Which of the following is the strongest acid?

PMC 2020
Chemistry
Carboxylic Acids and its Derivatives
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:

Nylon-6,6 is also called:

UHS 2018
Chemistry
Macromolecules
Elimination Tool:

Which of the following oxides is amphoteric in character?

NUMS 2014
Chemistry
Acids, Bases and Salts
Elimination Tool:

Allotropes are of same?

PMC Practice 2
Chemistry
Macromolecules
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:

The following changes to the system at equilibrium have no effect on Kc except:

NUMS 2017
Chemistry
Chemical Equilibrium
Elimination Tool:

Solar energy is stored through solar panels in?

Stronger the oxidizing agent, greater is the:

NUMS 2020
Chemistry
Electrochemistry
Elimination Tool:

According to the general gas equation, density of an ideal gas depends upon:

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

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:

What is common when carboxylic acid is reacted with base or with alcohol?

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

Linear combination of atomic orbitals (LCAO) results in the formation of:

NTS 2010
Chemistry
Chemical Bonding
Elimination Tool:

Which of the following has the highest ionization energy?

NUMS 2019 Cancelled
Chemistry
Periodicity in Elements
Elimination Tool:

Transition Elements usually show:

NUMS 2015
Chemistry
d and f Block Elements
Elimination Tool:

Conversion of Electrical energy into chemical energy is

PMC Sample 2
Chemistry
Electrochemistry
Elimination Tool:

The isomers due to the unequal distribution of carbon atoms on either side of the functional group belonging to the same homologous series are called:

NUMS 2014
Chemistry
Fundamental Principles of Organic Chemistry
Elimination Tool:

NO2 in atmosphere absorbs moisture to form?

Diameter of Hydrogen atom is?

ZnH2 is an example of?

NTS 2015 SMBBMC
Chemistry
Periodicity in Elements
Elimination Tool:

Acetic acid is used in treatment of?

Many elements have fractional atomic masses. This is because:

NUMS 2020
Chemistry
Atomic Structure
Elimination Tool:

Which alkaline earth metal make peroxide?

NUMS 2019 Reconduct
Chemistry
s and p Block Elements
Elimination Tool:

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

NUMS Mock 3
Chemistry
Aldehydes and Ketones

Only two elements are present in:

NTS 2011
Chemistry
s and p Block Elements
Elimination Tool:

Which of the following is used as coagulation for latex in rubber industry

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

NUMS 2016
Chemistry
Macromolecules
Elimination Tool:

Which of the following is locating agent?

NUMS Mock 1
Chemistry
Analytical Chemistry

________ are prepared by passing hydrogen gas over hot alkali metals or alkaline earth metals?

NTS 2015 SMBBMC
Chemistry
s and p Block Elements
Elimination Tool:

For which of the following order of the reaction, rate of reaction is inversely proportional to the concentration reaction?

PMC 2020
Chemistry
Reaction Kinetics
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:

A very small value of ‘Kc’ for a reaction at equilibrium indicates:

NUMS 2018
Chemistry
Chemical Equilibrium
Elimination Tool:

Ethanol, when reacted with PCI5 , gave A, POCl3, and HCI. A reacts with AgNO2 to form B and AgCl. A and B are respectively:

NTS 2014
Chemistry
Alcohols, Phenols and Ethers
Elimination Tool:

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

NTS 2014
Chemistry
Electrochemistry
Elimination Tool:

Lithium and beryllium are unique in such a way that they have higher charge densities which produce strong polarizing effects due to:

NTS 2018
Chemistry
Chemical Bonding
Elimination Tool:

When an element exists in more than one crystalline form, the phenomenon is termed as:

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

All amino acids contain the functional group:

NTS 2017
Chemistry
Alkyl Halides and Amines
Elimination Tool:

Nitriles (RCN), on hydrolysis, in the presence of a mineral acid yield:

UHS 2019
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

What is the chemical reaction mechanism by which cells make polymers from monomers?

PMC 2021 Tested
Chemistry
Macromolecules
Elimination Tool:

The carbonates of alkali metals are soluble in water except:

NUMS Mock 3
Chemistry
s and p Block Elements

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:

Metaboric acid when heated produces:

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

The rate constant of a first-order reaction is 3 x 10-6 per second.

If the initial concentration is 0.10 M, the initial rate of reaction is:

NUMS 2018
Chemistry
Reaction Kinetics
Elimination Tool:

Prussian blue is:

NUMS 2014
Chemistry
d and f Block Elements
Elimination Tool:

The formula of Chile Peter salt is

Formaldehyde is Industrially Prepared from: 

H2 and Cl2 do not react in the dark, but in the presence of light a vigorous reaction is initiated due to the formation of:

NUMS 2016
Chemistry
Hydrocarbons
Elimination Tool:

Which of the following has the highest value of electronegativity?

PMC 2020
Chemistry
s and p Block Elements
Chemical Bonding
Elimination Tool:

Ethylamine can be prepared by the action of bromine and caustic potash on:

NUMS 2017
Chemistry
Alkyl Halides and Amines
Elimination Tool:

Amino acid is usually known by a

Number of molecules in 1 dm3 of water will be almost

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

How many Dewar Structure of Benzene are present?

Slow cooling yields crystals of length?

The compounds having -COOH group are called as_______?

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

Aluminium nitrate is not used for ai

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:

The number of neutrons in H2SO4 are ____.

PMC Practice 26
Chemistry
Introduction to Fundamental Concepts of Chemistry
Elimination Tool:

Hydration energy increases with

Thermochemistry is very important to learn about

PMC Sample 1
Chemistry
Thermochemistry
Elimination Tool:

If energy of the activated complex is close to energy of reactants, it means that the reaction is:

NUMS 2019 Reconduct
Chemistry
Reaction Kinetics
Elimination Tool:

The number of bond(s) between carbon and nitrogen atoms in a Nitrile is:

NTS 2018
Chemistry
Chemical Bonding
Elimination Tool:

The amount of energy released by absorbing an electron in the valence shell is:

NTS 2013
Chemistry
Atomic Structure
Elimination Tool:

Which type of carboxylic acid is produced from the hydrolysis of nitriles?

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

A certain radioactive isotope has a half-life of 50 days. Fraction of the material left behind after 100 days will be:

NUMS Mock 2
Chemistry
Analytical Chemistry

The shielding effect of inner electrons is responsible for:

NUMS Mock 3
Chemistry
Atomic Structure

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

PMC 2020
Chemistry
Fundamental Principles of Organic Chemistry
Elimination Tool:

If the value of Kc is large than the ratio (products)/(reactants), the reaction:

Polyester is used in:

PMC 2021 Tested
Chemistry
Macromolecules
Elimination Tool:

Lattice Energy of ionic compounds are found by

PMC Sample 3
Chemistry
Chemical Bonding
Thermochemistry
Elimination Tool:

Which of the following compounds possesses a single covalent bond between carbon and hydrogen?

PreMedPK MDCAT Mock 5
Chemistry
Hydrocarbons
Elimination Tool:

Phenol is derived from?

Which of the following molecules has no net dipole moment?

NUMS 2014
Chemistry
Chemical Bonding
Elimination Tool:

Most abundant salt of sodium in nature is:

NTS 2017
Chemistry
s and p Block Elements
Elimination Tool:

How would an ammonium group affect the benzene ring for subsequent reactions?

NTS 2017
Chemistry
Alkyl Halides and Amines
Elimination Tool:

Which of the following statements is true of Amorphous solids?

NTS 2011
Chemistry
States of Matter – Gases, Liquids and Solids
Elimination Tool:

Strontium lies between calcium and barium in Group II A in the Periodic Table. Which of the properties could be predicted for strontium?

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

Chloro-fluoro carbons cause

Which type of reaction takes place when a carbonyl compound is treated with a mixture of NaCN and an acid?

NUMS Mock 3
Chemistry
Aldehydes and Ketones

Which of the following has allotropic forms:

Which of the following is a water cleaning halogen?

Li is an element of group?

Grignard reagent when added to dry ice gives:

When an electrophilic reagent attacks on alcohol, ________.

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

22.4 dm3 of volume of each H2 and O2 are sparked to produce water vapours (considered as ideal gas) on completion of reaction. What is the decrease in the volume of the vessel?

NTS 2016 SMBBMC
Chemistry
Stoichiometry
Elimination Tool:

If during crystallization more solute could not be dissolved in the solution, the solution is:

Maleic Acid and Fumaric Acid are:

NUMS 2017
Chemistry
Fundamental Principles of Organic Chemistry
Elimination Tool:

If CO2 level increase from the normal level, what will happen?

ETEA 2017
Chemistry
Environmental Chemistry
Elimination Tool:

Gasoline is a mixture of?

NUMS 2018
Chemistry
Hydrocarbons
Elimination Tool:

X-rays are defined as:

NUMS 2020
Chemistry
Atomic Structure
Elimination Tool:

Which of the following statements is incorrect about amorphous solids?

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

Vapor pressure depends on

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

NUMS Mock 3
Chemistry
d and f Block Elements

In Alkenes the Carbon atoms are connected to each other by a

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:

The reaction of benzene with bromine gives?

If 2-butene is treated with KMnO4 the product formed will be: