FSC Chemistry Full Book MCQs 4

NET Practice

Chemistry Practice Test 4

1 / 100

Category: Chemistry

Name the orbital n = 5; l = 2; m = 0.

NUMS Mock 1
Chemistry
Atomic Structure

A) 5p

B) 5d

C) 5s

D) 5f

2 / 100

Category: Chemistry Ch 8 Class 12

KOLBE’s method is used to prepare?

Ethane

Ethene

Ethyne

All of these

3 / 100

Category: Chemistry Ch 4 Class 11

Vapor pressure depends on

Size of the container used to collect the gas

Current atmospheric pressure

Temperature of the liquid

d) Kind of gas that is being collected

4 / 100

Category: Chemistry Ch 11 Class 11

H2SO4 has great affinity for water because:

NTS 2014
Chemistry
Acids, Bases and Salts
Elimination Tool:

A) It decomposes the acid

B) It hydrolyses the acid

C) Acid decomposes the water

D) Acid forms hydrates with water

5 / 100

Category: Chemistry Ch 11 Class 11

Which of the following oxides is amphoteric in character?

NUMS 2014
Chemistry
Acids, Bases and Salts
Elimination Tool:

A) CaO

B) CO2

C) SiO2

D) SnO2

6 / 100

Category: Chemistry Ch 11 Class 11

Instantaneous rate of reaction is the rate at any

PMC Sample 2
Chemistry
Reaction Kinetics
Elimination Tool:

A) At Equilibrium

B) one instant

C) Given Temperature

D) Given Pressure

7 / 100

Category: Chemistry Ch 13 Class 12

Ease of esterification of the following alcohols CH3CH2OH(I),(CH3)2CHOH and (CH3)3COH(III) with HCOOH is:

NUMS 2017
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) I < II < III

B) III < II < I

C) II < I < III

D) I = II = III

8 / 100

Category: Chemistry

Q.70 To prepare a buffer with pH close to 9, the mixture used would be

A. CH3COOH + CH3COONa

B. NaHCO3 + H2CO3

C. H3PO4 + NaH2PO4

D. NH4OH + NH4Cl

9 / 100

Category: Chemistry Ch 5 Class 11

Which of the following statements is correct?

NTS 2011
Chemistry
Atomic Structure
Elimination Tool:

A) Faraday's experiment indicates the existence of electrons

B) Crookes tube experiment shows the presence of electrons and protons in the atoms

C) Radioactivity confirms the presence of electrons and protons

D) Chadwick experiment shows the presence of neutrons

E) All of these

10 / 100

Category: Chemistry

Q.176 Quantum number values for 2p orbítals are

A. n=2,l=1

B. n= 1.l=2

C. n =1,1l=0

D. n=2,l=2

11 / 100

Category: Chemistry Ch 9 Class 12

Which of the following statements is incorrect about benzene?

All of the carbon atoms are sp hybridized.

The carbon-carbon bond lengths are all the same.

It has delocalized electrons.

The carbon-hydrogen bond lengths are all the same.

12 / 100

Category: Chemistry

Q.103 Left-handed helix in proteins secondary structure is called as

A. Alpha helix

B. Beta helix

C. Spiral

D. Coucentrate

13 / 100

Category: Chemistry Ch 11 Class 11

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

NUMS 2019 Reconduct
Chemistry
Reaction Kinetics
Elimination Tool:

A) First order reaction

B) Zero order reaction

C) Second order reaction

D) Third order reaction

14 / 100

Category: Chemistry Ch 12 Class 12

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

PMC 2020
Chemistry
Aldehydes and Ketones
Elimination Tool:

A) HCN

B) BrMgCH3

C) NaHSO3

D) H2O

15 / 100

Category: Chemistry Ch 2 Class 12

Sodium Is prepared by

Down's cell

Dutch's method

Castner-kellner process

Nelson's process

16 / 100

Category: Chemistry Ch 7 Class 11

One Calorie is equal to:

PMC 2020
Chemistry
Thermochemistry
Elimination Tool:

A) 4.18 KJ

B) 4.18 J

C) 0.418 KJ mol-1

D) 0.418 KJ

17 / 100

Category: Chemistry Ch 7 Class 11

A catalyst increases the rate of reaction by:

NTS 2019
Chemistry
Thermochemistry
Elimination Tool:

A) decreasing the activation energy

B) decreasing the concentration of reactants

C) decreasing the temperature

D) increasing the temperature

18 / 100

Category: Chemistry Ch 5 Class 12

Which of the following is the formula of Potassium permanganate?

KMnO4

K2Mn0

KMn02

None of these

19 / 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

20 / 100

Category: Chemistry Ch 7 Class 11

Burning of fuel is a

Endothermic

Exothermic

Both a & b

None of these

21 / 100

Category: Chemistry Ch 6 Class 11

Which of the following is the highest electronegative element?

F

N

CI

O

22 / 100

Category: Chemistry Ch 7 Class 11

Heat evolved or absorbed in a chemical reaction does not depend upon?

NTS 2016 SMBBMC
Chemistry
Thermochemistry
Elimination Tool:

A) Amount of reactants

B) Pressure of reaction

C) Physical state of reactants and products

D) Temperature

23 / 100

Category: Chemistry Ch 9 Class 12

C6H5 Is:

Phenyl

Methyl

Ethyl

Hexyl

24 / 100

Category: Chemistry Ch 10 Class 11

Current in electrolysis is carried through?

PMC Practice 1
Chemistry
Electrochemistry
Elimination Tool:

A) Free electrons

B) Positive Ions

C) Negative Ions

D) Both B and C

25 / 100

Category: Chemistry Ch 1 Class 12

What is a complex/coordination compound?

PMC Sample 1
Chemistry
Periodicity in Elements
Elimination Tool:

A) A compound in which a metal atom or ion is covalently bonded with a group of neutral molecules or anions.

B) A compound that contains 2 or more than 2 different elements

C) A compound which has complex molecular geometry

D) A compound that contains a complex ion and can exist independently

26 / 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

27 / 100

Category: Chemistry Ch 10 Class 11

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

NUMS 2017
Chemistry
Electrochemistry
Elimination Tool:

A) Electroplating

B) Conductivity

C) Galvanizing

D) Metallurgy

28 / 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+

29 / 100

Category: Chemistry Ch 9 Class 11

Lowering of vapor pressure is directly proportional to?

Number of solute particles

Temperature

Chemical Formula

Number of solvent particle

30 / 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

31 / 100

Category: Chemistry

Which one of the following molecules has sp3 hybridization?

NUMS Mock 2
Chemistry
Chemical Bonding

A) CH4

B) C2H4

C) CO2

D) C2H2

32 / 100

Category: Chemistry Ch 4 Class 11

The nature of Binding Force in Ionic Crystals is

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

A) Magnetic

B) Repulsive

C) Electrostatic

D) Weak

33 / 100

Category: Chemistry Ch 9 Class 11

Human blood maintains its pH between

UHS 2016
Chemistry
Solution and Colloids
Elimination Tool:

A) 6.50 – 7.00

B) 7.20 – 7.25

C) 7.50 – 7.55

D) 7.35 – 7.40

34 / 100

Category: Chemistry Ch 1 Class 12

The binding energy of transition metal increases upto group:

NUMS 2020
Chemistry
Periodicity in Elements
Elimination Tool:

A) IIB

B) IVB

C) IIIB

D) VIB

35 / 100

Category: Chemistry Ch 8 Class 11

A chemical engineer wants to use the Haber process in order to produce ammonia as raw material for fertilizers. Which of the following parameters must the chemical engineer AVOID in order to obtain the maximum yield of ammonia?
N2(g) + 3H2(g) -> 2NH3(g) ΔH0 = -92.6 kJ/mol

NUMS 2019 Cancelled
Chemistry
Chemical Equilibrium
Elimination Tool:

A) Increase the temperature

B) Use a catalyst

C) Adding more nitrogen gas

D) Increase the pressure

36 / 100

Category: Chemistry Ch 10 Class 11

The oxidation number of all the elements in the free state is:

NTS 2012
Chemistry
Electrochemistry
Elimination Tool:

A) 1

B) 3

C) 0

D)-1

37 / 100

Category: Chemistry Ch 6 Class 11

Which of the following is paramagnetic

Nickle

Vanadium

Uranium

Oxygen

38 / 100

Category: Chemistry Ch 7 Class 11

Which enthalpy change is relevant in the following process

Na(s) -> Na (g) ΔH = +107

UHS 2019
Chemistry
Thermochemistry
Elimination Tool:

A) Enthalpy of atomization

B) Enthalpy of fusion

C) Enthalpy of vaporization

D) Enthalpy of formation

39 / 100

Category: Chemistry Ch 1 Class 11

If you need to produce carbon dioxide from 12 grams of carbon, how many grams would you need?

32

4

16

8

40 / 100

Category: Chemistry Ch 11 Class 11

Methyl orange is _______ in acidic solutions.

NTS 2018
Chemistry
Acids, Bases and Salts
Elimination Tool:

A) Yellow

B) Pink

C) Orange

D) Red

41 / 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-

42 / 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

43 / 100

Category: Chemistry Ch 5 Class 11

What are the values of orbital quantum number/0 and magnetic quantum number(m) for subshell?

l=1,m=0,+1-1

l= 0,m= 0

l = 2, m = 0, +1-1, +/- 2

l = 3, m= 0, +/-1, +/- 2, +/-3

44 / 100

Category: Chemistry

Q.123 Which of the following is succinic acid?

A. Ethanoic acid

B. Hexane dioic acid

C Butane dioic acid

D. Propanoic acid

45 / 100

Category: Chemistry Ch 5 Class 11

The Neutron was discovered by:

NTS 2018
Chemistry
Atomic Structure
Elimination Tool:

A) Goldstein

B) Rutherford

C) J.J Thomson

D) Chadwick

46 / 100

Category: Chemistry Ch 10 Class 12

In general formula of alkyl halide RX, X represents ________

PMC Sample 2
Chemistry
Alkyl Halides and Amines
Elimination Tool:

A) Noble gases

B) Halogens

C) Metals

D) Metalloids

47 / 100

Category: Chemistry Ch 6 Class 11

The first ionization energy is maximum for:

PMC 2020
Chemistry
Chemical Bonding
Elimination Tool:

A) Na

B) Mg

C) Al

D) K

48 / 100

Category: Chemistry Ch 7 Class 12

Which functional group is not a double bond?

NUMS 2019 Cancelled
Chemistry
Fundamental Principles of Organic Chemistry
Elimination Tool:

A) Ethers

B) Aldehydes

C) Ketones

D) Esters

49 / 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.

50 / 100

Category: Chemistry Ch 15 Class 12

Which of these pollutants is produced by burning of coal and causes acid rain.

UHS 2018
Chemistry
Environmental Chemistry
Elimination Tool:

A) NO

B) CO2

C) SO2

D) CO

51 / 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

52 / 100

Category: Chemistry

Precipitation occurs when the product of ionic concentrations is:

NUMS Mock 4
Chemistry
Chemical Equilibrium

A) Greater than Ksp

B) Less than Ksp

C) Equal to Ksp

D) Equal to unity

53 / 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

54 / 100

Category: Chemistry Ch 10 Class 12

Alkyl Halides that go through SN1 reactions are

Primary

Secondary

Tertiary

All of these

55 / 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

56 / 100

Category: Chemistry Ch 4 Class 11

Crystal structure of diamond is

Trigonal

Tetrahedral

Cubic

None of these

57 / 100

Category: Chemistry Ch 9 Class 11

Which one is the correct formula for molar mass of solute In case of boiling point elevation? x

M2= 1000 Kb W2M1/ Tb W1

) M2= 1000 Kb W2/ Tb

M2 = Kb W1 Tb/1000

M2 =1000 Tb W21 Kb

58 / 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

59 / 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

60 / 100

Category: Chemistry

Q.117 The rate of esterification of alcohols is more for

A. (CH3)3 COH

B. CH3 OH

C. C2 H5 OH

D. (CH3)2 CHOH

61 / 100

Category: Chemistry Ch 1 Class 11

1 amu is?

1.66 x 10^-27 kg

1.602 x 10^27 kg

1.66 x 10^-31 kg

None

62 / 100

Category: Chemistry Ch 3 Class 11

What is the temperature at which the volume of gas is said to be zero?

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

A) 0 C

B) 4 C

C) -273.16 C

D) -173.16 C

63 / 100

Category: Chemistry Ch 6 Class 11

Bond angle of Ethane is:

109.5

120

180

Different

64 / 100

Category: Chemistry

The influence of temperature on reaction rate is predicted by:

NUMS Mock 1
Chemistry
Reaction Kinetics

A) Free energy change

B) Van Der Waals equation

C) Arrhenius equation

D) Kinetic equation

65 / 100

Category: Chemistry Ch 10 Class 11

Oxidation state of P in Mg2P3O5 Is

+2

-2

-1

1

66 / 100

Category: Chemistry Ch 12 Class 12

A diabetic person’s exhaled breath contains propanone. A student tries to test the diabetes by asking the person to bubble the reagent with his exhaled breath. Which of the following reagents would give a positive result?

NUMS 2019 Cancelled
Chemistry
Aldehydes and Ketones
Elimination Tool:

A) Aqueous Bromine

B) Fehling’s reagent

C) Tollen’s reagent

D) Alkaline aqueous iodine

67 / 100

Category: Chemistry Ch 13 Class 12

Which one of the following is neutral amino acid:

Alanine

Glyclne

Valine

All of these

68 / 100

Category: Chemistry Ch 3 Class 12

Electronic configuration of chromium (Proton number 24) is:

PMC 2020
Chemistry
d and f Block Elements
Elimination Tool:

A) [Ar] 3d4 4s2

B) [Ar] 3d5 4s2

C) [Ar] 3d5 4s1

D) [Ar] 3d5 4s2

69 / 100

Category: Chemistry Ch 3 Class 11

Gases behave ideal at

Low pressure and High temperature

low pressure and Low temperature

High temperature and Low pressure

High temperature and High pressure

70 / 100

Category: Chemistry Ch 6 Class 11

H2O has a higher boiling point than HF because:

NTS 2015 DUHS and JSMU
Chemistry
Chemical Bonding
Elimination Tool:

A) H2O is more polar than HF

B) H2O can form more hydrogen bonds

C) H2O has higher molecular weight

D) H2O has more atoms

71 / 100

Category: Chemistry Ch 1 Class 11

Limiting reactant controls the amount of _.

PMC Practice 27
Chemistry
Introduction to Fundamental Concepts of Chemistry
Elimination Tool:

A) Reactant

B) Products

C) Both A&B

D) None of these

72 / 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

73 / 100

Category: Chemistry

Q.89 Iftwo substituents are present at 1,4 positions then the isomer is called As____________?

A. Ortho

B. Meta

C.Para

D.None of these

74 / 100

Category: Chemistry Ch 3 Class 11

Real gases behave ideally at:

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

A) Low temperature and low pressure

B) Moderate temperature and low pressure

C) High temperature and low pressure

D) High temperature and high pressure

75 / 100

Category: Chemistry Ch 8 Class 11

In a exothermic process, forward direction reaction is favored by:

Increase in temperature

Decrease In temperature

) Increase and decrease repeatedly

None of these

76 / 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

77 / 100

Category: Chemistry

Which is not a meta directing group:

NUMS Mock 1
Chemistry
Fundamental Principles of Organic Chemistry

A) -NO2

B) -COOH

C) -NH2

D) -COR

78 / 100

Category: Chemistry Ch 3 Class 12

Scandium, Sc, is the first of the 3d blocks of elements in the Periodic table.

Which properties of Sc approve the above fact?

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

A) Sc has ionic chloride

B) Sc readily forms oxidation state of +3

C) Compounds containing the Sc3+ion are always colored.

D) Sc has ionic chloride and Sc readily forms oxidation state of +3

79 / 100

Category: Chemistry

Q.104 The maximum number of electrons accommodated in a shell or energy level is calculated by formula

A.n^2

B. 2n^2

C. 2n

D.3n

80 / 100

Category: Chemistry Ch 4 Class 11

The shape of crystal in which it usually grows is called its _____.

PMC Practice 6
Chemistry
States of Matter – Gases, Liquids and Solids
Elimination Tool:

A) Size

B) Capacity

C) Habit

D) Property

81 / 100

Category: Chemistry Ch 14 Class 12

Teflon contains which of the following halide?

Chlorine

Bromine

Fluorine

All of these

82 / 100

Category: Chemistry Ch 15 Class 12

What is used in cement manufacture?

Limestone

Starch

Potassium Oxide

Both a and b

83 / 100

Category: Chemistry Ch 15 Class 12

Percentage of nitrogen in urea is:

92

68

46

48

84 / 100

Category: Chemistry

The potential difference of an electrochemical cell is measured by:

NUMS Mock 2
Chemistry
Electrochemistry

A) Ammeter

B) Voltmeter

C) Galvanometer

D) Calorimeter

85 / 100

Category: Chemistry

Which of the following indicate the correct variation of electronegativity?

NUMS Mock 1
Chemistry
Chemical Bonding

A) F > N > O > C

B) F > N C

C) F < N < O < C

D) F > O > N > C

86 / 100

Category: Chemistry Ch 2 Class 11

Which of the following can ba employed instead of filter papers?

Gooch Crucible

Sintered Glass Crucible

Both a and b

None of these

87 / 100

Category: Chemistry Ch 7 Class 11

Heat of Neutralization is defined as:

Heat of formation of one mole of salt

Both a and b

Heat of formation of one mole of water

None of these

88 / 100

Category: Chemistry Ch 14 Class 12

PVC is created from which halogen

Fl

Br

CI

I

89 / 100

Category: Chemistry Ch 1 Class 12

The chemical formula of chromyl chloride gas is?

NTS 2016 SMBBMC
Chemistry
Periodicity in Elements
Elimination Tool:

A) Cr2O3

B) CrO2Cl2

C) CrOCl2

D) CrCl3

90 / 100

Category: Chemistry Ch 2 Class 12

Strontium lies between calcium and barium in Group II A in the Periodic Table. Which of the properties could be predicted for strontium?

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

A) It forms a water-soluble carbonate that does not decompose on heating.

B) It forms a sparingly soluble sulfate

C) It forms a nitrate which decomposes on heating to form strontium nitrite and oxygen.

D) It is reduced by cold water, liberating hydrogen.

91 / 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

92 / 100

Category: Chemistry Ch 12 Class 12

Why is water added after the reduction process of aldehyde and ketone with LiAlH4?

NUMS 2019 Cancelled
Chemistry
Aldehydes and Ketones
Elimination Tool:

A) Because water reacts violently with LiAlH4

B) Because water will protonate LiAlH4

C) Because water inhibits the process

D) Because it will result to alkenes

93 / 100

Category: Chemistry Ch 10 Class 12

Which type of alkyl halides gives SN2 mechanism?

NUMS 2019 Reconduct
Chemistry
Alkyl Halides and Amines
Elimination Tool:

A) Secondary alkyl halides

B) Tertiary alkyl halides

C) Vinyl halides

D) Primary alkyl halides

94 / 100

Category: Chemistry Ch 10 Class 12

Which of the following is not a nucleophile?

NTS 2010
Chemistry
Alkyl Halides and Amines
Elimination Tool:

A) HO-

B) NH3

C) BF3

D) CN-

95 / 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

96 / 100

Category: Chemistry Ch 7 Class 12

Which of the following has the lowest vapour pressure at 20 degrees Centigrade?

PMC 2020
Chemistry
Fundamental Principles of Organic Chemistry
Elimination Tool:

A) Diethyl ether

B) Chloroform

C) Carbon tetrachloride

D) Water

97 / 100

Category: Chemistry

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

NUMS Mock 1
Chemistry
Aldehydes and Ketones

A) LiAlH4

B) Zn(Hg)-HCl

C) NaBH4

D) CH3MgI

98 / 100

Category: Chemistry Ch 7 Class 12

In SN1 reaction “1” stands for?

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

A) Polar solvents

B) Unimolecular

C) Bimolecular

D) Nucleophile

99 / 100

Category: Chemistry Ch 6 Class 11

In HF the covalent bond is due to:

NTS 2016 SMBBMC
Chemistry
Chemical Bonding
Elimination Tool:

A) S-S overlapping

B) S-Pz overlapping

C) S-Px overlapping

D) Pz – Pz overlapping

100 / 100

Category: Chemistry Ch 10 Class 11

In the electrolysis of molten ZnCl2, how much Zn can be deposited at the cathode by the passage of 0.01 ampere for one hour?

NUMS 2017
Chemistry
Electrochemistry
Elimination Tool:

A) 0.002 g

B) 0.123 g

C) 0.012 g

D) 0.004 g

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