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.

Acetyl chloride is soluble in which solvent?

Which substance does not oxidize easily?

He normal amount of overhead ozone is?

According to Hess’s Law, the enthalpy change for a reaction?

The relative lowering of vapor pressure is equal to?

A nanopeptide contains ________ peptide linkages.

Zinc does not show variable valency, because?

Tertiary alcohols with acidified dichromate gives?

Ozone layer of stratosphere requires protection from indiscriminate use of?

The manufacturing of nitrogenous fertilizer’s from ammonia is the result of?

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

One mole of a hydrocarbon X reacts completely with one mole of hydrogen gas in the presence of a heated catalyst. What could be the formula of X?

Isotopes differ in?

What is the structure of water?

Reduction of ketone using NaBH4 gives?

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

Colligative property is not represented by?

The optimum pH for enzyme activity is?

NHCommunities are _________ collection of organism.

The impacts of dumping solid wastes in landfills?

Gram atoms of hydrogen in 5.5g H2?

Which of the following has highest ionization energy value?

One mole of SO2 contains?

Haloform test is given by?

The hydrolysis of Benzenetrizonide will yield three moles of?

Colligative properties can be used for calculating?

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

Which one of the following is not a pollutant?

What is the Colour of K2Cr2O7 ?

Polyester resins are used in?

For which one of the following pairs of compounds can the members be distinguished by means of Tollen’s tests.

What is the pH of ideal buffer?

Which one can be used as test for phenol?

Aspartic acid is an amino acid but its nature is?

Which one of the following has the maximum number of sp2 carbon atoms?

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

Which of the following reacts with aqueous alkaline iodine?

Which of the following statement is correct?

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

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

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

A solution has 92g ethanol, 96g methanol and 90g water. Mole fraction of water in the solution is?

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

Arrhenius equation can be used for evaluating?

Carbohydrate containing aldehyde is called?

The amino group in amino acids can be attached by to any carbon other than?

Alanine is an amino acid but its nature is?

Total number of d-block elements are?

The Kw of water at 25°C is given by?

When we mix SO3 with conc. H2SO4 in contact process, the product obtained is?

A basic buffer solution can be prepared by mixing?

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

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

SN1 reactions are favoured in which solvent?

An element having high ionization energy and tends to be chemically in-active would most likely to be a/an?

Carbon sub oxide?

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

If 75% of any given amount of radioactive element disintegrates in 60 min. The half life of radioactive element is.

Which of the following is not a colligative property?

Which of the following is the example of derived proteins?

A solution of glucose is 10%. The volume in which 1g mole of it will be dissolved is

The best and the most recommended technology for solid waste management is?

The following molecules has linear structure except?

Hydrolysis of amides gives the corresponding?

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 functional group participates in disulphide bond formation in protein?

Picric acid can be prepared from phenol by?

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

The 2nd order reaction becomes 1st when?

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

All noble gases are?

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

The unit of rate constant of second order reaction is?

Which one of the following radical is called benzyl radical?

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

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

The extent of halogenations of alkanes depnds upon the factors?

Cellulose has structure like?

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

Neo-pentyl alcohol is a type of alcohol?

Number of shared pair of electrons between C and O in a molecule of CO is?

Ethanoic acid can be prepared by hydrolysis of?

10g NaOH is dissolved in 1000g water. The molality of NaOH is?

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

Which of the following can be reagent to produce acetyl chloride from ethanoic acid?

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

1 gram formula refers to?

When the solvent is containing non volatile solute particles, then?

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

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

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?

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

Which of the following formula is more reactive for hydrolysis?

The compounds which are optically active are called?

For d2sp3 hybridization, the expected shape is?

Magnesium metal is extracted by the electrolysis of its

The acidic character of amino acids is due to?

If the energy of the activated complex lies close to energy of reactants, it means that reaction is?

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

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

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