If the matter in a given system at a given condition is divided into two equal parts, then the value of the extensive properties will become:

NTS 2011
Chemistry
States of Matter – Gases, Liquids and Solids
Elimination Tool:

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

Oxidation is defined as:

The amount of solute present in the given amount of solvent is called:

NTS 2017
Chemistry
Solution and Colloids
Elimination Tool:

H2 and Cl2 do not react in the dark, but in the presence of light a vigorous reaction is initiated due to the formation of:

NUMS 2016
Chemistry
Hydrocarbons
Elimination Tool:

Only those substances are written in Ion Electron Method:

PMC Sample 1
Chemistry
Electrochemistry
Elimination Tool:

For a reaction given below

C(s) + O2 (g) -> CO2 (g) + 394 kJ / mol

The enthalpy of reaction is

NTS 2016 SMBBMC
Chemistry
Thermochemistry
Elimination Tool:

The temperature at which one crystalline form changes to other is called ___ temperature

PMC Sample 3
Chemistry
Solution and Colloids
Elimination Tool:

When CH3 is attached to the benzene ring, it makes the ring a:

PMC 2020
Chemistry
Hydrocarbons
Elimination Tool:

The bonds present in N2O5 are:

NUMS 2015
Chemistry
Chemical Bonding
Elimination Tool:

Which one of the following elements has six valence electrons?

Red lead is:

NUMS 2014
Chemistry
s and p Block Elements
Elimination Tool:

The relation between first and second ionization potentials of a given atom is:

NUMS Mock 4
Chemistry
Chemical Bonding

The method which is used on an industrial scale for production of alcohol from alkene is:

PreMedPK MDCAT Mock 2
Chemistry
Alcohols, Phenols and Ethers
Elimination Tool:

The rate of a reaction in general can be increased by all the following factors except:

NUMS Mock 2
Chemistry
Reaction Kinetics

Which element among the following forms a protective oxide coating on exposure to air?

12% W/W alcohol In water solution contains water:

Methyl orange is _______ in acidic solutions.

NTS 2018
Chemistry
Acids, Bases and Salts
Elimination Tool:

Acetylene upon heating at 300 C gives:

A reaction with a tendency of occurring in forward and backward direction simultaneously is termed as

PMC Sample 1
Chemistry
Chemical Equilibrium
Elimination Tool:

One Calorie is equal to:

PMC 2020
Chemistry
Thermochemistry
Elimination Tool:

Q.69 Carbon dioxide is an Example of

Which one of the following has the least C — C bond length?

Both ionic and covalent bonds are present in:

NUMS 2015
Chemistry
Chemical Bonding
Elimination Tool:

Which one of the following organic compounds have the least carbon-carbon bond length?

NUMS Mock 4
Chemistry
Hydrocarbons

Which of the following gases is used for welding purpose:

NTS 2019
Chemistry
Hydrocarbons
Elimination Tool:

The difference between soft and hard X-rays is of:

NUMS 2016
Physics
Atomic Structure
Elimination Tool:

The general formula for an aldehyde is:

NTS 2010
Chemistry
Aldehydes and Ketones
Elimination Tool:

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

NTS 2016 SMBBMC
Chemistry
Periodicity in Elements
Elimination Tool:

What is the chemical formula for plaster of Paris?

NTS 2010
Chemistry
s and p Block Elements
Elimination Tool:

In general formula of alkyl halide RX, X represents ________

PMC Sample 2
Chemistry
Alkyl Halides and Amines
Elimination Tool:

The chemical formula of chromyl chloride gas is?

NTS 2016 SMBBMC
Chemistry
Periodicity in Elements
Elimination Tool:

Electrons are most loosely bound in which of the following halogen?

Chlorine is manufactured commercially by the electrolysis of aqueous sodium chloride (brine). Which other products are made in this process?

NTS 2010
Chemistry
Macromolecules
Elimination Tool:

Which pair has species with different shapes?

NTS 2016 SMBBMC
Chemistry
Chemical Bonding
Elimination Tool:

The shape of SnCl2 is:

NUMS 2015
Chemistry
Chemical Bonding
Elimination Tool:

By treating CO2 with Grignard’s reagent, the following compound is obtained;

NUMS Mock 2
Chemistry
Carboxylic Acids and its Derivatives

How many molecules are there in 2.1 moles of CO₂:

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

Chlorofluorocarbons (CFCs) are important compounds that are used as refrigerants but these are also responsible for Ozone layer depletion. If a Chlorofluorocarbon CFCl3 is present in stratosphere, which of it’s reaction intermediates are actually responsible for the breakdown of the ozone molecule?

UHS 2019
Chemistry
Environmental Chemistry
Elimination Tool:

Which of the following has maximum Hydration power?

NUMS 2015
Chemistry
Chemical Bonding
Elimination Tool:

) Acetic acid is used in making

What is NOT true about K2Cr2O7?

The Lattice energy is also called as:

PMC 2020
Chemistry
Chemical Bonding
Elimination Tool:

Which of the following represent the formula of Ketone?

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

The reaction 2CO + O2 -> 2CO2 proceeds slower because activation energy is:

NTS 2018
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:

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:

Purification of table salt (NaCl) by passing HCl gas through its saturated aqueous solution is an example of:

PMC 2020
Chemistry
Chemical Equilibrium
Elimination Tool:

The maximum number of electrons that an orbital can accommodate is/are:

NTS 2010
Chemistry
Atomic Structure
Elimination Tool:

J.J Thomson determined the:

NTS 2016 DUHS & JSMU
Chemistry
Atomic Structure
Elimination Tool:

Which one of the following is NOT an advantage of synthetic fiber?

NTS 2016 SMBBMC
Chemistry
Environmental Chemistry
Elimination Tool:

Three different polymers are polymerized to form

Percentage of nitrogen in urea is:

Which of the following has allotropic forms:

Through what phenomenons does heat flow?

PMC Sample 2
Chemistry
Thermochemistry
Elimination Tool:

The shape of [Co(NH3)6]3+ complex is:

UHS 2018
Chemistry
d and f Block Elements
Elimination Tool:

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

NUMS 2014
Chemistry
Atomic Structure
Elimination Tool:

At Equilibrium, which of the following reactions is not affected by pressure?

NUMS Mock 3
Chemistry
Chemical Equilibrium

Example of nucleophile is:

NUMS 2017
Chemistry
Fundamental Principles of Organic Chemistry
Elimination Tool:

The reaction 2RX + 2Na -> RR + 2NaX is an example of:

NUMS 2017
Chemistry
Alkyl Halides and Amines
Elimination Tool:

The unit used to express the relative atomic mass is called?

Chemistry
Introduction to Fundamental Concepts of Chemistry
Elimination Tool:

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

NUMS Mock 2
Chemistry
Chemical Bonding

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

NUMS 2014
Chemistry
Atomic Structure
Elimination Tool:

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

PMC 2020
Chemistry
Chemical Equilibrium
Elimination Tool:

Maleic Acid and Fumaric Acid are:

NUMS 2017
Chemistry
Fundamental Principles of Organic Chemistry
Elimination Tool:

Fe’ 2 + is a cofactor of:

Allotropes are of same?

PMC Practice 2
Chemistry
Macromolecules
Elimination Tool:

The properties of liquid crystals are intermediate between crystals and:

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

Ozone concentration is measured in:

UHS 2016
Chemistry
Environmental Chemistry
Elimination Tool:

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

NTS 2014
Chemistry
Atomic Structure
Elimination Tool:

Proton transfer within a molecule is known as:

Stronger the oxidizing agent, higher is the:

NUMS Mock 2
Chemistry
Electrochemistry

Pick correct pair about the difference between E1 and E2 mechanism of methyl bromide forming an alkene.

NUMS 2019 Cancelled
Chemistry
Alkyl Halides and Amines
Elimination Tool:

The oxidation state of Cl in HClO4 is:

NTS 2019
Chemistry
Solution and Colloids
Elimination Tool:

The average atomic mass of Boron is 10.8. It has two isotopes of masses 10 and 11 respectively. What is the percentage of isotope with the average mass of 10?

NUMS Mock 4
Chemistry
Stoichiometry

Which noble gas has highest ionization energy?

Atomic number of C is 6 and H is 1. How many electrons are present In 1.6 grams of methane?

NTS 2015 DUHS and JSMU
Chemistry
Stoichiometry
Elimination Tool:

Which of the following contains the coordinate covalent bond?

NUMS 2015
Chemistry
Chemical Bonding
Elimination Tool:

Which of the following elements has the highest boiling point?

NTS 2014
Chemistry
s and p Block Elements
Elimination Tool:

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

NTS 2010
Chemistry
Chemical Bonding
Elimination Tool:

Oxygen does not react with:

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

Melting point of Group I-A elements is than Group II-A 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

Which of the following catalysts is used in the decomposition of laughing gas N2O at 1000 K?

2N2O 2N2 + O2

NTS 2016 SMBBMC
Chemistry
Periodicity in Elements
Elimination Tool:

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

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

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

NUMS Mock 3
Chemistry
Atomic Structure

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:

Which of the following is paramagnetic

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?

PreMedPK MDCAT Mock 5
Chemistry
Aldehydes and Ketones
Elimination Tool: