CO2 and SO2 both are tri-atomic molecules but heat of vaporization of SO2 is greater than that of CO2 due to:

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

PolymerizatIon of ______ produces synthetic rubber.

PMC Sample 1
Chemistry
Hydrocarbons
Elimination Tool:

Magnesium reacts with nitrogen to form:

PMC 2020
Chemistry
s and p Block Elements
Elimination Tool:

One Calorie is equivalent to:

NTS 2019
Chemistry
Thermochemistry
Elimination Tool:

Reagent used to reduce a carboxylic acid to an alkane is:

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

phenol, and ethers are the derivatives of?

Calculate the root mean square speed of He atoms at 295 K?

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

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

Impurities of lead in silver are removed by:

NUMS Mock 2
Chemistry
d and f Block Elements

Copper is a typical transition metal. Its atomic number is 29. In which oxidation state does it have a partially filled orbital in d-subshell?

NUMS Mock 2
Chemistry
d and f Block Elements

The ionization of Hydrogen atom gives:

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

Which pair has species with different shapes?

NTS 2016 SMBBMC
Chemistry
Chemical Bonding
Elimination Tool:

In IUPAC nomenclature, Carboxylic acids are named as_______?

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

Formyl group is present in

PMC Sample 1
Chemistry
Fundamental Principles of Organic Chemistry
Elimination Tool:

Which of the following has the maximum number of unpaired electrons?

NUMS 2015
Chemistry
Atomic Structure
Elimination Tool:

) Acetic acid is used in making

Cyanohydrins can be synthesized from ketones through:

NUMS 2018
Chemistry
Aldehydes and Ketones
Elimination Tool:

The geometry of the complex compounds usually depends upon:

PMC 2021 Tested
Chemistry
d and f Block Elements
Elimination Tool:

Butanone on oxidation with K2Cr2O7 / H2SO4 forms:

NUMS 2020
Chemistry
Aldehydes and Ketones
Elimination Tool:

The change in concentration of reactant or product per unit time is called:

NTS 2016 DUHS & JSMU
Chemistry
Chemical Equilibrium
Elimination Tool:

Which of the following has the highest value of electronegativity?

PMC 2020
Chemistry
s and p Block Elements
Chemical Bonding
Elimination Tool:

A liquid crystalline state exists between two temperatures i.e melting temperature and ____ temperature.

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

Ethanol, when reacted with PCI5 , gave A, POCl3, and HCI. A reacts with AgNO2 to form B and AgCl. A and B are respectively:

NTS 2014
Chemistry
Alcohols, Phenols and Ethers
Elimination Tool:

The enthalpy change of the reaction

H2(g) + ½ O2 -> H2O (l)

under standard conditions is:

NUMS 2017
Chemistry
Thermochemistry
Elimination Tool:

Burning of which one of the following waste is considered as useful industrial fuel or to produce electricity

UHS 2015
Chemistry
Industrial Chemistry
Elimination Tool:

Which of the following is secondary pollutant?

NUMS 2019 Reconduct
Chemistry
Environmental Chemistry
Elimination Tool:

The rate of reaction:

PMC Sample 2
Chemistry
Reaction Kinetics
Elimination Tool:

A liquid has mass m and specific heat capacity c. The rate of change in temperature of the liquid is R. What is the rate at which heat is transferred from the liquid.

PMC Practice 2
Physics
States of Matter – Gases, Liquids and Solids
Elimination Tool:

At 1489 mm of Hg, water will boil at:

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

The molecular formula expresses?

NTS 2015 SMBBMC
Chemistry
Stoichiometry
Elimination Tool:

Enthalpy of a compound is equal to its

NUMS 2016
Chemistry
Thermochemistry
Elimination Tool:

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

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:

Nitriles (RCN), on hydrolysis, in the presence of a mineral acid yield:

UHS 2019
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

On reacting with which of the following carboxylic acids produce CO₂?

PMC Sample 1
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

What is the product of both fermentation reactions and fractional distillation:

NTS 2010
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

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

NUMS 2014
Chemistry
Atomic Structure
Elimination Tool:

Which of the following compounds is responsible for the depletion of ozone layer?

UHS 2019
Chemistry
Environmental Chemistry
Elimination Tool:

The C-H bond distance is the longest in:

NUMS 2015
Chemistry
Hydrocarbons
Elimination Tool:

Which one of them is used as an automobile antifreeze

PMC Sample 1
Chemistry
Fundamental Principles of Organic Chemistry
Elimination Tool:

Which of the following is not a property of liquid?

Primary Alcohol is produced by reactions of Grignard’s reagent with _________ followed by hydrolysis in an acidic medium.

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

Methyl alcohol is used for production of

A system at equilibrium can be disturbed by:

NUMS Mock 4
Chemistry
Chemical Equilibrium

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

NTS 2016 SMBBMC
Chemistry
Stoichiometry
Elimination Tool:

Electronegativity is defined as the power of an atom in a molecule to

Which of following pair has highest conductivity?

CH ≡ CH + 2AgNO3 -> AgC ≡ CAg + 2HNO3 represents _____ property of acetylene.

NTS 2012
Chemistry
Hydrocarbons
Elimination Tool:

In which of the following reagent Cupric citrate complex is formed?

PreMedPK MDCAT Mock 5
Chemistry
Aldehydes and Ketones
Elimination Tool:

NO2 in atmosphere absorbs moisture to form?

Which of the following is more soluble in water?

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

Reaction of CH3CH2MgBr with ethylene epoxide gives:

NUMS 2019 Reconduct
Chemistry
Alkyl Halides and Amines
Elimination Tool:

A crystal system having all sides (a, b and c) unequal and anglesα = β = γ= 90 is:

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

Which of the following is the correct order of increasing boiling point?

NUMS Mock 1
Chemistry
Alcohol, Phenols, and Ethers

Chemical formula of Malonic acid:

Which element of 5th group doesn’t have unpaired valence electrons in d-sub shell?

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

NUMS 2019 Cancelled
Chemistry
Aldehydes and Ketones
Elimination Tool:

Carbonyl group undergoes:

NUMS 2019 Reconduct
Chemistry
Aldehydes and Ketones
Elimination Tool:

Group 1A and 11A are known as: ) s block elements d) P block elements

During oxidation process, oxidation number of an element:

PMC 2020
Chemistry
Electrochemistry
Elimination Tool:

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?

NUMS Mock 3
Chemistry
States of Matter – Gases, Liquids and Solids

What volume in dm3 of KCl is obtained in the following equation if the volume of KCIO3 at the beginning of the reaction is 20 dm3?

2KClO3 -> 2KCl + 3O2

NTS 2016 DUHS & JSMU
Chemistry
Stoichiometry
Elimination Tool:

For which mechanism the first step involved is the same?

NTS 2016 DUHS & JSMU
Chemistry
Macromolecules
Elimination Tool:

The value K for H2(g) + CO2(g) H2O(g) + CO(g) is 1.80 at 1000 C. If 1.0 mole of each H2 and CO2 are placed in 1 litre flask, the final equilibrium concentration of CO at 1000 C will be:

NTS 2017
Chemistry
Chemical Equilibrium
Elimination Tool:

In the gaseous state, the distance between the molecules is ___ times _____ than their diameters.

PMC Sample 3
Chemistry
States of Matter – Gases, Liquids and Solids
Elimination Tool:

) The velocity of electron in outermost shell Is?

Which of the following compounds is solid at room temperature?

NUMS Mock 2
Chemistry
Alcohols, Phenols and Ethers

The Vander Waal’s constant ‘If of a gas Is four times the:

Which of the following has less amount of protein a

Vapor pressure of a liquid depends upon

Part of a polymer molecule has the following structure. -CH2 -CH2 -CH2 -CH2 -CH2 -CH2-

NUMS 2016
Chemistry
Macromolecules
Elimination Tool:

Caster kellners cell evaporated has replaced __________ because the Caster Kellner process evaporates__________?

NTS 2015 SMBBMC
Chemistry
s and p Block Elements
Elimination Tool:

silicon can be obtained from which one of the following compounds

Formula of fructose is:

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:

Which one of the following Is a vulcanizing agent?

Both 02 and 03 are Oxidizing agents but 02 is preferred because:

Which of the following statements is incorrect about amorphous solids?

PMC Practice 3
Chemistry
States of Matter – Gases, Liquids and Solids
Elimination Tool:

11) Hydrogen has properties similar to:

Acetone and Chloroform are soluble into each other due to:

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

Which of the following values of heat of formation indicates that the product is least stable?

NTS 2017
Chemistry
Thermochemistry
Elimination Tool:

Which of the following will be separated by filtration?

Gasoline is a mixture of?

NUMS 2018
Chemistry
Hydrocarbons
Elimination Tool:

The Haber Process is used to produce ammonia commercially according to the following equilibrium: N2(g) + 3H2g = 2NH3g + energy Which of the following conditions will produce the highest yield of ammonia?

The actual volume of gas molecules is considered negligible at following pressures:

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

Which of the following quantum numbers are for p-subshell?

In a discharge tube, at room pressure there is

Which of the following gases is used for welding purpose:

NTS 2019
Chemistry
Hydrocarbons
Elimination Tool:

Chemical properties of an atom depends upon number of

Which of the following is not the use of bleaching powder?

NTS 2016 SMBBMC
Chemistry
Periodicity in Elements
Elimination Tool:

Water boils when: