Chemistry Mcqs Online With Answers

Chemistry is the branch of science concerned with the substances of which matter is composed, the investigation of their properties and reactions, and the use of such reactions to form new substances.Chemistry is the scientific discipline involved with compounds composed of atoms, i.e. elements, and molecules, i.e. combinations of atoms, their composition, structure, properties, behavior and the changes they undergo during a reaction with other compounds. Chemistry addresses topics such as how atoms and molecules interact via chemical bonds to form new chemical compounds.In the scope of its subject, chemistry occupies an intermediate position between physics and biology. It is sometimes called the central science because it provides a foundation for understanding both basic and applied scientific disciplines at a fundamental level.Chemistry was preceded by its protoscience, alchemy, which is an intuitive but non-scientific approach to understanding the constituents of matter and their interactions. Just follow the Mcqs online quiz being dispatched over here with respect to your preparation for entry admission test NTS PPSC OTS PTS and missllenous job exams simultaneously.

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Chemistry Mcqs Online With Answers for NTS PPSC Entry Test Classes

Chemistry

Chemistry Mcqs with Answers solved online.


What is the Colour of K2Cr2O7 ?

Chloromethane is used in?

Isotopes differ in?

Which one of the following substance is not used as disinfectant or chlorinating agent?

Ethanoic acid manufacturing through ethanol involves the use of?

Hydrolysis of CH3CH2CN will synthesize?

When HCl gas is passed through saturated solution of rock salt, the solubility of NaCl?

Which of the following reacts with aqueous alkaline iodine?

Which of the following ketones will produce propanoic acid only after oxidation by acidified potassium dichromate?

Which of the following has maximum steric hindrance?

The following molecules has linear structure except?

Which of the following amino acid is optically inactive?

. In a given system, water and ice are in equilibrium, if the pressure is applied to the above system then?

Which statement is incorrect about reactivity of alkyl halides?

The half life period of zero order reaction is equal to?

Some O2 is present in water. The water will be considered as “polluted water” when concentration of O2 in it will be?

Which one is the oxidation state of Mn?

When alkyl halide reacts with sodium metal in the presence of ether. Which product is formed?

Which of the following property of IIA group decreases down to the group?

The Kw of water at 25°C is given by?

The largest number of moles are present in?

Which of the following is the example of proteins?

What is the shapes of p orbitals?

Dry ice (Solid CO2) has geometry?

Yellowish brown gray haze refers to?

Isotopes are?

Maximum ammonia is used for the?

Neo-pentyl alcohol is a type of alcohol?

The substances which don’t dissolve in reasonable amount in particular solvent are?

Which is example of pentose?

What is the pH of ideal buffer?

In a mass spectrometer, increasing the magnetic field strength with constant electric field result in?

When the concentration of reactant in the reaction is increased by 8 times, the rate increased only by 2 times. what is the order of reaction?

Which of the following is alkyl halide?

Why bleaching powder is always preserved in sealed plastic bags?

Which of the following can be used for the oxidative preparation of aldehydes from alcohols?

β- elimination reactions are due to?

Which one alcohols is aromatic?

In esterification reaction, which one of the following bonds of alcohol undergo cleavage?

Which of the following step is not involved in NH4NO3 manufacturing?

Which of the following compounds has non directional bond?

Lack of essential amino acids in diet leads to the disease.

Excess alcohol at low temperature in presence of conc. H2SO4 produce?

Coinage metals have least reactivity because they have?

The reagent which attacks a region where the electron density is high is called?

Which of the following 0.1 m solution will have the lowest freezing point?

During combustion analysis, which one is used for absorbing carbon dioxide?

Decomposition of H2O is?

End to end overlapping of orbitals give rise to the formation of?

The study of elevation of boiling point is called?

The naturally occurring amino acids are?

Benzene is heated in air with V2O5 at 450°C it undergoes?

Organic acids (Carboxylic acids) are considered as?

If ionic product is equal to Ksp then the solution is?

Carboxylic acid react with ammonia to form which salt?

Which one is mono isotopic element?

The contact process was first developed by?

Why do farmers and gardeners often treat soil with ammonia sulphate?

Which ion will have maximum heat of hydration?

Which of the following is the example of derived proteins?

Which of the following statement is correct?

Carboxylic acids react with active metals (Na, K, Ca and Mg) to form their salt and?

The alkyl halide molecule on which the nucleophilic attacks is called?

Tetraethyl lead is prepared by reacting ethyl bromide with?

Which of the following halogen shows metallic luster?

Which one metal shows maximum oxidation state?

Which one is chemical method for the determination of rate of reaction?

Replacement of hydrogen of benzene by alkyl group in the presence of alkyl halide and aluminum chloride is known as?

Primary alcohols upon oxidation with acidified dichromate gives?

Fats and oils are the example of?

Which one is the name of given compound by IUAC system of nomenclature?

Which type of reactions are more abundant in organic reaction?

Nitric acid is prepared commercially by?

Reduction of an aldehyde using NaBH4 gives?

Which ester is used as orange flavor?

The main cause of ozone depletion is?

Which of the following statements is not correct?

Non-stoichiometric compounds of transition elements are called?

A compound contains 50% sulphur and 50% oxygen by mass. The empirical formula of the compound is?

Inorganic compound of nitrogen are not commonly found as minerals because?

NHCommunities are _________ collection of organism.

The organic compounds containing both the amino and the carboxyl group are called?

The process in which the orbitals of different energies and shape mix with each other to give equivalent hybrid orbitals is called?

The ability of elements to act as reducing agent _________ down to electrochemical series.

Which of the following not has equal number of atoms as that in 6g Molybdenum (Ar : 96)

If ethanoic acid is to be prepared by hydrolysis of alkyl nitriles, which of the following can be the reagent to be hydrolyzed?

If an electrophile is the attacking reagent which one is most reactive?

The quality of raw water is improved by?

Most of the reactions which give stable products are?

Which of the following statements regarding a catalyst is not true?

Ozone layer of stratosphere requires protection from indiscriminate use of?

Which one of the following doesn’t react with water even at red hot temperature?

Which of the following test is used to identify amino acids?

Which pair can be used as a reactant for the preparation of acetyl chloride?

Which of the following cell can convert chemical energy directly into electrical energy?

Gram atoms of hydrogen in 5.5g H2?

Which pair of electrons of elements will have the same chemical properties?

The substituent of chlorine in water disinfection?

What will be the pH of 1.0 mol dm-3 of NH4OH, which is 1% dissociated?

Which one is the most important use of nitric acid?

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