Zwitter ion is formed when proton goes from:

NTS 2018
Chemistry
Alkyl Halides and Amines
Elimination Tool:

Methylated spirit Is % methanol and % ethanol:

Physical and chemical properties of an element depend upon

One Calorie is equal to:

PMC 2020
Chemistry
Thermochemistry
Elimination Tool:

Which derivative of benzene shows maximum reactivity in electrophilic substitution reactions?

UHS 2019
Chemistry
Hydrocarbons
Elimination Tool:

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

NUMS Mock 2
Chemistry
Atomic Structure

Maximum ionization potential is of:

NUMS 2014
Chemistry
Periodicity in Elements
Elimination Tool:

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

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

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

In alkanes all carbon atoms are linked by bond

The bond angles in benzene ring are:

PMC Sample 1
Chemistry
Hydrocarbons
Elimination Tool:

silicon can be obtained from which one of the following compounds

Elimination from 2 – bromobutane results in:

NUMS 2018
Chemistry
Alkyl Halides and Amines
Elimination Tool:

While calculating vapor pressure of a liquid in manometer, the column of mercury facing the vapors of a liquid is _____ due to pressure on surface of liquid in flask.

PMC Practice 1
Chemistry
Experimental Techniques in Chemistry
Elimination Tool:

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

NUMS Mock 4
Chemistry
Hydrocarbons

Which is not a meta directing group:

NUMS 2017
Chemistry
Fundamental Principles of Organic Chemistry
Elimination Tool:

Valence electronic configuration Cu+2 is (29Cu)

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

6th period of periodic table contains elements:

Ionic radius in period from left to right:

NUMS 2014
Chemistry
Periodicity in Elements
Elimination Tool:

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

PMC Sample 3
Chemistry
Solution and Colloids
Elimination Tool:

Nitrogen has oxides:

The substance which conducts electricity by the movement of ions:

NUMS 2014
Chemistry
Chemical Bonding
Elimination Tool:

Which of the following alcohol does not get oxidized when it reacts with K₂Cr₂O₇/H₂SO₄?

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

For a reaction 2A + B ⇌ C + D the active mass of B is kept constant and that of A is tripled. It is observed that the rate of reaction:

NTS 2013
Chemistry
Chemical Equilibrium
Elimination Tool:

Whidi group has coinage metals?

Alkenes undergo:

UHS 2019
Chemistry
Hydrocarbons
Elimination Tool:

In Paper industry, sodium sulphite is buffered with

Half atmospheric pressure is:

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

When a charged particle is projected perpendicular to a magnetic field:

NUMS Mock 4
Physics
Electrostatics

Diameter of an atom is in the range of?

NUMS 2014
Chemistry
Atomic Structure
Elimination Tool:

What is not true about transition metals?

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:

Caster kellners cell evaporated has replaced __________ because the Caster Kellner process evaporates__________?

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

Which of the following statements is NOT true for the first law of thermodynamics?

NTS 2014
Chemistry
Thermochemistry
Elimination Tool:

Which of the following elements has the highest boiling point?

NTS 2014
Chemistry
s and p Block Elements
Elimination Tool:

Which of the following has six isotopes?

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

Densities of alkali metals are low due to:

PMC 2020
Chemistry
s and p Block Elements
Elimination Tool:

When hexane dioic acid is heated with hexamethylene diamine, the compound formed is:

UHS 2011
Chemistry
Industrial Chemistry
Elimination Tool:

If both double and triple bonds are present in the chain, double bond is given the ______

PMC Sample 2
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:

What is the nature of “hydrated tricalcium aluminate” (3 Ca. Al203. 6 H20) in the setting of cement?

CH3CN + NCI > A + B in presence of water in the above reaction A and B are

Chloro-fluoro carbons cause

Which in not woody raw material

F-block elements are called?

PMC Practice 1
Chemistry
d and f Block Elements
Elimination Tool:

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

NUMS 2016
Chemistry
Macromolecules
Elimination Tool:

Aromatic compounds burn with a sooty flame because:

NUMS Mock 3
Chemistry
Fundamental Principles of Organic Chemistry

Hydrolysis of acyl chloride results in the formation of:

PMC 2020
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

Which of the following alcohol does not get oxidized when it reacts with K₂Cr₂O₇/H₂SO₄?

PMC Sample 2
Chemistry
Alcohols, Phenols and Ethers
Elimination Tool:

The compounds having -COOH group are called as_______?

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

Reaction by Grignard reagent are mostly

Which one of the following statements is true?

NUMS 2016
Chemistry
s and p Block Elements
Elimination Tool:

Which of the following shows the Planck’s quantum theory?

NUMS Mock 3
Chemistry
Atomic Structure

X is a salt that decomposes in water.

What is the reason for its decomposition?
e-+ X3+→ X2+ Ecell= 1.91 V

NUMS 2018
Chemistry
Electrochemistry
Elimination Tool:

Water in solution acts as?

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:

Purification of bauxite whose major impurity Is silica (SiO2) is carried out through:

NTS 2010
Chemistry
Macromolecules
Elimination Tool:

If 9.8 g of sulfuric acid is dissolved in excess quantity of water, it will yield ____ moles of hydrogen ion (H+) and _____ moles of sulphate ions (SO42-).

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

For the following exothermic reaction, a decrease in temperature will shift the equilibrium towards: 2NO (g) + O2(g) -> 2NO2 (g)

NTS 2018
Chemistry
Chemical Equilibrium
Elimination Tool:

The formula of washing soda is:

NUMS 2015
Chemistry
Periodicity in Elements
Elimination Tool:

In Lead-Acid battery, product formed at anode during discharging is

The unit of rate of reaction is:

NTS 2011
Chemistry
Reaction Kinetics
Elimination Tool:

If a graph is plotted between pressure on x- axis and volume on y- axis for Boyle’s law verification, the curve obtained is called

PMC Sample 2
Chemistry
Thermochemistry
Elimination Tool:

Treatment of propionaldehyde with Dil. the NaOH solution gives:

NUMS 2016
Chemistry
Aldehydes and Ketones
Elimination Tool:

Which of the following Is the reason that Iron is the most abundant element?

Which of the following oxides is most acidic oxide?

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

The macronutrients for healthy plant growth are required in per acre.

Which one of the following Is a vulcanizing agent?

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

Which enzyme is used when sugar In molasses is converted to glucose and fructose?

A mole of a substance contains _____ particles.

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

Which of the following has the least electron affinity value?

NUMS 2015
Chemistry
Periodicity in Elements
Elimination Tool:

Dipole moment of H2 is:

IUPAC name of wood spirit 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 reaction CHCH + H2O + 3(O) shows the formation of ________.

NUMS 2018
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

Which of the following does not give iodoform test?

NUMS 2014
Chemistry
Aldehydes and Ketones
Elimination Tool:

Which of the following is not an isomer of other three:

Work done on the system is

PMC Sample 1
Chemistry
Thermochemistry
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:

The process in which electric current is used to carry out a non-spontaneous redox reaction is called:

NTS 2017
Chemistry
Electrochemistry
Elimination Tool:

Stability of benzene is due to

Which of the following is not true about caustic soda? a) It causes painful burns c) It is manufactured by Costner—Kellner process e) Both b and d

Choose the correct IUPAC name for the following complex.

[Cr(NH3)4Cl2]Cl

NTS 2019
Chemistry
d and f Block Elements
Elimination Tool:

The temperature zones In rotary kilns are:

Which is the metal, whose elevated concentration is harmful to fish as it clogs the gills thus causing suffocation?

UHS 2012
Chemistry
Environmental Chemistry
Elimination Tool:

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

NUMS 2017
Chemistry
Environmental Chemistry
Elimination Tool:

Function of ozone Is?

In a reaction:
A+B 2C when equilibrium was attained, the concentration was
[A]=[B]=4 moles/dm3
[C]=6 moles/dm3
the equilibrium constant Kc of this reaction is:

NUMS Mock 4
Chemistry
Chemical Equilibrium

Buffer solutions resist change in their?

PMC Practice 6
Chemistry
Solution and Colloids
Elimination Tool: