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:

Strongest acid among the following is:

NUMS Mock 3
Chemistry
Carboxylic Acids and its Derivatives

Which of the following has maximum Hydration power?

NUMS Mock 3
Chemistry
Chemical Bonding

The rate of a gaseous reaction Is given by K [A] [B]. If the volume of the vessel containing these gases is reduced to 1/4th of the initial volume, the rate of reaction relative to the original rate would be:

NUMS 2016
Chemistry
Reaction Kinetics
Elimination Tool:

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:

Phenol is a(n) ________ liquid?

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

d subshell has

In Paper industry, sodium sulphite is buffered with

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:

Fractions of crude petroleum can be obtained by using ___________.

PMC Practice 3
Chemistry
Industrial Chemistry
Elimination Tool:

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

NUMS 2017
Chemistry
Environmental Chemistry
Elimination Tool:

If any amino acids contain greater number of NH2, it is:

NUMS 2019 Cancelled
Chemistry
Alkyl Halides and Amines
Elimination Tool:

If you need to produce carbon dioxide from 12 grams of carbon, how many grams would you need?

The stability in the following structure is due to the:

NUMS Mock 4
Chemistry
Chemical Bonding

Carboxylic acids can be reduced to corresponding alcohols. Which of the following reagent can be used for this purpose?

UHS 2019
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

When was electron discovered?

Isomerism due to shifting of proton from one atom to another in a same molecule is known as:

NUMS 2020
Chemistry
Fundamental Principles of Organic Chemistry
Elimination Tool:

Which of the following has the highest value of pKa?

NUMS 2019 Reconduct
Chemistry
Chemical Equilibrium
Elimination Tool:

H —CHO is:

Which of the following reactions is used for the production of alcohols on industrial scale?

UHS 2019
Chemistry
Alcohols, Phenols and Ethers
Elimination Tool:

Which of the following is the percentage of the original quantity of a radioactive material left after five half-lives approximately.

NUMS Mock 4
Physics
Nuclear Physics

The ratio of σ to π bonds in benzene is:

NUMS 2019 Reconduct
Chemistry
Hydrocarbons
Elimination Tool:

What is the nature of “hydrated tricalcium aluminate” (3 Ca. Al203. 6 H20) in the setting of cement?

Alkaline KMnO4 converts ethylene into:

NUMS 2014
Chemistry
Hydrocarbons
Elimination Tool:

The common features, among the species CN, CO and NO are:

NUMS 2016
Chemistry
Chemical Bonding
Elimination Tool:

The reactivity of alcohol when 0-H bonds break

Most abundant salt of sodium in nature is:

NTS 2017
Chemistry
s and p Block Elements
Elimination Tool:

Which of the following orbital will be filled first than 4p?

NUMS 2020
Chemistry
Atomic Structure
Elimination Tool:

The reaction: Cl2 + H2O→ HCl + HOCl is an example of:

NUMS Mock 4
Chemistry
Electrochemistry

When two moles of H2 and one mole of O2 react to form H2O, 484 KJ heat is evolved. What is Δ Hf for one mole of H2O?

NUMS 2019 Reconduct
Chemistry
Thermochemistry
Elimination Tool:

Higher Transition elements are:

The following changes to the system at equilibrium have no effect on Kc except:

NUMS 2017
Chemistry
Chemical Equilibrium
Elimination Tool:

An essential condition for the Optical Activity of an organic compound is:

NUMS 2015
Chemistry
Fundamental Principles of Organic Chemistry
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:

Reaction by Grignard reagent are mostly

Which of the following elements has the lowest ionistion enthalpy?

PMC Sample 2
Chemistry
Periodicity in Elements
Elimination Tool:

Which of the following is the formula of Potassium permanganate?

Colligative Properties depend upon: a

IUPAC name of C6H5 – CH2 – CH2 – NH2 is:

PMC 2020
Chemistry
Fundamental Principles of Organic Chemistry
Elimination Tool:

Ionization energy depends upon:

2 moles of octane ( C8H18) burn with 25 moles of oxygen (02) and produced __ moles of carbon dioxide along with 18 moles of water.

PMC Practice 20
Chemistry
Introduction to Fundamental Concepts of Chemistry
Elimination Tool:

PVC is created from which halogen

When two moles of H2 and one mole of O2 react to form H2O, 484 KJ heat is evolved. What is Δ Hf for one mole of H2O?

NUMS Mock 3
Chemistry
Thermochemistry

Polymer having a characteristics odour and mostly used as an adhesive material is

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:

The classification of monohydric alcohols is due to

PMC Sample 3
Chemistry
Alcohols, Phenols and Ethers
Elimination Tool:

Which of the following intermediate has the complete octet around the carbon atom.

NUMS 2018
Chemistry
Fundamental Principles of Organic Chemistry
Elimination Tool:

The chemical reaction in which reactions require high amount of activation energy are generally:

NTS 2014
Chemistry
Reaction Kinetics
Elimination Tool:

The crystals formed as a result of vander der Waals interactions are:

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

The Lattice energy is also called as:

PMC 2020
Chemistry
Chemical Bonding
Elimination Tool:

Water and mercury can be separated by:

Solubility of Borax decahydrate at 100C is

_______ is a macromolecule found in blood.

PMC Practice 23
Chemistry
Introduction to Fundamental Concepts of Chemistry
Elimination Tool:

Which of the following statement about Avogadro’s hypothesis is correct?

Chemistry
Introduction to Fundamental Concepts of Chemistry
Elimination Tool:

Fe’ 2 + is a cofactor of:

The carbon number of gasoline is:

NTS 2019
Chemistry
Hydrocarbons
Elimination Tool:

Exothermic Reactions heat is

PMC Sample 2
Chemistry
Thermochemistry
Elimination Tool:

Which of the following has the highest value of pKa?

NUMS Mock 1
Chemistry
Chemical Equilibrium

Acetylene on reacting with ammonium silver nitrate gives.

NUMS 2014
Chemistry
Hydrocarbons
Elimination Tool:

Phenol is derived from?

Which of the following are not usually named using IUPAC system?

Percentage of Chlorine present In bleaching powder Is:

How many chain isomers are shown by C5H12?

PreMedPK MDCAT Mock 4
Chemistry
Hydrocarbons
Elimination Tool:

The osmotic pressure of equimolar solutions of BaCl2, NaCl and sucrose will be in the order:

NUMS 2016
Chemistry
Solution and Colloids
Elimination Tool:

The false statement regarding saline hydrides is:

NTS 2014
Chemistry
s and p Block Elements
Elimination Tool:

Graphite has a structural similarity with:

PMC Practice 2
Chemistry
Macromolecules
Elimination Tool:

Mass spectrometer can be used to find:

Type of reactants or product decides the nature of method adapted for finding

PMC Sample 1
Chemistry
Reaction Kinetics
Elimination Tool:

Example of nucleophile is:

NUMS Mock 3
Chemistry
Fundamental Principles of Organic Chemistry

From a mixture of CO2and H2gases, CO2can be separated by passing the mixture through:

NTS 2013
Chemistry
Solution and Colloids
Elimination Tool:

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

Q.34 Which of these have a positive value of enthalpy?

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:

The isomers due to the unequal distribution of carbon atoms on either side of the functional group belonging to the same homologous series are called:

NUMS 2014
Chemistry
Fundamental Principles of Organic Chemistry
Elimination Tool:

Formation of carbon dioxide hinders in calculating the heat of formation of:

PMC Practice 1
Chemistry
Thermochemistry
Elimination Tool:

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

NTS 2017
Chemistry
Alkyl Halides and Amines
Elimination Tool:

Hydration energy increases with

4 gram atoms of carbon has a mass of:

Formula mass is considered for compounds instead of their molecular mass.

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

The reaction in which a molecule is broken down by Water is known as

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

NUMS 2016
Chemistry
Macromolecules
Elimination Tool:

) Which one of the following is metalloid?

IUPAC name of propionaldehyde is:

Which one is not related to evaporation?

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

The term “Nucleophile” means:

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

PMC 2020
Chemistry
Chemical Equilibrium
Elimination Tool:

Which one of the following is not a heterocyclic compound?

PMC Sample 3
Chemistry
Hydrocarbons
Elimination Tool:

Example of metamerism is:

The formula of Chile Saltpeter is?

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

Metals belonging to the same group in the periodic table are

NUMS 2014
Chemistry
s and p Block Elements
Elimination Tool:

Magnesium oxide is used in the making of the lining of blast furnaces. It is extracted from seawater as follows. Aqueous calcium hydroxide is added to seawater.

Ca(OH)2 (aq) + MgCl2 (aq) + Mg(OH)2 (s) + CaCl2 (aq)

The magnesium hydroxide is then filtered off and roasted.

Which of the following comparisons between calcium and magnesium explains why magnesium hydroxide forms?

NTS 2013
Chemistry
Periodicity in Elements
Elimination Tool:

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:

Which one of the following was used as one of the earliest antiseptic and disinfectants?

UHS 2015
Chemistry
Industrial Chemistry
Elimination Tool: