Mass spectrometer can be used to find:

What is the cell reaction of

Zn(s) | Zn2+(aq) 1M | Ni2+(aq) 1M | Ni(s)

Zn2+(aq) + 2e- -> Zn(s), Eo = -0.76 V

Ni2+(aq) + 2e- -> Ni(s), Eo = -0.25 V

NUMS 2019 Cancelled
Chemistry
Electrochemistry
Elimination Tool:

The reaction CHCH + H2O + 3(O) shows the formation of ________.

NUMS 2018
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

Which of the following bond has highest bond energy value?

PMC Sample 1
Chemistry
Alkyl Halides and Amines
Elimination Tool:

If we balanced the following reaction , what is the net ionic charge on the right side of the equation?

__H+ +___ MnO4- + ____ Fe2+ →___ Mn2+ + ___ Fe3+ + ___ H2O

NUMS Mock 4
Chemistry
Electrochemistry

Boiling point constants help us to determine:

UHS 2012
Chemistry
Solution and Colloids
Elimination Tool:

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

NUMS 2014
Chemistry
s and p Block Elements
Elimination Tool:

Ketones can be made by oxidation of:

NUMS Mock 2
Chemistry
Aldehydes and Ketones

H2O has a higher boiling point than HF because:

NTS 2015 DUHS and JSMU
Chemistry
Chemical Bonding
Elimination Tool:

1 calorie = ______ Joules.

NTS 2012
Chemistry
Chemistry of Life
Elimination Tool:

The Lattice energy is also called as:

PMC 2020
Chemistry
Chemical Bonding
Elimination Tool:

Glucose(C6H12O6) is the most important nutrient in a cell for generating chemical potential energy, what is the mass percent of carbon in 1.5g of sample?

PMC Practice 24
Chemistry
Introduction to Fundamental Concepts of Chemistry
Elimination Tool:

1 amu is?

During oxidation process, oxidation number of an element:

PMC 2020
Chemistry
Electrochemistry
Elimination Tool:

The rate of filtration can be considerably increased by using

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:

At 25 C, the equivalent conductance at infinite dilution of HCl solution is 425 ohm 1 cm 2 Equiv 1 while its specific conductance is 3.825 ohm 1 cm 1. If the apparent degree of dissociation is 90%, the normality of the solution is:

NUMS 2016
Chemistry
Solution and Colloids
Elimination Tool:

The break down of molecular ions from natural productsgive important information about?

Chemistry
Introduction to Fundamental Concepts of Chemistry
Elimination Tool:

In the addition of sodium bisulfite to carbonyl system, which of the following is a nucleophile?

PreMedPK MDCAT Mock 3
Chemistry
Aldehydes and Ketones
Elimination Tool:

All amino acids contain the functional group:

NTS 2017
Chemistry
Alkyl Halides and Amines
Elimination Tool:

Which of the following substances has giant covalent structure?

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

Which of the following is the correct order of electronegativity (from highest to lowest)?

NTS 2015 SMBBMC
Biology
s and p Block Elements
Chemical Bonding
Elimination Tool:

Covalent character of hydrides decrease ________?

PMC Practice 1
Chemistry
Periodicity in Elements
Elimination Tool:

Down’s cell is used to prepare:

NTS 2019
Chemistry
Periodicity in Elements
Elimination Tool:

The carbonic acid which Is named after butter is:

What happens if we react a carboxylic acid with an acyl chloride?

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

Sodium reacts with water more vigorously than lithium because it:

NTS 2010
Chemistry
s and p Block Elements
Elimination Tool:

What is NOT true about K2Cr2O7?

Formula of Thionyl chloride is

Hydrolysis of Nitriles produces:

NUMS 2020
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

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

The electronic configuration of iron is:

NTS 2011
Chemistry
Atomic Structure
Elimination Tool:

In a zero-order reaction, the rate is independent of:

NTS 2019
Chemistry
Reaction Kinetics
Elimination Tool:

The unit used to express the relative atomic mass is called

PMC Practice 4
Chemistry
Introduction to Fundamental Concepts of Chemistry
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:

Boiling point of benzene is:

Vapor pressure depends on:

Which of the following is the strongest acid?

PMC 2020
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

The solubility product of AgCl is 2.0×10-10 mol-2 dm-6. The maximum concentration of Ag+1 ions in the solution is:

NTS 2019
Chemistry
Chemical Equilibrium
Elimination Tool:

Which type of bonds are broken during cracking?

PMC Practice 1
Chemistry
Hydrocarbons
Elimination Tool:

In alkyl halide, the halide ion has charge on it when attached to C-atom.

“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

The crude petroleum is separated in fraction by:

PMC Practice 4
Chemistry
Industrial Chemistry
Elimination Tool:

The influence of temperature on reaction rate is predicted by:

NUMS Mock 1
Chemistry
Reaction Kinetics

Alcbhols react with aqueous acid to produce alkyl halides in presence of

Oxygen does not react with:

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

Enthalpy of a compound is equal to its

NUMS 2016
Chemistry
Thermochemistry
Elimination Tool:

Which of the following has the highest value of pKa?

NUMS Mock 1
Chemistry
Chemical Equilibrium

The flavour of amyl butyrate is:

PreMedPK MDCAT Mock 5
Chemistry
Aldehydes and Ketones
Elimination Tool:

Which of the following is correct general formula of aliphatic carboxylic acid ?

PMC Sample 3
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

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

NTS 2012
Chemistry
Solution and Colloids
Elimination Tool:

Mole fraction of any compound is the ratio of moles of all components in a:

UHS 2011
Chemistry
Solution and Colloids
Elimination Tool:

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

NUMS Mock 2
Chemistry
Periodicity in Elements

Which noble gas has highest ionization energy?

The product formed by acid catalysed hydration of 2 – phenyl propene is:

NUMS 2018
Chemistry
Alcohols, Phenols and Ethers
Elimination Tool:

The reaction between borohydride

The enthalpy change of the reaction

H2(g) + ½ O2 -> H2O (l)

under standard conditions is:

NUMS Mock 1
Chemistry
Thermochemistry

Which of the following compounds has the empirical formula, (CH2O) and reacts with sodium hydroxide?

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

Hydrolysis means reaction with

PMC Sample 3
Chemistry
Electrochemistry
Elimination Tool:

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

NUMS Mock 2
Chemistry
Atomic Structure

Which of the following has the lowest vapour pressure at 20 degrees Centigrade?

PMC 2020
Chemistry
Fundamental Principles of Organic Chemistry
Elimination Tool:

Genetic mutations occur in:

NUMS 2016
Chemistry
Chemistry of Life
Elimination Tool:

In chemistry the work is generally ___.

PMC Sample 1
Chemistry
Thermochemistry
Elimination Tool:

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

NUMS Mock 2
Chemistry
s and p Block Elements

Which one of the following is an example of covalent solid?

How many types of polymers are there based on their natures?

PMC 2021 Tested
Chemistry
Macromolecules
Elimination Tool:

For, the reaction:

N2 + 3H2 ⇌ 2NH3

The production of NH3 will be favored at:

NTS 2010
Chemistry
Chemical Equilibrium
Elimination Tool:

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

NUMS Mock 4
Chemistry
Chemical Equilibrium

Pick correct pair about the difference between E1 and E2 mechanism of methyl bromide forming an alkene.

NUMS 2019 Cancelled
Chemistry
Alkyl Halides and Amines
Elimination Tool:

If electrons are loosely packed then:

Phenol reacts with CH3COCl to give:

NUMS 2019 Reconduct
Chemistry
Alcohols, Phenols and Ethers
Elimination Tool:

Color of Epsom salt Is

What is the color of the precipitate when Brady’s reagent is used to test a benzaldehyde?

NUMS 2019 Cancelled
Chemistry
Aldehydes and Ketones
Elimination Tool:

Q.83 Alcohol oxidation gives carboxylic acid through

Which of the following is the correct order of electronegativity (from highest to lowest)?

NTS 2015 SMBBMC
Biology
s and p Block Elements
Chemical Bonding
Elimination Tool:

An ionic compound is most likely to be formed when:

NUMS 2015
Chemistry
Chemical Bonding
Elimination Tool:

If products of a reaction act as a catalyst, such process is called:

NTS 2014
Chemistry
Alkyl Halides and Amines
Elimination Tool:

What will be the mass in grams of 12 gram atom of carbon atoms?

RMgX is an organometallic compound, generally known as:

NTS 2012
Chemistry
Alkyl Halides and Amines
Elimination Tool:

– ROR is the nucleophile of

NTS 2011
Chemistry
Aldehydes and Ketones
Elimination Tool:

Carboxylic acids form dimers due to _________.

PMC Practice 3
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

Which one of the following is an acid?

If the distribution co-efficient is small then the solute will:

Li is an element of group?

The ionization energy increases from left to right in a period due to increase in?

PMC Practice 1
Chemistry
Periodicity in Elements
Elimination Tool:

Electronic configuration of K is:

NUMS 2014
Chemistry
Atomic Structure
Elimination Tool:

Which orbitals take part in binding of transition elements

PMC Sample 1
Chemistry
Periodicity in Elements
Elimination Tool:

A solution has pH of 10. What is the value of [OH-]?

An ester is prepared by the reaction of:

NTS 2011
Chemistry
Carboxylic Acids and its Derivatives
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:

Reduction of benzene is presence of Ni gives:

NUMS 2019 Cancelled
Chemistry
Hydrocarbons
Elimination Tool:

Which of the following cannot be used to convert butanoic acid to butanoyl chloride?

NUMS 2016
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

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

NUMS 2019 Cancelled
Chemistry
Aldehydes and Ketones
Elimination Tool: