Rate of effusion of a gas depends upon:

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

An ionic compound is most likely to be formed when:

NUMS 2015
Chemistry
Chemical Bonding
Elimination Tool:

How many significant figures are there in 0.4793?

NTS 2018
Chemistry
Introduction to Fundamental Concepts of Chemistry
Elimination Tool:

106 gram of Na2CO3 per dm3 of the solution of Na2CO3 in water, the concentration of the solution will be:

NTS 2018
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:

Which of the following is true about SN2 reactions:

The oxidation state of “S’ in the (S2O3)-2 is:

PMC 2020
Chemistry
Electrochemistry
Elimination Tool:

Boiling point of C2H5OH is high than phenol because:

Oxidation number of Nitrogen in HNO3, is:

NTS 2011
Chemistry
Electrochemistry
Elimination Tool:

Two half cells of a galvanic cell are connected with a salt bridge, the electrons flow from:

In a vessel, 10 g N2, 10 g H2 and 10g O2 are present. Which one will have least number of atoms?

PMC 2020
Chemistry
Stoichiometry
Elimination Tool:

Which of the following carboxylic acids is used in medicine as a local irritant?

PMC Practice 2
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

What assumptions are made in the Kinetic Theory about an ideal gas?

There are no forces of attraction between molecules
the molecules are in a state of continuous random motion
the size of the molecule is negligible
NTS 2015 SMBBMC
Chemistry
States of Matter – Gases, Liquids and Solids
Elimination Tool:

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

UHS 2017 Reconduct
Chemistry
Environmental Chemistry
Elimination Tool:

In which of the following will water evaporate earlier?

PMC Practice 1
Chemistry
Introduction to Fundamental Concepts of Chemistry
Elimination Tool:

) The velocity of electron in outermost shell Is?

Formula of Epsom salt is:

Which of these in an aqueous solution of equal concentration has the lowest pH?

NUMS 2019 Cancelled
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

Aqueous solutions of Iodine and Sodium hydroxide were mixed in a round bottom flask at 70 C. Following chemical reaction was carried out.

3I2 + 6 NaOH -> NaIO3 + NaI + H2O
This reaction is termed as;

UHS 2019
Chemistry
Solution and Colloids
Elimination Tool:

Which of the following is used to make container for nitric acid?

Transition elements have coloured compounds because:

NTS 2013
Chemistry
Periodicity in Elements
Elimination Tool:

12% W/W alcohol In water solution contains water:

Color of Epsom salt Is

Which one of the following is neutral amino acid:

Quantum number values for ‘2p’ orbitals are:

PMC 2020
Chemistry
Atomic Structure
Elimination Tool:

Sulfur with HI acts as a:

The heat of a reaction can be calculated by using:

NTS 2010
Chemistry
Thermochemistry
Elimination Tool:

Which pair has 1 electron in it’s ‘s’ orbital?

PMC 2020
Chemistry
Atomic Structure
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:

Which of the following is not a nucleophile?

NTS 2010
Chemistry
Alkyl Halides and Amines
Elimination Tool:

What one is the correct geometry of acetal?

PreMedPK MDCAT Mock 3
Aldehydes and Ketones
Elimination Tool:

Sodium Benzoate on reacting with soda lime forms:

NUMS Mock 4
Chemistry
Carboxylic Acids and its Derivatives

Burning of fuel is a

Which type of isomerism depends on the distribution of carbon atoms on each side of the functional group?

PreMedPK MDCAT Mock 1
Chemistry
Hydrocarbons
Elimination Tool:

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

NUMS 2019 Cancelled
Chemistry
Environmental Chemistry
Elimination Tool:

The bond angles in benzene ring are:

PMC Sample 1
Chemistry
Hydrocarbons
Elimination Tool:

Which of the following is the strongest acid?

PMC 2020
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

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

Molecular solids are different from others because they

Boiling point constants help us to determine:

UHS 2012
Chemistry
Solution and Colloids
Elimination Tool:

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:

The biggest source of acid rain is the oxide of

UHS 2015
Chemistry
Environmental Chemistry
Elimination Tool:

The Vander Waal’s constant ‘If of a gas Is four times the:

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

NTS 2013
Chemistry
Atomic Structure
Elimination Tool:

Which of these pollutants is produced by burning of coal and causes acid rain.

UHS 2018
Chemistry
Environmental Chemistry
Elimination Tool:

_____ is a macromolecule found in blood.

PMC Practice 2
Chemistry
Macromolecules
Elimination Tool:

In SN1 reaction “1” stands for?

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

The correct order of decreasing solubility of AgCI In A) Water B) 0.1 M NaCi C) 0.1 BaCl2 D) 0.1M NI-43
is?

Chemical equations do not tell about the ______ because of certain limitations.

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

950 torr corresponds to:

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

Which of the following metals does NOT liberate hydrogen in reaction with acids?

NUMS 2019 Reconduct
Chemistry
Electrochemistry
Elimination Tool:

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

EDTA ion is a ________ ligand.

NTS 2012
Chemistry
d and f Block Elements
Elimination Tool:

At equilibrium, which of the following reactions is not affected by pressure?

NUMS 2016
Chemistry
Chemical Equilibrium
Elimination Tool:

Urea is the most widely used nitrogen fertilizer in Pakistan. Its composition is:

UHS 2015
Chemistry
Environmental Chemistry
Elimination Tool:

Conversion of Electrical energy into chemical energy is

PMC Sample 2
Chemistry
Electrochemistry
Elimination Tool:

Which of the following statements is correct?

NTS 2017
Chemistry
Acids, Bases and Salts
Elimination Tool:

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

NUMS 2016
Chemistry
Chemical Bonding
Elimination Tool:

When Gypsum is heated to about 100° C, it losses some water of crystallization and becomes:

NTS 2011
Chemistry
States of Matter – Gases, Liquids and Solids
s and p Block Elements
Elimination Tool:

Reduction of benzene is presence of Ni gives:

NUMS 2019 Cancelled
Chemistry
Hydrocarbons
Elimination Tool:

1.8 x 10 -5 is the dissociation constant of:

NTS 2016 SMBBMC
Chemistry
Chemical Equilibrium
Elimination Tool:

Which of the following bond has highest bond energy value?

PMC Sample 1
Chemistry
Alkyl Halides and Amines
Elimination Tool:

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

PMC Practice 4
Chemistry
Experimental Techniques in Chemistry
Elimination Tool:

Oxidation is defined as:

Aerobic decomposition of organic matter i.e. glucose by bacteria in water sediments produces

UHS 2013
Chemistry
Environmental Chemistry
Elimination Tool:

Water and mercury can be separated by:

Treatment of water which is very effective in killing of pathogens is:

Value of heat capacity of water is

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

PreMedPK MDCAT Mock 2
Chemistry
Hydrocarbons
Elimination Tool:

IUPAC name of propionaldehyde is:

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:

The Unit cell with crystallographic dimensions a = b ≠c ,α = β = γ = 90 degrees is:

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

Glass is a/an:

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

According to Charles Law, when temperature is reduced to half the volume will be

Which of the following is an assumption of the kinetic model of an ideal gas?

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

Sigma bond is formed by:

NTS 2010
Chemistry
Chemical Bonding
Elimination Tool:

At Equilibrium, which of the following reactions is not affected by pressure?

NUMS Mock 3
Chemistry
Chemical Equilibrium

Which of the following is not a part of the human diet?

The mass number of an atom is:

PMC 2021 Tested
Chemistry
Fundamental Principles of Organic Chemistry
Introduction to Fundamental Concepts of Chemistry
Elimination Tool:

Which of the following statements best describes how a catalyst works

NUMS 2018
Chemistry
Reaction Kinetics
Elimination Tool:

Which type of movement is shown by the atoms of the solid?

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

Number of molecules in 1 dm3 of water will be almost

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

If 18.0 g of glucose is dissolved in 1 kg of water, boiling point of this solution should be:

UHS 2013
Chemistry
Solution and Colloids
Elimination Tool:

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

PreMedPK MDCAT Mock 2
Chemistry
Aldehydes and Ketones
Elimination Tool:

Fatty Acids are:

A certain chemical reaction follows the
following rate law:

Rate =K [A] [B]2 The order of reaction is:

NTS 2011
Chemistry
Reaction Kinetics
Elimination Tool:

Which of the following has six isotopes?

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

Order of reactivity of halogens towards alkanes is:

NUMS 2019 Reconduct
Chemistry
Alkyl Halides and Amines
Elimination Tool:

If a person is injected by shot of a gun and all the bullets are not removed from his body, it may cause poisoning by:

NUMS 2017
Chemistry
d and f Block Elements
Elimination Tool:

The number of isomers of C3H7-Cl are _______

NUMS 2017
Chemistry
Fundamental Principles of Organic Chemistry
Elimination Tool:

Why transition metals have strong metallic bonding?

PMC Sample 1
Chemistry
Periodicity in Elements
Elimination Tool:

Which group of elements shows greatest electrical conductivity?