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.


Picric acid can be prepared from phenol by?

Two enzymes that are distinct chemically and physically but catalyze same reaction are called?

Isotopes differ in?

Which salts make the water hard?

Which substance does not oxidize easily?

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

. In laboratory the decomposition of hydrogen peroxide is carried out best by using _____ catalyst.

Which of the following hydroxide is more soluble in water?

Combustion analysis is performed for the determination of?

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

In contact process SO3 manufacturing is favour at low temperature but in actual practice the reaction is carried out at 400-600°C the reason is that?

When alcohols react with Na metal, the alkoxide ion thus formed is a strong?

1 gram molecule refers to

In the oxidation of unsymmetrical ketone using strong oxidizing agents like conc. HNO3, which carbon atom is preferentially attacked?

Oxidation of SO2(g) in the presence of NO(g) catalyst is an example of?

Arrhenius equation can be used for evaluating?

Which of the following transition used as a catalyst in Haber’s process?

A smuggler was caught by Airport police and 24 g of diamond was recovered from him. How many atoms of carbon he was carrying?

That solution which possess maximum concentration of solute at given temperature is known as?

The height of the peak in mass spectrum shows?

Which one of the following is alicyclic hydrocarbon?

Which one is the oxidation state of Mn?

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

Total number of d-block elements are?

Major sources of NOx pollutants are?

Elimination bimolecular reactions involve?

Which of the following group of periodic table possess the elements of all the three physical states of matter?

Alanine is an amino acid but its nature is?

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

The extent of halogenations of alkanes depnds upon the factors?

The ability of transition elements to form complexes is due to?

The study of elevation of boiling point is called?

The compounds which are optically active are called?

Which of the following will not form enolate ion?

The temperature at which nitrogen oxidized to NO during HNO3 production is?

Phenol on treatment with dil. HNO3 at low temperature give?

What is the colour of the [Ti(H2O)6]3+?

Which one is the most important use of nitric acid?

Carboxylic acid react with ammonia to form which salt?

Which of the following is not primary pollutant?

Electrochemical series is useful in?

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

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 statements is not correct?

The hydrolysis of Benzenetrizonide will yield three moles of?

Ozone layer of stratosphere requires protection from indiscriminate use of?

Hydrolysis of alkyl nitriles for preparing carboxylic acids requires?

The correct order of equivalent conductance at infinite dilution among LiCl, NaCl and KCl is?

The substituent of chlorine in water disinfection?

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

The main cause of ozone depletion is?

Which of the following is a secondary cell?

The unit of rate constant is the same as that of the rate of reaction in?

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

Which one of the following is the same for SiO2 and CO2?

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

Yellowish brown gray haze refers to?

Milk of magnesia is?

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

What is the structure of water?

Esters are?

Which one of the following is the secondary pollutant of atmosphere?

Tertiary alcohols with acidified dichromate gives?

Molecular ions are produced in mass spectrometer. Which type of molecular ions are more abundant?

Strecker reaction is used for synthesis of?

The work of concentrated H2SO4 in esterification process is as?

What type of reaction occurs between ethane and hydrogen?

Elevation of boiling point can be best studied by?

Standard hydrogen electrode has an arbitrary fixed potential of?

Which of the following statement is true about galvanic cell?

What is the shapes of p orbitals?

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

Magnesium metal is extracted by the electrolysis of its

Oleum is prepared by?

Gold and silver are least reactive due to?

Which one of the following doesn’t react quickly with water at room temperature?

Here the strongest acid is?

When α-bromo acids react with _______ they produced amino acids.

Nitric acid is prepared commercially by?

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

Which one metal shows maximum oxidation state?

Mass in grams of 10 moles of aspartame (C14H18N2O5)?

The oxidation state of carbon-atom in glucose is?

Which statement is incorrect about formation of ester?

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

The technique which is not used to separate isotopes?

The largest number of moles are present in?

Which of the following can differ in different acids?

Which of the following is not a characteristic of SiO2?

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

NHCommunities are _________ collection of organism.

Which one complex is more stable?

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

The dipolar structure of α-amino acids are called?

Tertiary alkyl halide give?

Total heat content of a system is called?

Cellulose has structure like?

Which of the following fertilizer provides to soil 75% neutrients?

Colligative property is not represented by?

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

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