According to the law of mass action, “The rate of chemical reaction” is proportional to the:

NTS 2010
Chemistry
Chemical Equilibrium
Elimination Tool:

To conduct electricity through Ionic Solids, the ions should be:

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

Ethers are very good:

Organic compounds in which tetravalency of carbon atom is satisfied are called as ____ ?

PMC Practice 1
Chemistry
Hydrocarbons
Elimination Tool:

A gas that reacts with CaO and not with NaHCO3 is:

NTS 2017
Chemistry
Periodicity in Elements
Elimination Tool:

If NaCl produced in the equation:

FeCl3+ NaOH → Fe(OH)3 + NaCl

175.5 g of NaCl was dissolved in water to make a liter of solution, the molarity would be:

NTS 2010
Chemistry
Solution and Colloids
Elimination Tool:

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

NUMS Mock 3
Chemistry
Chemical Bonding

The value of R (the gas constant) is

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

If an electron makes a transition from 4th orbit to inner orbits, then the wavelength for which the radius is maximum, lies in which of the following series?

Which alkyl halide has the lowest reactivity for a particular alkyl group?

NTS 2018
Chemistry
Alkyl Halides and Amines
Elimination Tool:

Number of elements in 6th period is:

Graphite has a structural similarity with:

PMC Practice 2
Chemistry
Macromolecules
Elimination Tool:

Gas is enclosed in a container of 20 cm3 with the moving piston. According to kinetic theory of gases, what will be the effect on freely moving molecules of the gas if temperature is increased from 20 C to 100 C?

NUMS Mock 3
Chemistry
States of Matter – Gases, Liquids and Solids

The color of transition metal complexes is due to transition of electrons between:

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

In the following reaction:

3Br2 +6CO32- + 3H2O → 5Br-1 + BrO3-1 + 6HCO3-1

NTS 2014
Chemistry
Electrochemistry
Elimination Tool:

For preparation of carboxylic acid, alkyl nitrite is required. Alkyl nitrite can be prepared by treating KCN with:

The addition of HBr to an unsymmetrical alkenes follows?

PreMedPK MDCAT Mock 2
Chemistry
Hydrocarbons
Elimination Tool:

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 causes suffocation?

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

Melting point of methyl alcohol is?

Metaboric acid when heated produces:

NTS 2016 DUHS & JSMU
Chemistry
Acids, Bases and Salts
Elimination Tool:

Which of the following compound has the highest boiling point?

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

NUMS Mock 4
Chemistry
Aldehydes and Ketones

Enzymes speed up the reaction upto:

PMC Practice 3
Chemistry
Macromolecules
Elimination Tool:

Many elements have fractional atomic masses. This is because:

NUMS 2020
Chemistry
Atomic Structure
Elimination Tool:

Which of the following gas is more ideal at STP?

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

Which quantum number decides energy of orbitals?

The temperature at which one crystalline form changes to other is called ___ temperature

PMC Sample 3
Chemistry
Solution and Colloids
Elimination Tool:

Which of the following has the maximum number of unpaired d electrons?

NTS 2016 DUHS & JSMU
Chemistry
d and f Block Elements
Elimination Tool:

Which is more soluble in ethanol?

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 amount of solute present in the given amount of solvent is called:

NTS 2017
Chemistry
Solution and Colloids
Elimination Tool:

Which of the following transition metals in its ground state have unpaired electrons in an s-orbital?

NUMS 2015
Chemistry
d and f Block Elements
Elimination Tool:

In Exothermic Reactions heat is _______

PMC Sample 3
Chemistry
Chemical Equilibrium
Elimination Tool:

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

PMC 2020
Chemistry
Fundamental Principles of Organic Chemistry
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:

Which one of the following molecules has the shortest distance of carbon atoms?

NTS 2013
Chemistry
Hydrocarbons
Elimination Tool:

Which of the following is an example of Monocarboxylic acid?

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

The value of S.T.P for 1 mole of any ideal gas is:

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

The oxidation state of carbon in C2O42- is:

NUMS 2019 Reconduct
Chemistry
Electrochemistry
Elimination Tool:

Silicon is found in nature in form of:

NUMS 2014
Chemistry
Chemical Bonding
Elimination Tool:

Rocky crust of earth is mainly composed of?

Which one of the following enthalpy changes is always exothermic?

NUMS Mock 4
Chemistry
Thermochemistry

Which of the following is the correct equation to calculate relative molecular mass of a gas.

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

The structure of cyclohexane is:

PMC Sample 3
Chemistry
Hydrocarbons
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:

Which one of the following reagents is used to distinguish between aldehydes and ketones?

NUMS Mock 1
Chemistry
Aldehydes and Ketones

The same carboxylic acid is obtained either by hydrolysis of a nitrite X or by oxidation of alcohol Y. Which pair could be X and Y? X Y

When the number of moles of reactants and products are equal in reversible reactions which parameter would not affect at equilibrium?

NUMS 2020
Chemistry
Chemical Equilibrium
Elimination Tool:

A reaction with a tendency of occurring in forward and backward direction simultaneously is termed as

PMC Sample 1
Chemistry
Chemical Equilibrium
Elimination Tool:

Which one the following can act as nucleophile?

Nitric oxide has how many valence electrons?

NUMS Mock 1
Chemistry
Atomic Structure

The raindrop acquires a spherical shape and ink spread over blotting paper due to:

NTS 2010
Chemistry
Chemical Bonding
Elimination Tool:

Alkaline KMnO4 converts ethylene into:

NUMS 2014
Chemistry
Hydrocarbons
Elimination Tool:

How many electrons can have the values n=2, l=1, and s=+½ in the configuration 1s2, 2s2, 2p3?

NTS 2015 DUHS and JSMU
Chemistry
Atomic Structure
Elimination Tool:

Vinyl bromide can be prepared from:

PolymerizatIon of ______ produces synthetic rubber.

PMC Sample 1
Chemistry
Hydrocarbons
Elimination Tool:

A six-coordinate complex of formula CrCl3.6H2O has green color. A 0.1 M solution of the complex, when treated with an excess of AgCl, gave 28.7 g of a white precipitate. The formula of the complex would be___________.

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

Adipic acid and Hexamethylene dlamine combine to form?

A crystal system having all sides (a, b and c) unequal and anglesα = β = γ= 90 is:

NUMS Mock 3
Chemistry
States of Matter – Gases, Liquids and Solids

Blue litmus turns red in a solution of PH

NUMS 2014
Chemistry
Acids, Bases and Salts
Elimination Tool:

Identify the pair of rnicronutrients:

Spectrometry is used when reactants and products absorb _____.

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

Chemical formula of MaIonic Acid is?

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:

Which enthalpy change is relevant in the following process

Na(s) -> Na (g) ΔH = +107

UHS 2019
Chemistry
Thermochemistry
Elimination Tool:

_____ is a macromolecule found in blood.

PMC Practice 2
Chemistry
Macromolecules
Elimination Tool:

Sp hybridization is found In which of the following?

In the case of HOCH2CH2CH2COOH, from where is numbering started?

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

Loose electrons present in outer shell meansv

In a Beta elimination reaction, the nucleophile attacks a\an:

NUMS 2015
Chemistry
Alkyl Halides and Amines
Elimination Tool:

The substance which conducts electricity by the movement of ions:

NUMS 2014
Chemistry
Chemical Bonding
Elimination Tool:

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:

Hybridization in BeCl2 Is a

An electron is suited midway between two parallel plates 0.5cm apart. One of the plates is maintained at a potential of 60 volts above the other. The force on the electron is (e=-1.6×10-19)

NUMS Mock 4
Physics
Electrostatics

What happens when one mole of ethane is mixed in the dark at room temperature with six moles of chlorine?

NTS 2017
Chemistry
Hydrocarbons
Elimination Tool:

When was electron discovered?

sp3 hybridization in CH4 gives it ______ geometry.

NTS 2012
Chemistry
Chemical Bonding
Elimination Tool:

Methane gas is also known as

PMC Sample 2
Chemistry
Hydrocarbons
Elimination Tool:

Acetylene with Cl2 gives:

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

PreMedPK MDCAT Mock 2
Chemistry
Aldehydes and Ketones
Elimination Tool:

The increasing number of CFC production for industrial use has been a major contributor to the depletion of ozone molecules in the stratosphere. When CFCs diffuses slowly to the atmosphere in the presence of UV light between 175 nm to 220 nm, the ozone layer decomposes. If 1 mole of CFCl3 (Freon – 110) has been released into the air, how many moles of oxygen is produced from the photodecomposition of ozone?

NUMS 2019 Cancelled
Chemistry
Environmental Chemistry
Elimination Tool:

Either Is dangerous In which of the following states?

In a reversible reaction, catalyst lowers the action energy of the:

NUMS 2020
Chemistry
Reaction Kinetics
Chemical Equilibrium
Elimination Tool:

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

NUMS 2014
Chemistry
Hydrocarbons
Elimination Tool:

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

NUMS Mock 3
Chemistry
Alcohol, Phenols, and Ethers

The densities of liquids are much ________ than gases but ____ to solids.

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

How many chain isomers are shown by C5H12?

PreMedPK MDCAT Mock 4
Chemistry
Hydrocarbons
Elimination Tool:

Which class of compounds cannot show positional isomerism?

PMC Sample 1
Chemistry
Fundamental Principles of Organic Chemistry
Elimination Tool: