Combustion

B. Formation

C. Neutralization

D. Solution

10 / 100

Category: Chemistry Ch 11 Class 12

IUPAC name of wood spirit is

Ethanol

Methanol

Propanol

None of these

11 / 100

Category: Chemistry Ch 11 Class 12

Why is it necessary to distill aldehyde formed from oxidation of primary alcohol through acidified potassium dichromate (VI) solution or acidified sodium dichromate (VI) solution?

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

A) Aldehyde formed may be oxidized further to carboxylic acid concerned

B) Aldehyde formed is unstable and decompose back to original precursor i.e. primary alcohol

C) Aldehyde may be oxidised further to a ketone

D) Aldehyde formed may react with primary alcohol, the original reactant.

12 / 100

Category: Chemistry Ch 11 Class 11

Which of the following statements best describes how a catalyst works

NUMS 2018
Chemistry
Reaction Kinetics
Elimination Tool:

A) A catalyst changes the potential energies of the reactants and products

B) A catalyst decreases the temperature of the reaction which leads to a faster rate

C) A catalyst lowers the activation energy barrier for the reaction by providing a different reaction mechanism.

D) A catalyst raises the activation energy for the reaction which produces a faster rate

13 / 100

Category: Chemistry

In alkanes, each carbon has hybridization

NUMS Mock 4
Chemistry
Fundamental Principles of Organic Chemistry

A) sp3

B) sp

C) sp2

D) dsp

14 / 100

Category: Chemistry Ch 3 Class 11

Solid NaCl is a bad conductor of electricity because:

NUMS 2016
Chemistry
States of Matter – Gases, Liquids and Solids
Elimination Tool:

A) Solid NaCl is covalent

B) In the solid state, there are no ions

C) In solid NaCl. there is no migration of ions

D) In solid NaCl, there are not electron

15 / 100

Category: Chemistry Ch 3 Class 11

Choose the correct statement:

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

A) Diamond is the hardest and graphite is softest

B) Graphite is the hardest while lamp black is softest

C) Coal is the hardest and coke is softest

D) Diamond is the hardest and coke is softest

16 / 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

17 / 100

Category: Chemistry Ch 4 Class 11

Which of the following bonds Is the weakest?

Ionic

Covalent

Dative Covalent

Hydrogen bonding

18 / 100

Category: Chemistry Ch 11 Class 12

Which of following is an example of electrophilic attack on alcohols?

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

A) C2H5OH + CH3COOH → CH3COOC2H5 + H2O

B) 2C2H5OH+2Na→ 2CH5ONa+H2

C) C2H5OH + HCl → C2H5Cl + H2O

D) Both A and B

19 / 100

Category: Chemistry

Aromatic compounds burn with a sooty flame because:

NUMS Mock 3
Chemistry
Fundamental Principles of Organic Chemistry

A) They are resistant to react with oxygen

B) They have a cyclic structure

C) They have a high percentage of Carbon

D) They have a high percentage of hydrogen

20 / 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+

21 / 100

Category: Chemistry Ch 15 Class 12

Which of the pair of gases is not a greenhouse gas?

NUMS 2019 Cancelled
Chemistry
Environmental Chemistry
Elimination Tool:

A) Carbon dioxide and methane

B) Carbon dioxide and nitric oxide

C) Nitrogen and oxygen

D) Water vapour and ozone

22 / 100

Category: Chemistry Ch 9 Class 11

Colligative Properties depend upon: a

Solute

Solvent

Both a and b

None of these

23 / 100

Category: Chemistry Ch 13 Class 12

Carboxylic acids can be reduced to corresponding alcohols. Which of the following reagent can be used for this purpose?

UHS 2019
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) KMnO4

B) LiAlH4

C) K2Cr2O4

D) H2SO4

24 / 100

Category: Chemistry Ch 6 Class 11

Paramagnetism is due to:

Unpaired electron

Complete valence shell

Paired electron

Ionization

25 / 100

Category: Chemistry Ch 15 Class 12

______ is needed in thyroxine, the hormone of thyroid gland.

NTS 2012
Chemistry
Chemistry of Life
Elimination Tool:

A) Mg2+

B) K+

C) Ca2+

D) Iodine

26 / 100

Category: Chemistry

Which type of reaction takes place when a carbonyl compound is treated with a mixture of NaCN and an acid?

NUMS Mock 3
Chemistry
Aldehydes and Ketones

A) Electrophilic addition reaction

B) Substitution reaction

C) Nucleophilic addition reaction

D) Displacement reaction

27 / 100

Category: Chemistry

Q.164 Reaction of vinyl acetylene with HCI produces?

A. Polyvinyl polymer

B. Polyvinyl Acetylene

D. Chloroprene

C. Neoprene

28 / 100

Category: Chemistry

The spectrum of He is expected to be similar to that of:

NUMS Mock 4
Chemistry
Atomic Structure

A) Hydrogen

B) Sodium

C) Oxygen

D) Li+

29 / 100

Category: Chemistry Ch 10 Class 11

Standard Electrode Potential is measured at temperature:

348K

298K

20K

235K

30 / 100

Category: Chemistry

Q.38 Water is considered as a Universal solvent because of which properties?

A. Polar nature of water

B. H-bonding

C. Electronegativity difference

D. All are correct

31 / 100

Category: Chemistry Ch 8 Class 12

20 cm3 of a gaseous hydrocarbon was completely burnt in an excess of oxygen 60 cm3 of carbon dioxide and 40 cm3 of water vapours were formed, all volumes being measured at the same temperature and pressure. What is the formula of the hydrocarbon?

NTS 2015 SMBBMC
Chemistry
Hydrocarbons
Elimination Tool:

A) C2H6

B) C3H4

C) C3H6

D) C3H8

32 / 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

33 / 100

Category: Chemistry Ch 2 Class 11

If we take 2.2 grams of CO2, 6.02 x 1021atoms of nitrogen. and 0.03-gram atoms of sulfur, then the molar ratio of C, N, and atoms will be:

NTS 2013
Chemistry
Stoichiometry
Elimination Tool:

A) 1:2:5

B) 5:1:2

C) 2:5:3

D) 5:1:3

34 / 100

Category: Chemistry Ch 10 Class 11

Conversion of Electrical energy into chemical energy is

PMC Sample 2
Chemistry
Electrochemistry
Elimination Tool:

A) Mechanical Energy

B) Electromechanical Energy

C) Electrochemistry

D) Chemical Energy

35 / 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

36 / 100

Category: Chemistry Ch 2 Class 12

Which of the following do not occur in Free State?

Both

None of these

37 / 100

Category: Chemistry Ch 11 Class 12

Which of the following catalyst is used in the industrial preparation of methanol?

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

A) Zinc oxide and alumina

B) Alumina and silica

C) Silica and chromium oxide

D) Zinc oxide and chromium oxide

38 / 100

Category: Chemistry

Q.136 SN reactions are favored by which of the following reactions?

A. Water

B. Benzene

C. Carbon Tetrachloride

D. Carbon disulphide

39 / 100

Category: Chemistry

Which derivative of benzene shows maximum reactivity in electrophilic substitution reactions?

NUMS Mock 1
Chemistry
Hydrocarbons

A) Benzoic acid

B) Methyl benzene

C) Benzaldehyde

D) Nitrobenzene

40 / 100

Category: Chemistry Ch 9 Class 11

An ideal solvent dissolves maximum solute at?

Boiling point

At room temperature

Saturation point

At Freezing point

41 / 100

Category: Chemistry Ch 12 Class 12

What one is the correct geometry of acetal?

PreMedPK MDCAT Mock 3
Aldehydes and Ketones
Elimination Tool:

A) Trigonal

B) Linear

C) Tetrahedral

D) Square planer

42 / 100

Category: Chemistry Ch 6 Class 11

Which of the following molecules has no net dipole moment?

NUMS 2014
Chemistry
Chemical Bonding
Elimination Tool:

A) HCI

B) H2O

C) CCl4

D) CH3Cl

43 / 100

Category: Chemistry Ch 6 Class 11

The bonds present in N2O5 are:

NUMS 2015
Chemistry
Chemical Bonding
Elimination Tool:

A) Only ionic

B) Covalent and coordinate

C) Only covalent

D) Covalent and ionic

44 / 100

Category: Chemistry Ch 8 Class 11

For, the reaction:

N2 + 3H2 ⇌ 2NH3

The production of NH3 will be favored at:

NTS 2010
Chemistry
Chemical Equilibrium
Elimination Tool:

A) High pressure and catalyst

B) Low pressure only

C) Low pressure and catalyst

D) High pressure only

45 / 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

46 / 100

Category: Chemistry Ch 10 Class 11

Which of the following exhibits an oxidation state of -3?

47 / 100

Category: Chemistry Ch 3 Class 11

What assumptions are made in the Kinetic Theory about an ideal gas?

There are no forces of attraction between molecules
the molecules are in a state of continuous random motion
the size of the molecule is negligible
NTS 2015 SMBBMC
Chemistry
States of Matter – Gases, Liquids and Solids
Elimination Tool:

B) II ONLY

C) I AND II ONLY

D) II AND III ONLY

E) I, II, III

48 / 100

Category: Chemistry Ch 8 Class 11

How will the equilibrium of the following reaction be affected if additional nitrogen is added?

N2(g) + 3H2(g)⇌ 2NH3(g)

NTS 2015 DUHS and JSMU
Chemistry
Chemical Equilibrium
Elimination Tool:

A) It will be shifted to the right.

B) It will be shifted to the left.

C) it will be unaffected.

D) The effect on the equilibrium cannot be determined without more information.

49 / 100

Category: Chemistry Ch 2 Class 12

Magnesiums keep on burning in:

NUMS 2014
Chemistry
s and p Block Elements
Elimination Tool:

A) CO2

B) Magnesium and Copper

C) N2O

D) N2 as well as CO2

50 / 100

Category: Chemistry Ch 6 Class 12

lanthanide Contraction is phenomenon of block :

f block

s block

d block

P block

51 / 100

Category: Chemistry

Reaction of water with quicklime results in the rise in the temperature of the system. Using the concept of an energy change, indicates the nature of the reaction?

NUMS Mock 1
Chemistry
Thermochemistry

A) Endothermic Reaction

B) Non spontaneous Reaction

C) Third Order Reaction

D) Exothermic Reaction

52 / 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

53 / 100

Category: Chemistry

Q.118 Which of the following will not give iodoform test?

A. Ethanol

B. 3-Pentanone

C. 2-Pentanone

D. Ethanal

54 / 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

55 / 100

Category: Chemistry Ch 3 Class 11

Statement of Charles Law:

V is directly proportional to P

V is directly proportional to T

) P is inversely proportional to V

d) All of these

56 / 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

57 / 100

Category: Chemistry Ch 4 Class 12

Which of the following has allotropic forms:

Oxygen

Sulphur

Both

None of these

58 / 100

Category: Chemistry Ch 9 Class 11

Percentage of weight of NaCI if 2g NaCI is dissolved in 18g water

59 / 100

Category: Chemistry Ch 4 Class 11

Water has maximum density at:

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

A) -4 C

B) – 1 C

C) 0 C

D) 4 C

60 / 100

Category: Chemistry Ch 5 Class 11

“In an atom no two electrons can have the some set of four Quantum numbers” is stated by:

NTS 2013
Chemistry
Atomic Structure
Elimination Tool:

A) Heisenberg’s uncertainty principle

B) Aufbau Principle

C) Pauli's Exclusion principle

D) Hund's Rule

61 / 100

Category: Chemistry

Q86 : Which of the following is most ionic in nature

A. Sodium chloride

B. Sodium fluoride

C. Sodium bromide

D. Sodium iodide

62 / 100

Category: Chemistry Ch 8 Class 11

At equilibrium the concentration of reactants and product become:

NUMS 2020
Chemistry
Chemical Equilibrium
Elimination Tool:

A) Zero

B) Equal

C) Constant

D) Infinite

63 / 100

Category: Chemistry Ch 6 Class 11

Which of the following has a lone pair of electrons on the central atom?

PCI3

NH4

PCI

CH4

64 / 100

Category: Chemistry Ch 16 Class 12

Chloro-fluoro carbons cause

Radiations pollution

Water pollution

Air pollution

Soil pollution

65 / 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

66 / 100

Category: Chemistry

Q.98 The pair of liquids having the H-bonding as dominate force of attraction in the mixture but not individually

A. Water and ethanol

B. Ethanol and hydrogen fluoride

C. Chloroform and acetone

D. Water and hydrogen fluoride

67 / 100

Category: Chemistry Ch 15 Class 12

The increasing number of CFC production for industrial use has been a major contributor to the depletion of ozone molecules in the stratosphere. When CFCs diffuses slowly to the atmosphere in the presence of UV light between 175 nm to 220 nm, the ozone layer decomposes. If 1 mole of CFCl3 (Freon – 110) has been released into the air, how many moles of oxygen is produced from the photodecomposition of ozone?

NUMS 2019 Cancelled
Chemistry
Environmental Chemistry
Elimination Tool:

A) 1

B) 2

C) 3

D) 4

68 / 100

Category: Chemistry

Q.75 Metallic character depends on.

A. Electron affinity

B. Ionization energy

C. Electronegativity

D. All of these

69 / 100

Category: Chemistry

which of the following can not be used to convert butanoic acid to butanoyl chloride?

NUMS Mock 4
Chemistry
Carboxylic Acids and its Derivatives

A) PCl3

B) PCl5

C) CCl4

D) SOCl2

70 / 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

71 / 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

72 / 100

Category: Chemistry Ch 1 Class 12

The ionization energy increases from left to right in a period due to increase in?

PMC Practice 1
Chemistry
Periodicity in Elements
Elimination Tool:

A) Nuclear charge

B) Number of electrons

C) Atomic number

D) All of these

73 / 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

74 / 100

Category: Chemistry

Q.122 Glycoprotein is classified as

A. Simple protein

B. Conjugated protein

C. Derived protein

D. Non-conjugated protein

75 / 100

Category: Chemistry Ch 4 Class 11

Vapor pressure of a liquid depends upon

) Nature of liquid

Temperature

Both a and b

Atomic Pressure

76 / 100

Category: Chemistry Ch 2 Class 12

Magnesium oxide is used in:

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

A) as antacid

B) as reractory material

C) vulcanisation of rubber

D) all of the above

77 / 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

78 / 100

Category: Chemistry Ch 15 Class 12

Photochemical smog is primarily caused by

ETEA 2019
Chemistry
Environmental Chemistry
Elimination Tool:

A) O3

B) NO2

C) SO3

D) CO2

79 / 100

Category: Chemistry

Which of the following does not give iodoform test?

NUMS Mock 1
Chemistry
Aldehydes and Ketones

A) Ethanol

B) Ethanal

C) Acetophenone

D) Benzophenone

80 / 100

Category: Chemistry Ch 11 Class 11

Which of the following acids is used for Etching glass?

NTS 2011
Chemistry
Acids, Bases and Salts
Elimination Tool:

A) Hydrochloric Acid

B) Nitric Acid

C) Hydrofluoric Acid

D) Sulphuric Acid

81 / 100

Category: Chemistry Ch 9 Class 12

The structure of cyclohexane is:

PMC Sample 3
Chemistry
Hydrocarbons
Elimination Tool:

A) Trigonal

B) Pentagonal

C) Hexagonal

D) None of these options is correct

82 / 100

Category: Chemistry Ch 3 Class 12

Valence electronic configuration Cu+2 is (29Cu)

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

A) 5d6

B) 3d9

C) 3d8

D) 3d7

83 / 100

Category: Chemistry Ch 1 Class 11

The number of neutrons in H2SO4 are ____.

PMC Practice 26
Chemistry
Introduction to Fundamental Concepts of Chemistry
Elimination Tool:

A) 5

B) 49

C) 48

D) 44

84 / 100

Category: Chemistry Ch 7 Class 11

The enthalpy of certain reactions at 273 K is -20.75 kJ. The enthalpy of the same reaction at 373 K (if heat capacities of reactants and products are the same) will be:

NTS 2017
Chemistry
Thermochemistry
Elimination Tool:

A) －20.75 kJ

B) -2075 kJ

C) Zero

D) －20.75 x 373/273 kJ

85 / 100

Category: Chemistry Ch 6 Class 11

Silicon is found in nature in form of:

NUMS 2014
Chemistry
Chemical Bonding
Elimination Tool:

A) Isolated or free silicon

B) Sulphides

C) Silica or silicates

D) Only silicates

86 / 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

87 / 100

Category: Chemistry

Q.79 Salt Bridge is used for the purpose of

A. Producing Electrons

B. Circuit Completion

C. Increasing speed electrons

D. All of these

88 / 100

Category: Chemistry

Water has maximum density at:

NUMS Mock 2
Chemistry
States of Matter – Gases, Liquids and Solids

A) -4 C

B) – 1 C

C) 0 C

D) 4 C

89 / 100

Category: Chemistry

If any amino acids contain greater number of NH2, it is:

NUMS Mock 3
Chemistry
Alkyl Halides and Amines

A) Acidic

B) Neutral

C) Amphoteric

D) Basic

90 / 100

Category: Chemistry Ch 14 Class 12

Who introduced the concept of macromolecules?

PMC Practice 7
Chemistry
Macromolecules
Elimination Tool:

A) Runge

B) Maxwell

C) Staudinger

D) None of these

91 / 100

Category: Chemistry Ch 15 Class 12

How many grams of micronutrients are needed by 1 acre of land?

100-1000

200-500

6 to 200

20 to 300

92 / 100

Category: Chemistry Ch 3 Class 11

Which of the following substances has giant covalent structure?

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

A) Iodine crystal

B) Solid CO2

C) Silica

D) White phosphorus

93 / 100

Category: Chemistry Ch 1 Class 12

Hydration energy increases with

With high charge density

Distance between nucleus and outer most electron

Size of the atom

None of these

94 / 100

Category: Chemistry Ch 7 Class 12

78 g of a hydrocarbon occupies 22.414 ml of volume at S.T.P. The empirical formula of the hydrocarbon is CH. The molecular formula of this hydrocarbon is:

NUMS 2014
Chemistry
Fundamental Principles of Organic Chemistry
Stoichiometry
Analytical Chemistry
Elimination Tool:

A) C2H4

B) C6H6

C) C8H8

D) C4H4

95 / 100

Category: Chemistry Ch 10 Class 12

When Grignard reagent reacts with 1120, which of the following is formed

Parent alkane

Alkyl halide c

Alcohol

All are possible

96 / 100

Category: Chemistry

Q.1 The carbonyl compound which is attached with at least one H atom at one side is called as ?

A. Ketones

B. Aldehydes

C. Ethers

D. Alkyl halides

97 / 100

Category: Chemistry Ch 10 Class 11

Oxidation number of Nitrogen in HNO3, is:

NTS 2011
Chemistry
Electrochemistry
Elimination Tool:

A) +4

B) +2

C) +6

D) +5

98 / 100

Category: Chemistry

When a charged particle is projected perpendicular to a magnetic field:

NUMS Mock 4
Physics
Electrostatics

A) Its path is circular in a plane perpendicular to the plane of magnetic field

B) The speed and kinetic energy of the particle remains constant

C) The velocity and momentum of the particle changes only in direction

D) The time period of revolution and angular frequency of revolution is independent of the velocity of the particle and radius of the circular path

99 / 100

Category: Chemistry Ch 11 Class 12

In which of the following reaction does the C-O bond of alcohol not break?

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

A) Reaction with SOCl2

B) Dehydration

C) Esterification

D) All of these options are correct

100 / 100

Category: Chemistry Ch 8 Class 11

A system at equilibrium can be disturbed by:

NTS 2013
Chemistry
Chemical Equilibrium
Elimination Tool:

A) Concentration change

B) Pressure change

C) Temperature

D) All of the above

Your score is

The average score is 51%

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