is used in electric light bulbs, in fluorescent tubes, in radio tubes and Geiger counters

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

Definition of electrode potential is?

Water boils when:

Which of the following is the reducing agent:

NUMS 2015
Chemistry
Fundamental Principles of Organic Chemistry
Elimination Tool:

Thermochemistry is very important to learn about _______.

NUMS Mock 3
Chemistry
Thermochemistry

which type of hybridization doesn’t exist?

Which class of the compounds is represented by the type formula ROR?

NUMS 2017
Chemistry
Aldehydes and Ketones
Elimination Tool:

Elimination from 2 – bromobutane results in:

NUMS 2018
Chemistry
Alkyl Halides and Amines
Elimination Tool:

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

NTS 2016 SMBBMC
Chemistry
Thermochemistry
Elimination Tool:

When fused PbBr2 is electrolyzed:

NUMS Mock 4
Chemistry
Electrochemistry

The biggest source of acid rain is the oxide of

UHS 2015
Chemistry
Environmental Chemistry
Elimination Tool:

To avoid the formation of toxic compounds with chlorine, which substance is used for disinfecting water?

NUMS Mock 1
Chemistry
s and p Block Elements

Which of the following alcohol does not get oxidized when it reacts with K₂Cr₂O₇/H₂SO₄?

PMC Sample 2
Chemistry
Alcohols, Phenols and Ethers
Elimination Tool:

1 atmospheric pressure is equal to

Which of the following statements is incorrect about benzene?

The rate of diffusion of hydrogen gas as compared to that of oxygen gas is:

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

Q.83 Alcohol oxidation gives carboxylic acid through

Which of the following Is the smallest unit?

Which of following Is poison for catalyst:

How would an ammonium group affect the benzene ring for subsequent reactions?

NTS 2017
Chemistry
Alkyl Halides and Amines
Elimination Tool:

The oxidation state of carbon in C2O42- is:

NUMS 2019 Reconduct
Chemistry
Electrochemistry
Elimination Tool:

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

NUMS 2014
Chemistry
Periodicity in Elements
Elimination Tool:

Which one of the following is the pure carbon compound and used as a reducing agent in industries?

NTS 2018
Chemistry
Macromolecules
Elimination Tool:

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

NTS 2013
Chemistry
Hydrocarbons
Elimination Tool:

Which of the following is not true about caustic soda? a) It causes painful burns c) It is manufactured by Costner—Kellner process e) Both b and d

Enzymes that are functioning within the cell are called:

NUMS 2016
Chemistry
Chemistry of Life
Elimination Tool:

Formula of fructose is:

Which of the following molecule is expressed in empirical formula:

The presence of several fine lines in a line spectrum shows the presence of:

NUMS Mock 3
Chemistry
Atomic Structure

Which in not woody raw material

In Cannizzaro’s reaction out of two moles, one makes salt of an acid the other makes

Which of the following molecules have zero Dipole moments?

NTS 2011
Chemistry
Chemical Bonding
Elimination Tool:

Which one of the following is used as an anesthetic?

If pressure and volume of a gas are variable while temperature remains constant, this belongs to

PMC Sample 2
Chemistry
Thermochemistry
Elimination Tool:

Gases can be converted into liquid by:

The suspected liver carcinogen which also has negative reproduction and developmental effect on humans is:

UHS 2011
Chemistry
Environmental Chemistry
Elimination Tool:

Mass spectrometer can be used to find:

The rate of diffusion of liquids is ________ than gases.

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

75% of a first order reaction is completed in 36 minutes. What is the half life of the reaction?

NUMS 2017
Chemistry
Reaction Kinetics
Elimination Tool:

is the process of transition of a substance directly from the solid to the gas phase without passing through the intermediate liquid phase.

Q.125 Standard electrode Potential is denoted by

Hybridization in diamond is

In alkanes, each carbon has hybridization:

PMC 2020
Chemistry
Fundamental Principles of Organic Chemistry
Elimination Tool:

Which one of the following is an example of a co-polymer?

UHS 2015
Chemistry
Industrial Chemistry
Elimination Tool:

Surface tension in a liquid is caused by?

NTS 2015 DUHS and JSMU
Chemistry
Chemical Bonding
Elimination Tool:

The hybridization of benzene is:

Polystyrene is an additional polymer. Which one of the following structures represents
the monomer of polystyrene?

UHS 2014
Chemistry
Environmental Chemistry
Elimination Tool:

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

NTS 2010
Chemistry
Chemical Equilibrium
Elimination Tool:

The formula of cryolite is

Q.1 Suppression of ionization means

Bleaching powder is agent?

Molecular ions are produced by passing a high energy electron beam or an x-ray beam through _______.

PMC Practice 21
Chemistry
Introduction to Fundamental Concepts of Chemistry
Elimination Tool:

Acetylene polymerizes to make:

PMC Sample 3
Chemistry
Hydrocarbons
Elimination Tool:

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:

Which of the following compounds will form a hydrocarbon on reaction with Grignard reagent?

PreMedPK MDCAT Mock 4
Chemistry
Hydrocarbons
Elimination Tool:

The reduction of nitrile produced a compound of formula C3H7NH2. Which one of the following compounds would be produced if the same nitrile was hydrolyzed by heating with dilute hydrochloric acid?

NUMS 2016
Chemistry
Alkyl Halides and Amines
Elimination Tool:

ΔH = ΔE + PΔV is the change in enthalpy at constant ________.

NUMS 2018
Chemistry
Thermochemistry
Elimination Tool:

For a given mass of gas, if the pressure is reduced to half and its temperature is doubled, then volume V will become?

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

Which of the following statements is correct?

NTS 2011
Chemistry
Atomic Structure
Elimination Tool:

NUMS 2014
Chemistry
Chemical Bonding
Elimination Tool:

The expression PV = nRT represents the:

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

Which of the following is least polarizable?

NUMS 2014
Chemistry
s and p Block Elements
Elimination Tool:

What is the color of silver acetylide, AgC=CAg?

PMC Practice 2
Chemistry
Hydrocarbons
Elimination Tool:

Which of the following ions will show maximum hydration?

NTS 2016 SMBBMC
Chemistry
Chemical Bonding
Elimination Tool:

Which of the following will react with water?

NUMS 2016
Chemistry
Introduction to Fundamental Concepts of Chemistry
Elimination Tool:

In contact process, to which substance adequate quantities of water is added to convert it to sulphuric acid?

NUMS Mock 1
Chemistry
Chemical Equilibrium

The mass number of an atom is:

PMC 2021 Tested
Chemistry
Fundamental Principles of Organic Chemistry
Introduction to Fundamental Concepts of Chemistry
Elimination Tool:

The atomic mass, molecular mass, ionic mass or formula mass of a substance expressed in grams is called:

PMC 2021 Tested
Chemistry
Introduction to Fundamental Concepts of Chemistry
Elimination Tool:

Which is the structure of polyvinyl chloride (polychloroethane)?

UHS 2018
Chemistry
Macromolecules
Elimination Tool:

) Nylon 6 —6 Is obtained by heating adipic acid with:

Which of the following has the least electron affinity value?

NUMS 2015
Chemistry
Periodicity in Elements
Elimination Tool:

Linear combination of atomic orbitals (LCAO) results in the formation of:

NUMS Mock 2
Chemistry
Chemical Bonding

The hybridization of atomic orbitals of N2+, NO3-, and NH4+are, respectively:

NTS 2015 DUHS and JSMU
Chemistry
Chemical Bonding
Elimination Tool:

Fuels with higher octane number can be produced by ___________.

PMC Practice 2
Chemistry
Hydrocarbons
Elimination Tool:

The valency of an atom will be one if there is a sufficient gap between first and second ____.

NUMS Mock 1
Chemistry
Chemical Bonding

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:

What does the constant ‘n’ represent in the equation of state for an ideal gas PV = nRT?

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

22.4 dm3 of volume of each H2 and O2 are sparked to produce water vapours (considered as ideal gas) on completion of reaction. What is the decrease in the volume of the vessel?

NTS 2016 SMBBMC
Chemistry
Stoichiometry
Elimination Tool:

When alpha particles are bombarded on beryllium

Graphite has a structural similarity with:

PMC Practice 2
Chemistry
Macromolecules
Elimination Tool:

In the following reaction:

3Br2 +6CO32- + 3H2O → 5Br-1 + BrO3-1 + 6HCO3-1

NTS 2014
Chemistry
Electrochemistry
Elimination Tool:

Which of the following is the correct IUPAC name?

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

Rectified spirits have a percentage of alcohol.

NUMS 2018
Chemistry
Alcohols, Phenols and Ethers
Elimination Tool:

Formula of Epsom salt is:

950 torr corresponds to:

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

By fermentation process of starch and by the catalytic enzyme, ______ is produced.

NUMS 2018
Chemistry
Alcohols, Phenols and Ethers
Elimination Tool:

Which of the following is an assumption of the kinetic model of an ideal gas?

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

Most abundant salt of sodium in nature is:

NTS 2017
Chemistry
s and p Block Elements
Elimination Tool:

Transition Elements usually show:

NUMS Mock 2
Chemistry
d and f Block Elements

What is common when carboxylic acid is reacted with base or with alcohol?

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