For a reaction 2A + B ⇌ C + D the active mass of B is kept constant and that of A is tripled. It is observed that the rate of reaction:

NTS 2013
Chemistry
Chemical Equilibrium
Elimination Tool:

How will the equilibrium of the following reaction be affected if additional nitrogen is added?

N2(g) + 3H2(g)⇌ 2NH3(g)

NTS 2015 DUHS and JSMU
Chemistry
Chemical Equilibrium
Elimination Tool:

The false statement about lithium is:

NTS 2013
Chemistry
Periodicity in Elements
Elimination Tool:

Value of heat capacity of water is

The Ksp of AgCl is 2.0 x 10^-10-1010 mol2dm-6 . The maximum concentration of Ag+ ions:

NUMS 2015
Chemistry
Chemical Equilibrium
Elimination Tool:

When the number of moles of reactants and products are equal in reversible reactions which parameter would not affect at equilibrium?

NUMS 2020
Chemistry
Chemical Equilibrium
Elimination Tool:

Who discovered positive rays (also called protons) and when?

NUMS Mock 4
Atomic Structure

Which of the following is not a primary pollutant of the troposphere?

NUMS 2019 Cancelled
Chemistry
Environmental Chemistry
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 of the following is not a derivative of benzene?

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

Paramagnetic elements contain:

NTS 2019
Chemistry
d and f Block Elements
Elimination Tool:

For a multi-electron atom, the highest energy level among the following is:

NTS 2013
Chemistry
Atomic Structure
Elimination Tool:

Comparative rates of diffusion of He and SO2 will be _______.

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

Salts of weak bases react with strong acids to give a/an

NUMS Mock 1
Chemistry
Acids, Bases and Salts

Which of the following has six isotopes?

PMC Practice 4
Chemistry
Introduction to Fundamental Concepts of Chemistry
Elimination Tool:

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

NUMS 2016
Chemistry
Aldehydes and Ketones
Elimination Tool:

Alkanes having five to seventeen carbon atoms per molecule are:

NTS 2013
Chemistry
Hydrocarbons
Elimination Tool:

The products of decomposition of Mg(NO3)2are:

NUMS 2017
Chemistry
Periodicity in Elements
Elimination Tool:

Which statement about the following equilibrium is correct?

2SO2 (g) + O2(g) ⇌ 2SO3(g) ΔH= – 395 KJ/ mole

NTS 2019
Chemistry
Chemical Equilibrium
Elimination Tool:

Thermochemistry is very important to learn about _______.

NUMS Mock 3
Chemistry
Thermochemistry

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:

If an electron makes a transition from 4th orbit to inner orbits, then the wavelength for which the radius is maximum, lies in which of the following series?

Proton transfer within a molecule is known as:

IUPAC name of the compound (CH3)2-CH-CH(C2H5)-C(CH3)3 is :

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

) Plastic cannot be recycled by

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

PreMedPK MDCAT Mock 1
Chemistry
Hydrocarbons
Elimination Tool:

What is used in cement manufacture?

Which of the following carboxylic acids will be the most acidic?

NUMS 2016
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

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

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

The octahedral geometry of the complex [Co(NH3)6]2+ has hybridization:

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

Na, Ca & Mg are

The test used to distinguish among primary, secondary, and tertiary alcohols is:

NUMS 2017
Chemistry
Alcohols, Phenols and Ethers
Elimination Tool:

What one is the correct geometry of acetal?

PreMedPK MDCAT Mock 3
Aldehydes and Ketones
Elimination Tool:

Which of the following is correct general formula of aliphatic carboxylic acid ?

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

which type of hybridization doesn’t exist?

Peroxyacetyl nitrate is an irritant to human beings and it effects:

UHS 2011
Chemistry
Environmental Chemistry
Elimination Tool:

Phenol reacts with CH3COCl to give:

NUMS 2019 Reconduct
Chemistry
Alcohols, Phenols and Ethers
Elimination Tool:

Which of following has “higher boiling”and “melting point”?

PreMedPK MDCAT Mock 5
Chemistry
Alcohols, Phenols and Ethers
Elimination Tool:

What is a complex/coordination compound?

PMC Sample 1
Chemistry
Periodicity in Elements
Elimination Tool:

It is the fact that 22.414 cm3 of any gas has a different masses but the same number of

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

Nylon-6,6 is also called:

UHS 2018
Chemistry
Macromolecules
Elimination Tool:

The influence of temperature on reaction rate is predicted by:

NUMS Mock 1
Chemistry
Reaction Kinetics

Maleic Acid and Fumaric Acid are:

NUMS Mock 3
Chemistry
Fundamental Principles of Organic Chemistry

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

NUMS Mock 1
Chemistry
Chemical Bonding

Propane-1 of when combines with FICI In the presence of ZnCl2, It gives:

Which of the following will not undergo aldol condensation?

PreMedPK MDCAT Mock 3
Chemistry
Aldehydes and Ketones
Elimination Tool:

Lysine is a
amino acid

Energy for the endothermic reaction is given a ____ value?

PMC Practice 1
Chemistry
Thermochemistry
Elimination Tool:

The carbonates of alkali metals are soluble in water except:

NUMS Mock 3
Chemistry
s and p Block Elements

Ice floats on the surface of water due to:

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

Which of the following is NOT explained by Kekule structure of benzene?

PMC Sample 2
Chemistry
Hydrocarbons
Elimination Tool:

The E.M.F of a Cell is equals to

PMC Sample 1
Chemistry
Electrochemistry
Elimination Tool:

Choose the correct statement:

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

Stronger the oxidizing agent, higher is the:

NUMS Mock 2
Chemistry
Electrochemistry

The electronic configuration of iron is:

NTS 2011
Chemistry
Atomic Structure
Elimination Tool:

Mass spectrometer can be used to find:

Which one substance is used to remove both H2S and carbon dioxide from biogas?

Which of the following is the highest oxidizing agent?

Name the main product formed as a result of the following reaction

H3C – (CH2)5 – CH3 ————> Product

n-heptane

Conditions: 480 – 550 C, 150 – 399 psi V2O5

NTS 2019
Chemistry
Hydrocarbons
Elimination Tool:

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

NTS 2015 DUHS and JSMU
Chemistry
Atomic Structure
Elimination Tool:

Q.69 Carbon dioxide is an Example of

Orthoboric acid can NOT be obtained by which of the following?

Choose the correct statement:

NUMS 2014
Chemistry
States of Matter – Gases, Liquids and Solids
Elimination Tool:

What is the measure of activation energy in an endothermic reaction?

UHS 2019
Chemistry
Thermochemistry
Elimination Tool:

The correct increasing order of electron affinity value of atoms is:

NUMS Mock 3
Chemistry
Chemical Bonding

Which of the following is the strongest acid?

PMC 2020
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

Buffer solution is a solution which resists change in?

For a gaseous phase reaction, when number of moles of reactants and products are equal:

PMC 2020
Chemistry
Chemical Equilibrium
Elimination Tool:

Which is more soluble in ethanol?

Which is the correct electronic configuration of Chromium (24Cr)?

NUMS Mock 2
Chemistry
d and f Block Elements

Metallic character of the elements:

NTS 2019
Chemistry
Periodicity in Elements
Elimination Tool:

1500•degree Celsius furnace temperature Is maintained at which zone?

Rectified spirits have a percentage of alcohol.

NUMS 2018
Chemistry
Alcohols, Phenols and Ethers
Elimination Tool:

“Zymase”- a group of 14 enzymes, used in the fermentation of starch, is present in:

NTS 2010
Chemistry
Chemistry of Life
Elimination Tool:

The crude petroleum is separated in fraction by:

PMC Practice 4
Chemistry
Industrial Chemistry
Elimination Tool:

In which of the following nitrogen compounds, does N has the highest oxidation state?

NTS 2018
Chemistry
Electrochemistry
Elimination Tool:

Change in Pressure will only affect the substances which are in:

PMC Practice 4
Chemistry
Experimental Techniques in Chemistry
Elimination Tool:

Which of the following gas is more ideal at STP?

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

The carbonic acid which Is named after butter is:

If the ratio of initial concentration of the reagents is greater than the Kc then:

NTS 2011
Chemistry
Chemical Equilibrium
Elimination Tool:

If 9.8 g of sulfuric acid is dissolved in an excess quantity of water, it will yield _______ moles of hydrogen ion ( H+) and _______ mole of sulphate ions (SO4 -2).

PMC Practice 22
Chemistry
Introduction to Fundamental Concepts of Chemistry
Elimination Tool:

To conduct electricity through Ionic Solids, the ions should be:

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

Matter changes from one state to another state on change in ___________.

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

Wohler prepared urea from:

Which of the following is TRUE regarding Methyl Alcohol?

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

Which of the following is the most environmentally friendly source to derive energy?

NUMS 2017
Chemistry
Environmental Chemistry
Elimination Tool:

Le Chatelier’s principle explains effect of all of the following except

Which catalyst is used in the preparation of alkyl halide from alcohols?

PMC Sample 2
Chemistry
Alkyl Halides and Amines
Elimination Tool:

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 rate of chemical reaction:

PMC Sample 2
Chemistry
Reaction Kinetics
Elimination Tool:

Which member of 5A group has no stable isotope?

The most dense element is:

NTS 2013
Chemistry
s and p Block Elements
Elimination Tool:

The only o, p−directing group which is deactivating in nature is:

NTS 2014
Chemistry
Alkyl Halides and Amines
Elimination Tool: