Example of nucleophile is:

NUMS 2017
Chemistry
Fundamental Principles of Organic Chemistry
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:

The molecular formula expresses?

NTS 2015 SMBBMC
Chemistry
Stoichiometry
Elimination Tool:

Copper is a typical transition metal. Its atomic number is 29. In which oxidation state does it have a partially filled orbital in d-subshell?

NUMS Mock 2
Chemistry
d and f Block Elements

A single Chloride free radical can destroy ozone molecules up to:

NUMS Mock 1
Chemistry
Enviormental Chemistry

Which of the following is the safest way to dry crystals during crystallization?

Which of the following is the correct IUPAC name?

NTS 2016 SMBBMC
Chemistry
Fundamental Principles of Organic Chemistry
Elimination Tool:

The rate of a chemical reaction is directly proportional to the product of active masses of the reactants, it is referred to as:

NTS 2018
Chemistry
Reaction Kinetics
Elimination Tool:

Water and mercury can be separated by:

Formula mass is considered for compounds instead of their molecular mass.

PMC Practice 21
Chemistry
Introduction to Fundamental Concepts of Chemistry
Elimination Tool:

All the gasses at 212.44 cm3 have

Alkenes undergo:

NUMS Mock 2
Chemistry
Hydrocarbons

Which of the following is a major mineral of Lithium?

When CH2 = CH2 reacts with a halogen acid, the product formed is:

Comparative rates of diffusion of He and SO2 will be _______.

NTS 2012
Chemistry
States of Matter – Gases, Liquids and Solids
Elimination Tool:

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

Number of molecules in 1 dm3 of water will be almost

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

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

PMC 2020
Chemistry
Fundamental Principles of Organic Chemistry
Elimination Tool:

Which of the following molecule is expressed in empirical formula:

Formula of Thionyl chloride is

Example of a nucleophile is:

NUMS Mock 1
Chemistry
Fundamental Principles of Organic Chemistry

Metals belonging to the same group in the periodic table are

NUMS 2014
Chemistry
s and p Block Elements
Elimination Tool:

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

PreMedPK MDCAT Mock 5
Chemistry
Hydrocarbons
Elimination Tool:

Which functional group is not a double bond?

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

Example of a nucleophile is:

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

Which of the following is unstable?

IUPAC name of wood spirit is

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:

The unit of viscosity is:

NTS 2012
Chemistry
States of Matter – Gases, Liquids and Solids
Elimination Tool:

Propyl Acetate and valeric acid are which type of isomers

NUMS 2018
Chemistry
Fundamental Principles of Organic Chemistry
Elimination Tool:

Ketones undergo reaction with which compound in the presence of acid to form oximes

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

UHS 2017 Reconduct
Chemistry
Environmental Chemistry
Elimination Tool:

The boiling point of water is higher than other hydrides because water molecules can form:

NTS 2018
Chemistry
Chemical Bonding
Elimination Tool:

The rate of a reaction in general can be increased by all the following factors except:

NUMS Mock 2
Chemistry
Reaction Kinetics

Why is it necessary to distill aldehyde formed from oxidation of primary alcohol through acidified potassium dichromate (VI) solution or acidified sodium dichromate (VI) solution?

PreMedPK MDCAT Mock 5
Chemistry
Alcohols, Phenols and Ethers
Aldehydes and Ketones
Elimination Tool:

Group 1A and 11A are known as: ) s block elements d) P block elements

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:

On balancing the following chemical equation: K2CrO4, + HCI –> KCI + 2CrCI3 + Cl2 + H2O The co-efficient with HCI will be?

Why is water added after the reduction process of aldehyde and ketone with LiAlH4?

NUMS 2019 Cancelled
Chemistry
Aldehydes and Ketones
Elimination Tool:

Which of the following statements about H2S is false?

NTS 2017
Chemistry
Periodicity in Elements
Elimination Tool:

The rate of a gaseous reaction Is given by K [A] [B]. If the volume of the vessel containing these gases is reduced to 1/4th of the initial volume, the rate of reaction relative to the original rate would be:

NUMS 2016
Chemistry
Reaction Kinetics
Elimination Tool:

During oxidation of unsymmetrical ketones which atom is oxidized?

PreMedPK MDCAT Mock 5
Aldehydes and Ketones
PMC Practice 28
Elimination Tool:

Primary, Secondary Tertiary alcohols can be distinguished by Lucas test in which .. appear

In HF the covalent bond is due to:

NTS 2016 SMBBMC
Chemistry
Chemical Bonding
Elimination Tool:

Which one is not true for H2SO4?

NTS 2012
Chemistry
Macromolecules
Elimination Tool:

The temperature zones In rotary kilns are:

Anything under test or observation in laboratory is called

PMC Sample 2
Chemistry
Thermochemistry
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:

The colour of methyl orange in base is?

NTS 2015 SMBBMC
Chemistry
Acids, Bases and Salts
Elimination Tool:

Vapor pressure is measured by calculating the difference in liquid pressure and?

PMC Practice 2
Chemistry
States of Matter – Gases, Liquids and Solids
Elimination Tool:

Which of the following is not a derivative of benzene?

PMC Practice 1
Chemistry
Alcohols, Phenols and Ethers
Elimination Tool:

Solid NaCl is a bad conductor of electricity because:

NUMS 2016
Chemistry
States of Matter – Gases, Liquids and Solids
Elimination Tool:

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

NUMS 2017
Chemistry
Chemical Equilibrium
Elimination Tool:

Value of heat capacity of water is

Which is most basic in character?

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

Polymerization of ethene produces which of the following polymers?

PMC Practice 3
Chemistry
Macromolecules
Elimination Tool:

The most dense element is:

NTS 2013
Chemistry
s and p Block Elements
Elimination Tool:

RMgX is an organometallic compound, generally known as:

NTS 2012
Chemistry
Alkyl Halides and Amines
Elimination Tool:

Silicon is found in nature in form of:

NUMS 2014
Chemistry
Chemical Bonding
Elimination Tool:

In Paper industry, sodium sulphite is buffered with

Which of the following statements best describes how a catalyst works

NUMS 2018
Chemistry
Reaction Kinetics
Elimination Tool:

How will the equilibrium of the following reaction be affected if additional nitrogen is added?

N2(g) + 3H2(g)⇌ 2NH3(g)

NTS 2015 DUHS and JSMU
Chemistry
Chemical Equilibrium
Elimination Tool:

A child’s balloon has a volume 3.80 dm3, when the temperature is 35°C. If the balloon is put in a refrigerator and cooled to 5°c, the approximate volume of the balloon is (assume pressure inside the balloon is equal to atmospheric pressure):

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

The coal used for domestic purposes is: –

Which of the following is the highest electronegative element?

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

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

Which ion will have a maximum value of the heat of hydration?

PMC Practice 1
Chemistry
Thermochemistry
Elimination Tool:

Maximum ionization potential is of:

NUMS 2014
Chemistry
Periodicity in Elements
Elimination Tool:

In the gaseous state, the distance between the molecules is ___ times _____ than their diameters.

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

Which of the following Alkyl Halide is most reactive?

The shape of SnCl2 is:

NUMS 2015
Chemistry
Chemical Bonding
Elimination Tool:

Transition Elements usually show:

NUMS Mock 2
Chemistry
d and f Block Elements

Densities of alkali metals are low due to:

PMC 2020
Chemistry
s and p Block Elements
Elimination Tool:

The general formula of Methane Dichloride is:

Vapor pressure of a liquid depends upon

Magnesiums keep on burning in:

NUMS 2014
Chemistry
s and p Block Elements
Elimination Tool:

Which one of the following statements is incorrect?

NUMS 2018
Chemistry
Solution and Colloids
Elimination Tool:

Stability of benzene is due to

Which one of the following compounds is an additional polymer?

UHS 2019
Chemistry
Macromolecules
Elimination Tool:

In the electrolysis of molten ZnCl2, how much Zn can be deposited at the cathode by the passage of 0.01 ampere for one hour?

NUMS 2017
Chemistry
Electrochemistry
Elimination Tool:

An atom is composed of electrons, protons, neutrons and ___.

PMC Practice 22
Chemistry
Introduction to Fundamental Concepts of Chemistry
Elimination Tool:

________ is used as a preservative for life specimens.

NTS 2012
Chemistry
Macromolecules
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:

Meta-formaldehyde molecule has Oxygen MOMS:

Identify the common name of the following compound:

CH₃CH₂COCH₂OH

PreMedPK MDCAT Mock 1
Chemistry
Aldehydes and Ketones
Fundamental Principles of Organic Chemistry
Elimination Tool:

Which statement is correct?

PMC Sample 3
Chemistry
Solution and Colloids
Elimination Tool:

Hydrolysis of Nitriles produces:

NUMS 2020
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

During oxidation process, oxidation number of an element:

PMC 2020
Chemistry
Electrochemistry
Elimination Tool:

Mass spectrometer is used to determine which of the following quantity?

Which one of the following is the structure of Teflon?

UHS 2018
Chemistry
Alkyl Halides and Amines
Macromolecules
Elimination Tool:

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

NTS 2014
Chemistry
Thermochemistry
Elimination Tool: