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:

Name the main product formed as a result of the following reaction

H3C – (CH2)5 – CH3 ————> Product

n-heptane

Conditions: 480 – 550 C, 150 – 399 psi V2O5

NTS 2019
Chemistry
Hydrocarbons
Elimination Tool:

For a reaction given below

C(s) + O2 (g) -> CO2 (g) + 394 kJ / mol

The enthalpy of reaction is

NTS 2016 SMBBMC
Chemistry
Thermochemistry
Elimination Tool:

Which type of alkyl halides gives SN2 mechanism?

NUMS 2019 Reconduct
Chemistry
Alkyl Halides and Amines
Elimination Tool:

With which of the following alcohols do not react to form alkyl halides?

“Zymase”- a group of 14 enzymes, used in the fermentation of starch, is present in:

NTS 2010
Chemistry
Chemistry of Life
Elimination Tool:

Thermochemistry is very important to learn about

PMC Sample 1
Chemistry
Thermochemistry
Elimination Tool:

Methane gas is also known as

PMC Sample 2
Chemistry
Hydrocarbons
Elimination Tool:

Which one of the following is not an isotope of hydrogen:

NUMS 2014
Chemistry
Atomic Structure
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:

Gas which has percentage equal to 78% In air Is the

Which of the following is the correct order of increasing boiling point?

NUMS Mock 1
Chemistry
Alcohol, Phenols, and Ethers

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

PMC Sample 3
Chemistry
Solution and Colloids
Elimination Tool:

For a gaseous phase reaction, when number of moles of reactants and products are equal:

PMC 2020
Chemistry
Chemical Equilibrium
Elimination Tool:

Fluorine Is reactive due to its:

The decreasing order of second ionization energy of K, Ca, Ba is:

NUMS Mock 1
Chemistry
Chemical Bonding

In electrochemical series, elements are arranged in order of their standard electrode potentials, the correct decreasing reactivity order for metals is:

NTS 2018
Chemistry
Electrochemistry
Elimination Tool:

Zwitter ion is formed when proton goes from:

NTS 2018
Chemistry
Alkyl Halides and Amines
Elimination Tool:

The reduction of nitrile produced a compound of formula C3H7NH2. Which one of the following compounds would be produced if the same nitrile was hydrolyzed by heating with dilute hydrochloric acid?

NUMS 2016
Chemistry
Alkyl Halides and Amines
Elimination Tool:

If concentration of OH- Ions Is 0.1 molar. What Is the pH of the solution?

As the number of solute particles increases, the freezing point of the solution:

UHS 2012
Chemistry
Solution and Colloids
Elimination Tool:

For an equilibrium change involving gaseous phase, the forward reaction is first order while the reverse reaction is second order. The unit of Kp for the forward equilibrium is:

NTS 2019
Chemistry
Chemical Equilibrium
Elimination Tool:

Alkaline KMnO4 converts ethylene into:

NUMS 2014
Chemistry
Hydrocarbons
Elimination Tool:

H2 and O2 are diffusing under the same condition how much H2 gas will diffuse?

NUMS Mock 4
Chemistry
States of Matter – Gases, Liquids and Solids

X-ray work in 20th century shows that diameter of the atoms are of the order?

Chemistry
Introduction to Fundamental Concepts of Chemistry
Elimination Tool:

The rate of diffusion of hydrogen gas as compared to that of oxygen gas is:

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

If uncertainty in the position of an electron is zero the uncertainty in its Momentum is?

NTS 2015 DUHS and JSMU
Chemistry
Atomic Structure
Elimination Tool:

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

Maleic Acid and Fumaric Acid are:

NUMS Mock 3
Chemistry
Fundamental Principles of Organic Chemistry

Which of the following has lowest e/m ratio?

PMC 2020
Chemistry
Atomic Structure
Elimination Tool:

1 amu is?

Which one of the following compounds act as a catalyst when alcohols react with carboxylic acids.

UHS 2018
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

The solubility product for BaSO4 , at 18-25°C is:

NTS 2015 DUHS and JSMU
Chemistry
Solution and Colloids
Elimination Tool:

2 moles of octane ( C8H18) burn with 25 moles of oxygen (02) and produced __ moles of carbon dioxide along with 18 moles of water.

PMC Practice 20
Chemistry
Introduction to Fundamental Concepts of Chemistry
Elimination Tool:

Which of the following Is the smallest unit?

In Cannizzaro’s reaction, Benzyl alcohol is obtained from?

PreMedPK MDCAT Mock 4
Chemistry
Alcohols, Phenols and Ethers
Aldehydes and Ketones
Elimination Tool:

The ratio of σ to π bonds in benzene is:

NUMS 2019 Reconduct
Chemistry
Hydrocarbons
Elimination Tool:

The molecule with zero dipole moment is:

NUMS 2015
Chemistry
Chemical Bonding
Elimination Tool:

Which of the following has the maximum specific heat?

ΔH = ΔE + PΔV is the change in enthalpy at constant ________.

NUMS 2018
Chemistry
Thermochemistry
Elimination Tool:

Which of the following substances has giant covalent structure?

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

Odour of formaldehyde Is:

How many orbitals intermix in sp hybridization?

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

NUMS Mock 4
Chemistry
Electrochemistry

Genetic mutations occur in:

NUMS 2016
Chemistry
Chemistry of Life
Elimination Tool:

The number of moles of solute dissolved per liter of solution is called:

NTS 2012
Chemistry
Solution and Colloids
Elimination Tool:

Which of the following is a balanced redox equation?

NUMS 2020
Chemistry
Electrochemistry
Elimination Tool:

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

NUMS 2014
Chemistry
Hydrocarbons
Elimination Tool:

Which of the following reagents will reduce butanoic acid to butanol?

NUMS 2016
Chemistry
Carboxylic Acids and its Derivatives
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:

Hydrolysis of acyl chloride results in the formation of:

PMC 2020
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

The formula of “rock salt” is:

NTS 2012
Chemistry
Environmental Chemistry
Elimination Tool:

The Oxidation state of Alkali metals in any compound is?

PMC Sample 3
Chemistry
Electrochemistry
Elimination Tool:

The rate of reaction is equal to the specific rate constant, when:

Which of the following represent the formula of Ketone?

Law of mass action was derived by:

NUMS 2014
Chemistry
Chemical Equilibrium
Elimination Tool:

To get the carboxylic acid containing C atoms less than C atoms in parent aldehyde we do hydrolysis of:

Which of the following is not the physical property of acetic acid?

NUMS 2017
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

Down’s cell is used to prepare:

NTS 2019
Chemistry
Periodicity in Elements
Elimination Tool:

Molar heat of vaporization is the amount of heat required to convert one mole of:

NUMS 2020
Chemistry
Thermochemistry
Elimination Tool:

An ester is prepared by the reaction of:

NUMS Mock 4
Chemistry
Carboxylic Acids and its Derivatives

Which step should be repeated over and over to get a variety of substituted products?

PreMedPK MDCAT Mock 5
Chemistry
Hydrocarbons
Elimination Tool:

Elevation of the boiling point is a ____ property.

PMC 2021 Tested
Chemistry
Solution and Colloids
Elimination Tool:

IUPAC name of wood spirit is

Which one is NOT a nucleophile?

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

NO2 in atmosphere absorbs moisture to form?

Which of the following is not soluble In alcohol?

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

NUMS Mock 2
Chemistry
Reaction Kinetics

Carboxylic acids can be prepared by action of and carbon dioxide

The correct electronic configuration of Cr is:

PMC Practice 4
Chemistry
d and f Block Elements
Elimination Tool:

The atoms of hemoglobin is heavier than H-atoms

PMC Practice 23
Chemistry
Introduction to Fundamental Concepts of Chemistry
Elimination Tool:

The value K for H2(g) + CO2(g) H2O(g) + CO(g) is 1.80 at 1000 C. If 1.0 mole of each H2 and CO2 are placed in 1 litre flask, the final equilibrium concentration of CO at 1000 C will be:

NTS 2017
Chemistry
Chemical Equilibrium
Elimination Tool:

The measurement of heat absorbed or given out in a chemical reaction is referred to as:

NTS 2011
Chemistry
Thermochemistry
Elimination Tool:

Sodium Benzoate on reacting with soda lime forms:

NUMS Mock 4
Chemistry
Carboxylic Acids and its Derivatives

Ionic, covalent and co-ordinate covalent bonds are simultaneously present in the molecular geometry of:

NTS 2017
Chemistry
Chemical Bonding
Elimination Tool:

Meta-formaldehyde molecule has Oxygen MOMS:

The mechanism of reaction can be understood by

PMC Practice 6
Chemistry
Experimental Techniques in Chemistry
Elimination Tool:

Equal weights of methane and hydrogen are mixed in an empty container at 25°C. The fraction of total pressure exerted by hydrogen is:

NTS 2013
Chemistry
Stoichiometry
Elimination Tool:

The smallest number of molecules are present in?

Chemistry
Introduction to Fundamental Concepts of Chemistry
Elimination Tool:

The compounds having -COOH group are called as_______?

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

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

NUMS Mock 3
Chemistry
Chemical Equilibrium

Definition of Raoult’s law is,

A bottle of cold drink contains 200 ml liquid in which CO2 is 0.1 molar . Suppose carbon dioxide behaves like an ideal gas the volume of dissolved carbon dioxide at STP is?

NTS 2015 DUHS and JSMU
Chemistry
Stoichiometry
Elimination Tool:

78 g of a hydrocarbon occupies 22.414 ml of volume at S.T.P. The empirical formula of the hydrocarbon is CH. The molecular formula of this hydrocarbon is:

NUMS 2014
Chemistry
Fundamental Principles of Organic Chemistry
Stoichiometry
Analytical Chemistry
Elimination Tool:

Which of the following reactions is NOT shown by ketones?

NTS 2018
Chemistry
Aldehydes and Ketones
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?