EDTA ion is a ________ ligand.

NTS 2012
Chemistry
d and f Block Elements
Elimination Tool:

The pH of a solution can be kept constant by:

2022 PMC Test 2
Chemistry
Solution and Colloids
Elimination Tool:

Tincture of Iodine is:

NUMS 2015
Chemistry
Aldehydes and Ketones
Elimination Tool:

Which of the following shows H-bonding?

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

Which functional group is not a double bond?

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

Polystyrene is an additional polymer. Which one of the following structures represents
the monomer of polystyrene?

UHS 2014
Chemistry
Environmental Chemistry
Elimination Tool:

The melting point of NaCl is very high, 801°C. It is reduced to 600°C by the addition of _______ in Down’s process.

NTS 2018
Chemistry
Macromolecules
Elimination Tool:

phenol, and ethers are the derivatives of?

Hydration energy of sodium Ion Is:

A student mixed ethyl alcohol with a small amount of sodium dichromate and added it to the hot solution of dilute sulphuric acid. A vigorous reaction took place. He distilled the product formed immediately. What was the product?

PreMedPK MDCAT Mock 3
Chemistry
Aldehydes and Ketones
Elimination Tool:

About 80% of ammonia is used for the production of

UHS 2015
Chemistry
Environmental Chemistry
Elimination Tool:

From the following, only one amino acid has two identical groups attached to its central atom. Which amino acid out of the following matches the description given above.

NUMS Mock 3
Chemistry
Chemistry of Life

Which of the following has the highest electrical conductivity?

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

In the production of wrought iron Mg, Si, and P are removed in the form of:

PMC Practice 3
Chemistry
Industrial Chemistry
Elimination Tool:

For the reaction, A(g) -> products:

When the concentration of A(g) doubles, the rate of reaction increases four folds, which means it is:

PMC 2020
Chemistry
Reaction Kinetics
Elimination Tool:

Rocky crust of earth is mainly composed of?

Which of the following contains the coordinate covalent bond?

NUMS 2015
Chemistry
Chemical Bonding
Elimination Tool:

Who started the development of the First Periodic Table?

silicon can be obtained from which one of the following compounds

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:

Le Chatelier Principle is about:

NUMS Mock 1
Chemistry
Chemical Equilibrium

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:

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

GN lewis described which one of the following bonds?

NTS 2015 SMBBMC
Chemistry
Chemical Bonding
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:

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 order of reactivities of the following alkyl halides for an SN2 reaction is:

NUMS 2016
Chemistry
Alkyl Halides and Amines
Elimination Tool:

The ionization of Hydrogen atom gives:

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

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

NUMS Mock 2
Chemistry
Periodicity in Elements

Covalent bond is stronger than hydrogen bond by:

The unit cell parameters of the monoclinic system are:

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

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

NUMS 2014
Chemistry
s and p Block Elements
Elimination Tool:

Percentage of Chlorine present In bleaching powder Is:

Which of the following condition is constant in Bomb calorimeter?

PMC Practice 1
Chemistry
Thermochemistry
Elimination Tool:

The compression factor (compressibility factor) for one mole of a Van der Waals gas at 0 and 100 atmosphere pressure is found to be 0.5. Assuming that the volume of gas molecule is negligible, calculate the Van der Waals constant ‘a’.

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

Acetic anhydride is a product of acetic acid, as a result of the following reaction:

NUMS 2020
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

Molecular Formula of Propane is:

Which one of the following is a common mineral of calcium? a

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

NUMS Mock 1
Chemistry
Hydrocarbons

The type of isomerism existing in a compound of molecular formula C2H6O is:

PMC 2020
Chemistry
Fundamental Principles of Organic Chemistry
Elimination Tool:

Sodium reacts with water more vigorously than lithium because it:

NTS 2010
Chemistry
s and p Block Elements
Elimination Tool:

Which of the following is a component of TEAR GAS:

The relation between first and second ionization potentials of a given atom is:

NUMS Mock 4
Chemistry
Chemical Bonding

Sodium Benzoate on reacting with soda lime forms:

NUMS 2015
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

The IUPAC name of the compound having structural formula CH3 — CH(OH) —COON is:

Which of the following compounds is responsible for the depletion of ozone layer?

UHS 2019
Chemistry
Environmental Chemistry
Elimination Tool:

The chemical formula of chromyl chloride gas is?

NTS 2016 SMBBMC
Chemistry
Periodicity in Elements
Elimination Tool:

What is the correct name for this structure?

NUMS Mock 1
Chemistry
Fundamental Principles of Organic Chemistry

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

NTS 2014
Chemistry
Hydrocarbons
Elimination Tool:

Which of the following is TRUE regarding Methyl Alcohol?

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

Slow cooling yields crystals of length?

7) Gypsum supplies to soil

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

UHS 2011
Chemistry
Environmental Chemistry
Elimination Tool:

When electricity is passed through water in the presence of an acid, oxygen and ______ is produced.

NTS 2018
Chemistry
Electrochemistry
Elimination Tool:

Chlorine upon reaction in cold NaOH yields:

NUMS 2014
Chemistry
s and p Block Elements
Elimination Tool:

In Paper industry, sodium sulphite is buffered with

How many balloons of capacity 0.25dm3 at 1atm pressure can be filled from a hydrogen gas cylinder of 5dm3 capacity at 10 atm?

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

Which if the following has the greatest difference between it’s first and second ionization energies?

NUMS 2014
Chemistry
Periodicity in Elements
Elimination Tool:

Acetylene on reacting with ammonium silver nitrate gives.

NUMS 2014
Chemistry
Hydrocarbons
Elimination Tool:

Ionization energy depends upon:

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

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

When does a gas deviate the most from its ideal behavior ?

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

Magnesium reacts with nitrogen to form:

PMC 2020
Chemistry
s and p Block Elements
Elimination Tool:

Which one of the following has the least C — C bond length?

) Acetic acid is used in making

Down the group acid-base behaviour of metallic oxides of group 2 elements changes to:

NUMS Mock 2
Chemistry
s and p Block Elements

Unpolluted rain water has a pH of:

UHS 2013
Chemistry
Environmental Chemistry
Elimination Tool:

For Alkali Metals, decrease in the ionization potential is because of the increasing:

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:

is used in electric light bulbs, in fluorescent tubes, in radio tubes and Geiger counters

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

PMC 2020
Chemistry
Chemical Bonding
Elimination Tool:

) Nylon 6 —6 Is obtained by heating adipic acid with:

Disposable cups are made of a polymer ‘polystyrene’. Polystyrene is:

UHS 2019
Chemistry
Macromolecules
Elimination Tool:

Which of the following compounds is solid at room temperature?

NUMS Mock 2
Chemistry
Alcohols, Phenols and Ethers

When a charged particle is projected perpendicular to a magnetic field:

NUMS Mock 4
Physics
Electrostatics

The oxidation state of carbon in C2O42- is:

NUMS 2019 Reconduct
Chemistry
Electrochemistry
Elimination Tool:

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

NUMS Mock 4
Chemistry
Electrochemistry

While finding the relative atomic mass, which of the following standard is used to compare the atomic mass of chlorine (35.5 amu)

NUMS Mock 1
Chemistry
Stoichiometry

In which of the following cases are the benzene rings isolated?

NUMS 2015
Chemistry
Hydrocarbons
Elimination Tool:

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 unit of rate constant is same as that of rate of reaction in:

NUMS 2019 Reconduct
Chemistry
Reaction Kinetics
Elimination Tool:

Oxidation is defined as:

Which one of the following organic compounds have the least carbon-carbon bond length?

NUMS 2017
Chemistry
Hydrocarbons
Elimination Tool:

The internal energy of an ideal gas depends upon its:

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

Which of the following has the maximum specific heat?