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:

Oxidation Number of all the elements in the free state is?

PMC Practice 5
Chemistry
d and f Block Elements
Elimination Tool:

Commercial hydrogen is obtained from:

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

Ethylene is a monomer of polyethylene that is widely used as raw material for manufacturing plastics. It can be polymerized into two different classes: HDPE and LDPE. The following choices are the differences of HDPE and LDPE except:

NUMS 2019 Cancelled
Chemistry
Macromolecules
Elimination Tool:

The spectrum of He is expected to be similar to that of:

NUMS 2014
Chemistry
Atomic Structure
Elimination Tool:

Pressure remaining constant, at which temperature volume of gas will become twice to the volume at 0 C?

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

Hydrocarbons which burn with a smoky flame are called:

NUMS 2015
Chemistry
Hydrocarbons
Elimination Tool:

Ionization energy decreases down the group, from top to bottom, due to:

UHS 2019
Chemistry
Periodicity in Elements
Elimination Tool:

A liquid has mass m and specific heat capacity c. The rate of change in temperature of the liquid is R. What is the rate at which heat is transferred from the liquid.

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

C6H5 Is:

Hydration energy of sodium Ion Is:

Which of the following statements about H2S is false:

NTS 2010
Chemistry
s and p Block Elements
Elimination Tool:

In contact process, to which substance adequate quantities of water is added to convert it to sulphuric acid?

NUMS Mock 1
Chemistry
Chemical Equilibrium

75% of a first order reaction is completed in 36 minutes. What is the half life of the reaction?

NUMS 2017
Chemistry
Reaction Kinetics
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:

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

NUMS 2018
Chemistry
Thermochemistry
Elimination Tool:

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:

NTS 2011
Chemistry
Chemical Equilibrium
Elimination Tool:

atalyst used in the preparation of alkyl halide from alcohol

The classification of monohydric alcohols is due to

PMC Sample 3
Chemistry
Alcohols, Phenols and Ethers
Elimination Tool:

If we move down the electrochemical series:

NUMS 2014
Chemistry
Electrochemistry
Elimination Tool:

Reaction by Grignard reagent are mostly

How many bonds are there in CO?

Which one of the following enthalpy changes is always exothermic?

NUMS Mock 4
Chemistry
Thermochemistry

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:

) If 2-butene is treated with KMn04, the product is:

Fractions of crude petroleum can be obtained by using ___________.

PMC Practice 3
Chemistry
Industrial Chemistry
Elimination Tool:

The molecular formula expresses?

NTS 2015 SMBBMC
Chemistry
Stoichiometry
Elimination Tool:

The Kcunits for the reaction N2(g) + 3H2(g) -> 2NH3(g) are:

NUMS 2019 Reconduct
Chemistry
Chemical Equilibrium
Elimination Tool:

Which of the following fundamental particles have the same mass/kg?

NUMS 2020
Chemistry
Atomic Structure
Elimination Tool:

An ionic compound is most likely to be formed when:

NUMS Mock 1
Chemistry
Chemical Bonding

The atomic number Z of an atom represents the:

NTS 2018
Physics
Atomic Structure
Elimination Tool:

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

NUMS Mock 4
Physics
Electrostatics

Molal freezing point constant of water is:

UHS 2013
Chemistry
Solution and Colloids
Elimination Tool:

(HCHO)nH20 is the chemical formula for?

NTS 2015 SMBBMC
Chemistry
Fundamental Principles of Organic Chemistry
Elimination Tool:

Commercial hydrogen can be obtained by the action of steam on:

NUMS Mock 3
Chemistry
s and p Block Elements

Thermochemistry is very important to learn about

PMC Sample 1
Chemistry
Thermochemistry
Elimination Tool:

Boiling point of hydrides of the 4th period is larger than __________.

PMC Practice 2
Chemistry
Periodicity in Elements
Elimination Tool:

Which of the following has the highest value of electronegativity?

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

The first ionization energy is maximum for:

PMC 2020
Chemistry
Chemical Bonding
Elimination Tool:

An essential condition for the Optical Activity of an organic compound is:

NUMS 2015
Chemistry
Fundamental Principles of Organic Chemistry
Elimination Tool:

Co-ordinate covalent bond Is not formed in which of the following

Bacteria plays an important role in:

PMC 2021 Tested
Chemistry
Environmental Chemistry
Elimination Tool:

The acid rain water has pH:

UHS 2012
Chemistry
Environmental Chemistry
Elimination Tool:

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

Percentage of Chlorine present In bleaching powder Is:

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:

Electronic configuration of K is:

NUMS 2014
Chemistry
Atomic Structure
Elimination Tool:

Proteins are present in

Which one of the following is an acid?

What are the values of orbital quantum number/0 and magnetic quantum number(m) for subshell?

The type of isomerism in which the position of functional group changes is called?

NUMS 2014
Chemistry
Chemical Bonding
Elimination Tool:

Alkoxicies react with alkyl halide to form? a

Which Organic acid is used in pulping of wood for paper?

The formula which shows the simplest whole number ratio for the atoms of different elements in a compound is:

NUMS Mock 1
Chemistry
Stoichiometry

If you need to produce carbon dioxide from 12 grams of carbon, how many grams would you need?

One mole of substance at STP has:

PMC 2021 Tested
Chemistry
Introduction to Fundamental Concepts of Chemistry
Stoichiometry
States of Matter – Gases, Liquids and Solids
Elimination Tool:

A compound X (C4H9Br) undergoes the following reactions:

C4H9Br NaOH(aq)/heat > C4H10O Cr2O7(2-), H+(aq)/ heat> C4H8O.

What is X?

NUMS 2018
Chemistry
Alkyl Halides and Amines
Elimination Tool:

Treatment of ethene with cold sulphuric acid, followed by reaction with boiling water, yields:

UHS 2019
Chemistry
Alcohols, Phenols and Ethers
Elimination Tool:

Which of the following gas is more ideal at STP?

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

Phenylmethyl ketone can be converted into ethyl benzene in one step by using:

PreMedPK MDCAT Mock 2
Chemistry
Aldehydes and Ketones
Elimination Tool:

Photochemical smog is primarily caused by

ETEA 2019
Chemistry
Environmental Chemistry
Elimination Tool:

lanthanide Contraction is phenomenon of block :

Genetic mutations occur in:

NUMS 2016
Chemistry
Chemistry of Life
Elimination Tool:

The best yield of 502 can be obtained by which of the following:

The influence of temperature on reaction rate is predicted by:

NUMS 2019 Reconduct
Chemistry
Reaction Kinetics
Elimination Tool:

Rate = K [N2O5] has _____ of reaction.

NTS 2013
Chemistry
Reaction Kinetics
Elimination Tool:

Boiling point of heptane is:

The formula of “rock salt” is:

NTS 2012
Chemistry
Environmental Chemistry
Elimination Tool:

Metals belonging to the same group in the periodic table are

NUMS 2014
Chemistry
s and p Block Elements
Elimination Tool:

In 3rd series of transition elements, paramagnetic behaviour is maximum for Mn +2 and :

PMC 2020
Chemistry
d and f Block Elements
Elimination Tool:

During a chemical reaction, heat of Formation Is:

Water and mercury can be separated by:

Carboxylic acids form dimers due to _________.

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

Which of the following has less amount of protein a

What is the heat of vaporization of radon?

Phenol Acts as

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:

If pressure and volume of a gas are variable while temperature remains constant, this belongs to

PMC Sample 2
Chemistry
Thermochemistry
Elimination Tool:

Which of the following fertilizers has the maximum percentage of nitrogen in solid state?

NUMS 2016
Chemistry
Macromolecules
Elimination Tool:

is used in electric light bulbs, in fluorescent tubes, in radio tubes and Geiger counters

Which of the following solids is an example of a substance with a macromolecular structure?

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

Methane gas is also known as

PMC Sample 2
Chemistry
Hydrocarbons
Elimination Tool:

The C-H bond distance is the longest in:

NUMS 2015
Chemistry
Hydrocarbons
Elimination Tool:

The rate of reaction:

PMC Sample 2
Chemistry
Reaction Kinetics
Elimination Tool:

Which of the following compounds is formed when sodium burns in excess of air?

NTS 2014
Chemistry
s and p Block Elements
Elimination Tool:

For a sub shell I = 2 and m = -2, -1, 0 , +1, +2, it implies that it has ____ space orientation.

NUMS Mock 4
Chemistry
Atomic Structure

Which of the following is a secondary pollutant?

The method which is used on an industrial scale for production of alcohol from alkene is:

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

By heating 25g of limestone (CaCO3) , the weight of carbon dioxide produced is

NTS 2011
Chemistry
s and p Block Elements
Elimination Tool:

The oxidation number of nitrogen in the HNO3 is _______.

NUMS 2018
Chemistry
Electrochemistry
Elimination Tool:

Ketones and aldehydes are reduced in the presence of catalyst:

Paramagnetism is due to: