The following sketch shows the variation in a physical property of third period elements against their atomic numbers:

What physical property is plotted in this sketch?

NUMS Mock 2
Chemistry
Periodicity in Elements

Which of the following statements best describes how a catalyst works

NUMS 2018
Chemistry
Reaction Kinetics
Elimination Tool:

NH3 (amine) is an example of:

NTS 2015 DUHS and JSMU
Chemistry
Alkyl Halides and Amines
Elimination Tool:

Chloroform is used as the following except:

NUMS 2015
Chemistry
Macromolecules
Elimination Tool:

Which quantum number decides energy of orbitals?

Which class of compounds cannot show positional isomerism?

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

Which of the following best describes the emission spectrum of atomic hydrogen?

NTS 2015 DUHS and JSMU
Chemistry
Atomic Structure
Elimination Tool:

Chemical properties of an atom depends upon number of

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 correct increasing order of electron affinity value of atoms is:

NUMS Mock 3
Chemistry
Chemical Bonding

From the following which is used as bleaching agent

Rate of effusion of a gas depends upon:

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

Tertiary alkyl  hallides follow which of the following mechanism when attacked by a Nucleophile?

Which catalyst is used to oxidize benzene rings?

NUMS 2019 Reconduct
Chemistry
Hydrocarbons
Elimination Tool:

Sodium Is prepared by

d subshell has

What is the catalyst used in the Haber process?

H₂ + N₂ ⟶ NH₃

PMC 2021 Tested
Chemistry
Industrial Chemistry
Elimination Tool:

Sulfur with HI acts as a:

The formula of Chile Saltpeter is?

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

Markownikoff’s rule is best applicable to the reaction between

NUMS 2018
Chemistry
Alkyl Halides and Amines
Elimination Tool:

Which of the following represent the formula of Ketone?

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:

Periodic table is divided into groups A and 6:

Aluminum silicate is used In:

Point out the property which is not characteristic of alkali metal:

NUMS 2014
Chemistry
s and p Block Elements
Elimination Tool:

The amount (in liters) of Oxygen at STP that is required for the combustion of 4gm of ethylene is :

NUMS Mock 2
Chemistry
Stoichiometry

Ketones undergo reaction with which compound in the presence of acid to form oximes

What is the volume in cm3 of 3.01 x 10^23 molecules of O2 gas at S.T.P.?

NTS 2017
Chemistry
States of Matter – Gases, Liquids and Solids
Elimination Tool:

The break down of molecular ions from natural productsgive important information about?

Chemistry
Introduction to Fundamental Concepts of Chemistry
Elimination Tool:

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

PMC Sample 2
Chemistry
Thermochemistry
Elimination Tool:

Which type of movement is shown by the atoms of the solid?

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

In those reactions where determination of enthalpy value is difficult by experiments, in such cases enthalpy value can be calculated by:

NTS 2014
Chemistry
Thermochemistry
Elimination Tool:

1 atmospheric pressure is equal to

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:

An example of a solution not in equilibrium is:

NTS 2016 DUHS & JSMU
Chemistry
States of Matter – Gases, Liquids and Solids
Elimination Tool:

NO2 in atmosphere absorbs moisture to form?

All amino acids contain the functional group:

NTS 2017
Chemistry
Alkyl Halides and Amines
Elimination Tool:

Number of molecules in 1 dm3 of water will be almost

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

The process of bringing an element in use after its complete half-life is:

Which of the following has greatest electronegativity?

cr. be used as a liquid fertilizer?

Phenol is reduced to benzene on reaction with:

The unit of viscosity is:

NTS 2012
Chemistry
States of Matter – Gases, Liquids and Solids
Elimination Tool:

In Cannizzaro’s reaction, Benzyl alcohol is obtained from?

PreMedPK MDCAT Mock 4
Chemistry
Alcohols, Phenols and Ethers
Aldehydes and Ketones
Elimination Tool:

X is a salt that decomposes in water.

What is the reason for its decomposition?
e-+ X3+→ X2+ Ecell= 1.91 V

NUMS 2018
Chemistry
Electrochemistry
Elimination Tool:

) Which one of the following is metalloid?

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 number of isomers of C3H7-Cl are _______

NUMS 2017
Chemistry
Fundamental Principles of Organic Chemistry
Elimination Tool:

Benzyl acetate gives us which flavour?

NUMS 2019 Cancelled
Chemistry
Carboxylic Acids and its Derivatives
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:

Spectrometry is used when reactants and products absorb _____.

PMC Practice 7
Chemistry
Introduction to Fundamental Concepts of Chemistry
Elimination Tool:

An SN2 reaction at an asymmetric carbon of a compound always gives:

NTS 2014
Chemistry
Alkyl Halides and Amines
Elimination Tool:

Polymerization of ethene produces which of the following polymers?

PMC Practice 3
Chemistry
Macromolecules
Elimination Tool:

Formyl group is present in

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

Precipitation occurs when the product of ionic concentrations is:

NUMS 2019 Reconduct
Chemistry
Chemical Equilibrium
Elimination Tool:

Aluminum reacts with H2SO4 to produce

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

PMC Sample 2
Chemistry
Chemical Equilibrium
Elimination Tool:

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

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

PMC 2020
Chemistry
Hydrocarbons
Elimination Tool:

Which of the following transition metals in its ground state have unpaired electrons in an s-orbital?

NUMS 2015
Chemistry
d and f Block Elements
Elimination Tool:

For a sub shell I = 2 and m = -2, -1, 0 , +1, +2, it implies that it has ____ space orientation.

NUMS Mock 4
Chemistry
Atomic Structure

Which one of the following alkaline earth metal carbonates is thermally the most stable?

NUMS 2020
Chemistry
s and p Block Elements
Elimination Tool:

Which of the following is used as coagulation for latex in rubber industry

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:

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

NUMS Mock 4
Chemistry
Aldehydes and Ketones

Which of the following compounds will give a secondary alcohol after reaction with NaBH4?

PreMedPK MDCAT Mock 3
Chemistry
Alcohols, Phenols and Ethers
Elimination Tool:

Which of the following compounds has the empirical formula, (CH2O) and reacts with sodium hydroxide?

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

Ionic radius in period from left to right:

NUMS 2014
Chemistry
Periodicity in Elements
Elimination Tool:

The formula of “rock salt” is:

NTS 2012
Chemistry
Environmental Chemistry
Elimination Tool:

Which of the following is not a property of liquid?

Identify the common name of the following compound:

CH₃CH₂COCH₂OH

PreMedPK MDCAT Mock 1
Chemistry
Aldehydes and Ketones
Fundamental Principles of Organic Chemistry
Elimination Tool:

Which of the following metals does NOT liberate hydrogen in reaction with acids?

NUMS 2019 Reconduct
Chemistry
Electrochemistry
Elimination Tool:

The formula of Chile Peter salt is

Fe’ 2 + is a cofactor of:

Ionization energy depends upon:

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:

Oxidation is defined as:

Which of the following is a balanced redox equation?

NUMS 2020
Chemistry
Electrochemistry
Elimination Tool:

For a gaseous reaction, the increase in pressure will shift the equilibrium in a direction:

NUMS 2020
Chemistry
Chemical Equilibrium
Elimination Tool:

Which one of the following free radical is most stable:

NUMS 2017
Chemistry
Fundamental Principles of Organic Chemistry
Elimination Tool:

Which compound shows maximum hydrogen bonding with water?

NUMS 2015
Chemistry
Chemical Bonding
Elimination Tool:

The substance which conducts electricity by the movement of ions:

NUMS 2014
Chemistry
Chemical Bonding
Elimination Tool:

The thermal energy at constant pressure is called:

PMC 2020
Chemistry
Thermochemistry
Elimination Tool:

The overall positive reduction potential value predicts that process is:

NUMS 2015
Chemistry
Electrochemistry
Elimination Tool:

All the collisions between the particles of gases are elastic in nature. What is meant by “Elastic Collisions”?

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

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

If both double and triple bonds are present in the chain, double bond is given the ______

PMC Sample 2
Chemistry
Hydrocarbons
Elimination Tool:

Which of the following condition is constant in Bomb calorimeter?

PMC Practice 1
Chemistry
Thermochemistry
Elimination Tool:

C6H5C≡N and C6H5N≡C exhibits which type of isomerism:

NTS 2015 SMBBMC
Biology
Fundamental Principles of Organic Chemistry
Elimination Tool:

Solubility of carboxylic acids ______?

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

With which of the following alcohols do not react to form alkyl halides?

Which of following transition complex will have most stable square planar structure?