Which of the following shows H-bonding?

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

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

NTS 2014
Chemistry
Reaction Kinetics
Elimination Tool:

Maximum ____ electrons can be placed in one orbital:

NUMS 2020
Chemistry
Atomic Structure
Elimination Tool:

What is NOT true about K2Cr2O7?

Which enzyme is used when sugar In molasses is converted to glucose and fructose?

Which of the following are the fundamental ways of transferring energy?

NUMS 2014
Chemistry
Thermochemistry
Elimination Tool:

In 3rd series of transition elements, paramagnetic behaviour is maximum for Mn +2 and :

PMC 2020
Chemistry
d and f Block Elements
Elimination Tool:

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

The e/m value is maximum for _____ gas becauseof _____ value of “m” for positive rays obtained from it.

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

Loose electrons present in outer shell meansv

The smallest number of molecules are present in?

Chemistry
Introduction to Fundamental Concepts of Chemistry
Elimination Tool:

Upon which factor is vapour pressure not dependent:

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

In a reaction:

A+B 2C

When equilibrium was attained, the concentration was

[A] = [B] = 4 moles/dm3

[C]= 6 moles/dm3
The equilibrium constant Kc of this reaction is:

NTS 2011
Chemistry
Chemical Equilibrium
Elimination Tool:

Why is it necessary to distill aldehyde formed from oxidation of primary alcohol through acidified potassium dichromate (VI) solution or acidified sodium dichromate (VI) solution?

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

Each half reaction in ion electron method is balanced by adding:

PMC Sample 1
Chemistry
Electrochemistry
Elimination Tool:

Common Ion effect is useful application in?

NTS 2015 SMBBMC
Chemistry
Chemical Equilibrium
Elimination Tool:

A mole of a substance contains _____ particles.

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

The effect of temperature on the rate of a reaction is given by:

NUMS 2020
Chemistry
Reaction Kinetics
Elimination Tool:

Which of the following is TRUE regarding Methyl Alcohol?

NTS 2011
Chemistry
Alcohols, Phenols and Ethers
Elimination Tool:

The four bonds of carbon in methane are directed towards the corners of a:

NUMS 2014
Chemistry
Hydrocarbons
Elimination Tool:

If the value of Kc is large than the ratio (products)/(reactants), the reaction:

Water has maximum density at:

NUMS 2019 Reconduct
Chemistry
States of Matter – Gases, Liquids and Solids
Elimination Tool:

Which of the following method is used to prepare Ethylene glycol from ethene?

PMC Practice 1
Chemistry
Hydrocarbons
Elimination Tool:

There is double bond in oleic acid between carbon numbers:

C12H22O11+ conc. H2SO4—> 12 C + ? + H2SO4

NTS 2016 SMBBMC
Chemistry
Stoichiometry
Elimination Tool:

During oxidation of unsymmetrical ketones which atom is oxidized?

PreMedPK MDCAT Mock 5
Aldehydes and Ketones
PMC Practice 28
Elimination Tool:

Ca(OH)2 is sparingly soluble having solubility value 6.5 x 10-6. What’ll be its solubility:

UHS 2017 Reconduct
Chemistry
Solution and Colloids
Elimination Tool:

sp3 hybridization in CH4 gives it ______ geometry.

NTS 2012
Chemistry
Chemical Bonding
Elimination Tool:

Which of the following process is not use for the preparation of alcohol?

By increasing which of the following factor polarizability increases?

PMC Practice 1
Chemistry
Periodicity in Elements
Elimination Tool:

The oxidation potential standard hydrogen electrode is arbitrarily taken as:

NTS 2019
Chemistry
Electrochemistry
Elimination Tool:

A sample of gas weighs 1.25 g, at 28 C occupying a volume of 2.50 x 10-2 ml and its pressure is 715 torr. What is the molar mass in grams?

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

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

NTS 2013
Chemistry
Atomic Structure
Elimination Tool:

Identify from the following the example in which the complex is an anion:

NTS 2016 SMBBMC
Chemistry
d and f Block Elements
Elimination Tool:

Oxidation Number of all the elements in the free state is?

PMC Practice 5
Chemistry
d and f Block Elements
Elimination Tool:

Strongest acid among the following is:

NUMS Mock 3
Chemistry
Carboxylic Acids and its Derivatives

A solid melts sharply just above 100 degree centigrade. it does not conduct electricity even when molten. It has weak Vander waal’s forces. What is the structure of the solid most likely to be?

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

The dipole moments of the given molecules (BF3, NF3, NH3) are such that:

NTS 2015 DUHS and JSMU
Chemistry
Chemical Bonding
Elimination Tool:

Half-life of iron is? (A=59)

The transparent plastic used to make combs and hairbrushes is called:

NTS 2018
Chemistry
Macromolecules
Elimination Tool:

Which of the following Is formula of Benzyl Alcohol?

Which of the following is the correct IUPAC name?

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

The enthalpy change accompanying the gain of an electron by a neutral gaseous atom to form a negative ion is called:

NTS 2010
Chemistry
Thermochemistry
Elimination Tool:

Whidi group has coinage metals?

The process of changing a solid directly into gas upon heating is known as:

Precipitation occurs when the product of ionic concentrations is:

NUMS 2019 Reconduct
Chemistry
Chemical Equilibrium
Elimination Tool:

If electrons are loosely packed then:

The type of isomerism in which the position of functional group changes is called?

Which one of the following is not a heterocyclic compound?

PMC Sample 3
Chemistry
Hydrocarbons
Elimination Tool:

The oxidation number of all the elements in the free state is:

NTS 2012
Chemistry
Electrochemistry
Elimination Tool:

Vapor pressure of a liquid depends upon

Which one has fruity smell?

The rate of reaction:

NUMS 2020
Chemistry
Reaction Kinetics
Elimination Tool:

If 4.6 gm of ethyl alcohol and 6.0 gm of acetic acid is kept at a constant temperature until equilibrium was established, 2.0 gm of unused acetic acid were present. What is the Kc?

NTS 2016 SMBBMC
Chemistry
Chemical Equilibrium
Elimination Tool:

In the reaction, R-C≡C-R → the reagent used to convert alkyne into trans alkene is:

NTS 2014
Chemistry
Hydrocarbons
Elimination Tool:

If Kc = 1, then reaction is:

SN2 can be best carried out with:

NUMS 2015
Chemistry
Alkyl Halides and Amines
Elimination Tool:

Example of a nucleophile is:

NUMS Mock 1
Chemistry
Fundamental Principles of Organic Chemistry

Which of the following is the correct order of electronegativity (from highest to lowest)?

NTS 2015 SMBBMC
Biology
s and p Block Elements
Chemical Bonding
Elimination Tool:

Calculate the root mean square speed of He atoms at 295 K?

NUMS 2019 Cancelled
Chemistry
States of Matter – Gases, Liquids and Solids
Elimination Tool:

The unit cell parameters of the monoclinic system are:

NTS 2019
Chemistry
States of Matter – Gases, Liquids and Solids
Elimination Tool:

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

How many bonds are there in CO?

The _____ study of composition of pure substance in 17th century clearly shows that few elements are components of many substances

PMC Practice 29
Chemistry
Introduction to Fundamental Concepts of Chemistry
Elimination Tool:

Which of the following is the safest way to dry crystals during crystallization?

……is a technique to separate impurities from chemical products:

NUMS 2014
Chemistry
Macromolecules
Elimination Tool:

Which of the following hybrid orbitals has maximum “s” character?

PMC 2020
Chemistry
Chemical Bonding
Elimination Tool:

Which of the following has the higher bond forces amount its molecules

The unit used to express the relative atomic mass is called

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

Which of the following is not a derivative of benzene?

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

Human blood maintains its pH between

UHS 2016
Chemistry
Solution and Colloids
Elimination Tool:

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

NUMS 2018
Chemistry
Alcohols, Phenols and Ethers
Elimination Tool:

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

Change in extensive property is proportional to the change in ______ of material.

NUMS 2018
Chemistry
States of Matter – Gases, Liquids and Solids
Elimination Tool:

When 18 x 10-3 moles/dm3 of acetic acid react with 22 x 10-3 moles/dm3 of ethyl alcohol to form 40 x 10-3 moles/dm3 of ethyl acetate and 40 x 10-3 moles/dm-3 of water. Find the value of equilibrium constant (kc):

NTS 2010
Chemistry
Chemical Equilibrium
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 ligand field effect splits five degenerate d-orbitals into two sets with different energies, the pair of high energy degenerate orbitals is:

NTS 2019
Chemistry
d and f Block Elements
Elimination Tool:

Acetylene upon heating at 300 C gives:

Benzene is prepared in laboratory by distillation of phenol with

What substrates are required to add a NO2 group to benzene?

NTS 2013
Chemistry
Alkyl Halides and Amines
Elimination Tool:

Which of the following is not an isomer of other three:

Which of the following fertilizers has the maximum percentage of nitrogen in solid state?

NUMS 2016
Chemistry
Macromolecules
Elimination Tool:

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

Electrophile in sulphonation of benzene is:

PreMedPK MDCAT Mock 4
Chemistry
Hydrocarbons
Elimination Tool:

Which one of these is/are gasses?

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

NTS 2015 DUHS and JSMU
Chemistry
Atomic Structure
Elimination Tool:

Spectrometry is used when reactants and products absorb _____.

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

Definition of Raoult’s law is,