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 Mcqs with Answers solved online.

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

The unit of rate constant depends on?

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

Which type of reactions are more abundant in organic reaction?

Which of the following hydroxide is more soluble in water?

Reduction of an aldehyde using NaBH4 gives?

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

What will be the pH of 1.0 mol dm-3 of H2X, which is only 50% disscociated?

Which of the following is the example of derived proteins?

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

One mole of SO2 contains?

The quality of raw water is improved by?

Baeyer’s reagent is?

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

Which one is mono haloalkane?

Which compound is most reactive?

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

Yellowish brown gray haze refers to?

Change in enthalpy of ∆H a system can be calculated by following relationship?

Elevation of boiling point can be best studied by?

Chloromethane is used in?

Molecule in which the distance between two carbon atom is largest is?

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

Which of the following is correct about SN2 reactions?

The work of concentrated H2SO4 in esterification process is as?

The contact process was first developed by?

Polyester resins are used in?

Neo-pentyl alcohol is a type of alcohol?

Number of H+ ions when 0.1 mole of sulfuric acid is completely ionized in water?

What is the example of zwitter ions?

When an unknown primary alcohol gives yellow precipitates of iodoform, it is most likely to be?

What is the lattice energy of NaCl?

Gold and silver are least reactive due to?

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

Saturated triglycerides of fatty acids?

Which inorganic reagent may be used to distinguish between phenol and methanol?

The acidic character of amino acids is due to?

The exothermic process is?

The extent of halogenations of alkanes depnds upon the factors?

Haloform test is given by?

During an exothermic or endothermic reaction which one of the following formula is used to calculate the amount of heat evolved or absorbed

The Kw of water at 25°C is given by?

Which of the following amino acid is achiral?

Alcohol in which – OH group is attach to carbon which is further attach to only one alkyl group is?

The main cause of ozone depletion is?

Which substance does not oxidize easily?

Which of the following has maximum reactivity in nucleophilic substitution reactions?

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

Which one of the following species is not an electrophile?

In which of the following Equilibiria will Kc and Kp have not the same value?

In a saturated solution of AgCl, the molar concentration of Ag+ and Cl- is 1.0 x 10-5 M each. What is the value of Ksp?

Which one of the following is alicyclic hydrocarbon?

Total number of d-block elements are?

Primary alcohols upon oxidation with acidified dichromate gives?

Acetyl chloride is soluble in which solvent?

A solution of KCl in water contains?

What is the Molailty of pure water?

Which of the following statement is true about galvanic cell?

Thioalcohol is prepared when alkyl halide is reacted with?

The hydrolysis of Benzenetrizonide will yield three moles of?

Which functional group participates in disulphide bond formation in protein?

Which of the following is the example of proteins?

The largest number of moles are present in?

Which one metal shows maximum oxidation state?

Which of the following will not form enolate ion?

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

Number of molecules of sugar in 1dm3 of 1M sugar solution is?

Ea appears as a potential energy hill between _________ for carrying out the reaction.

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

Which one is the oxidation state of Mn?

The thickness of ozone layer is?

How many electrons have to be removed to ionize 1.0 x 10-6 mol of Ne atoms to Ne+ ions in a neon advertising tube?

Which of the following is used as a catalyst for esterification?

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

Zinc does not show variable valency, because?

Tertiary alcohols with acidified dichromate gives?

Which salts make the water hard?

Which substance is mostly used as coagulant to remove the suspended particles of raw water?

What is the shapes of p orbitals?

The height of the peak in mass spectrum shows?

Which of the following is the strongest alkali?

Which of the following is a secondary cell?

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

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

Most of the reactions which give stable products are?

Which is example of pentose?

Carbohydrate containing aldehyde is called?

Acid rain can be due to the absorption of?

Major sources of NOx pollutants are?

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

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

Which of the following statements is not correct?

The influence of temperature on reaction rate is predicted by?

The most suitable temperature of preparing ammonia gas is?

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

All II-A group elements react with halogens to form halides of the type?

The optimum pH for enzyme activity is?

Non-stoichiometric compounds of transition elements are called?

Sulphuric acid is king of chemicals, in its reactions it generally not act as?

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

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