Which one of the following has the highest lattice energy?

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

Triatomic molecules have following movements:

NUMS 2014
Chemistry
Chemical Bonding
Elimination Tool:

75% of a first order reaction is completed in 36 minutes. What is the half life of the reaction?

NUMS 2017
Chemistry
Reaction Kinetics
Elimination Tool:

Rate determining step of a chemical reaction which occur in more than one step depends upon the

PMC Sample 1
Chemistry
Reaction Kinetics
Elimination Tool:

Which is the configuration of Cr?

NUMS 2015
Chemistry
Atomic Structure
Elimination Tool:

A catalyst:

NTS 2016 DUHS & JSMU
Chemistry
Reaction Kinetics
Elimination Tool:

The electronic configuration of iron is:

NTS 2011
Chemistry
Atomic Structure
Elimination Tool:

Bacteria plays an important role in:

PMC 2021 Tested
Chemistry
Environmental Chemistry
Elimination Tool:

In the reaction;

H2 + CO2 H2O + CO

The decrease in the concentration of reactants and products cause the equilibrium to shift:

NUMS 2020
Chemistry
Chemical Equilibrium
Elimination Tool:

The potential difference of an electrochemical cell is measured by:

NUMS Mock 2
Chemistry
Electrochemistry

Au3+ has __________ configuration.

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

C6H5 Is:

Electronic configuration of M2+ ion is 2, 8, 14 and its atomic weight is 56 amu. The number of neutrons in its nucleus are:

NTS 2017
Chemistry
Atomic Structure
Elimination Tool:

Iso-Butyl alcohol has following carbon attached to hydroxyl group:

NUMS Mock 3
Chemistry
Alcohol, Phenols, and Ethers

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

NUMS 2014
Chemistry
Hydrocarbons
Elimination Tool:

Allotropes are of same?

PMC Practice 2
Chemistry
Macromolecules
Elimination Tool:

Acetylene on reacting with ammonium silver nitrate gives.

NUMS 2014
Chemistry
Hydrocarbons
Elimination Tool:

According to which phenomenon, “the properties of elements are the periodic function of their atomic number.”

NTS 2012
Chemistry
Periodicity in Elements
Elimination Tool:

The Haber Process is used to produce ammonia commercially according to the following equilibrium: N2(g) + 3H2g = 2NH3g + energy Which of the following conditions will produce the highest yield of ammonia?

The vapour pressure of water at room temperature is 23.8 mm Hg. The vapour pressure of an aqueous solution of sucrose with mole fraction 0.2 is equal to:

NUMS 2015
Chemistry
Stoichiometry
Solution and Colloids
Elimination Tool:

1 amu is?

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:

A compound has an empirical (simple) formula, C2H2O. If the experimental molecular weight is found to be in the range 160-170, the molecular formula of this compound is:

(Atomic weight: C = 12.1, H = 1.008, O = 16).

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

Gases can be converted into liquid by:

Bond energy:

I. is the energy required to break a bond between two atoms in a diatomic molecule

II. Is taken as the energy released in forming a bond form free atoms

III. Is the measure of the strength of bond

NTS 2011
Chemistry
Chemical Bonding
Elimination Tool:

Thermochemistry is very important to learn about _______.

NUMS Mock 3
Chemistry
Thermochemistry

Which pair has species with different shapes?

NTS 2016 SMBBMC
Chemistry
Chemical Bonding
Elimination Tool:

Which of the following Is the reason that Iron is the most abundant element?

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

PMC 2020
Chemistry
Chemical Bonding
Elimination Tool:

Le Chatelier Principle is about:

NUMS Mock 1
Chemistry
Chemical Equilibrium

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

NTS 2013
Chemistry
Alkyl Halides and Amines
Elimination Tool:

Hydrolysis of acyl chloride results in the formation of:

NUMS Mock 4
Chemistry
Carboxylic Acids and its Derivatives

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

NTS 2014
Chemistry
Electrochemistry
Elimination Tool:

The radii of the second orbit of the hydrogen atom calculated from Bohr’s model is:

NTS 2013
Chemistry
Atomic Structure
Elimination Tool:

Catenation is a process in which carbon shows the properties of:

NTS 2010
Chemistry
Hydrocarbons
Elimination Tool:

All are dehydrating agents for alcohols to produce alkene except:

NTS 2016 DUHS & JSMU
Chemistry
Macromolecules
Elimination Tool:

What is the chemical formula for plaster of Paris?

NTS 2010
Chemistry
s and p Block Elements
Elimination Tool:

Which of the following has maximum Hydration power?

NUMS 2015
Chemistry
Chemical Bonding
Elimination Tool:

Diameter of Hydrogen atom is?

Which of the following compounds will form a hydrocarbon on reaction with Grignard reagent?

PreMedPK MDCAT Mock 4
Chemistry
Hydrocarbons
Elimination Tool:

What will be the mass in grams of 12 gram atom of carbon atoms?

Stronger the oxidizing agent, greater is the:

NUMS 2020
Chemistry
Electrochemistry
Elimination Tool:

At 25 C, the equivalent conductance at infinite dilution of HCl solution is 425 ohm 1 cm 2 Equiv 1 while its specific conductance is 3.825 ohm 1 cm 1. If the apparent degree of dissociation is 90%, the normality of the solution is:

NUMS 2016
Chemistry
Solution and Colloids
Elimination Tool:

Diameter of an atom is in the range of?

NUMS 2014
Chemistry
Atomic Structure
Elimination Tool:

Conversion of Electrical energy into chemical energy is

PMC Sample 2
Chemistry
Electrochemistry
Elimination Tool:

Primary Alcohol is produced by reactions of Grignard’s reagent with _________ followed by hydrolysis in an acidic medium.

PreMedPK MDCAT Mock 1
Chemistry
Alcohols, Phenols and Ethers
Elimination Tool:

Which of the following statements is NOT true for the first law of thermodynamics?

NTS 2014
Chemistry
Thermochemistry
Elimination Tool:

The structure of cyclohexane is:

PMC Sample 3
Chemistry
Hydrocarbons
Elimination Tool:

Vithich of the following Alkyl Halide is least reactive?

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

The number of moles of solute dissolved per dm) of the solution is called

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

NUMS 2014
Chemistry
s and p Block Elements
Elimination Tool:

0.5 molar solution NaOH contains:

NUMS 2020
Chemistry
Solution and Colloids
Elimination Tool:

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

NUMS 2014
Chemistry
Thermochemistry
Elimination Tool:

Which of the following is not a nucleophile?

NTS 2010
Chemistry
Alkyl Halides and Amines
Elimination Tool:

The mechanism of reaction can be understood by

PMC Practice 6
Chemistry
Experimental Techniques in Chemistry
Elimination Tool:

A liquid crystalline state exists between two temperatures i.e melting temperature and ____ temperature.

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

Number of unpaired electrons in ferrous ion is:

) Plastic cannot be recycled by

Two rocket fuels below are determined by their high performance.

N2H4(l) + O2(g) -> N2(g) + 2H2O(l) ΔH= -632 kJ

H2 (g) + ½ O2(g) -> H2O(l) ΔH = -286 kJ

If equal masses of hydrazine and hydrogen are used, which of the following has better performance?

NUMS 2019 Cancelled
Chemistry
Thermochemistry
Elimination Tool:

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:

Acetylene polymerizes to make:

PMC Sample 3
Chemistry
Hydrocarbons
Elimination Tool:

The major source of unburnt hydrocarbons in the atmosphere is / are:

NUMS 2016
Chemistry
Hydrocarbons
Elimination Tool:

Acetone and Chloroform are soluble into each other due to:

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

which type of hybridization doesn’t exist?

Boyle’s law is stated as:”The product of pressure and volume of a fixed amount of gas at constant temperature is a _____ quantity

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

Which of the following reagent is required for preparation of acyl chloride (CH3COCl) from ethanoic aicd?

UHS 2019
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

Atoms in solids are

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

“The sum of all the exponents to which the molar concentration in terms in the rate equation are raised” defines:

NUMS 2016
Chemistry
Reaction Kinetics
Elimination Tool:

Enzymes speed up the reaction upto:

PMC Practice 3
Chemistry
Macromolecules
Elimination Tool:

Which of the following shows the Planck’s quantum theory?

NUMS Mock 3
Chemistry
Atomic Structure

The mass of proton is ______ times heavier than ______.

NUMS Mock 4
Chemistry
Atomic Structure

The ratio of σ to π bonds in benzene is:

NUMS 2019 Reconduct
Chemistry
Hydrocarbons
Elimination Tool:

The ionization of Hydrogen atom gives:

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

Polyester is used in:

PMC 2021 Tested
Chemistry
Macromolecules
Elimination Tool:

Which is not a meta directing group:

NUMS Mock 1
Chemistry
Fundamental Principles of Organic Chemistry

What type of chemical reaction is this?
CH3CHO + NH3 -> CH3CH(OH)NH2

NUMS 2019 Cancelled
Chemistry
Aldehydes and Ketones
Elimination Tool:

There is double bond in oleic acid between carbon numbers:

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

NUMS 2016
Chemistry
Macromolecules
Elimination Tool:

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

NUMS Mock 4
Atomic Structure

Number of molecules in 1 dm3 of water will be almost

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

11) Hydrogen has properties similar to:

Which one of the following is an example of a condensation polymer?

UHS 2014
Chemistry
Industrial Chemistry
Elimination Tool: