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.

/Which one among the following is good leaving group?

Reduction of ketone using NaBH4 gives?

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

Most of the reactions which give stable products are?

Which of the following formula is more reactive for hydrolysis?

Which pair has trigonal planar geometry?

Which of the following is not a colligative property?

One mole of SO2 contains?

The substituent of chlorine in water disinfection?

Which statement is incorrect about reactivity of alkyl halides?

Which one is best buffer those have?

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

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

Fats and oils are the example of?

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

Total number of valance electrons of nitrogen atom in a ammonium ion 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 cannot by hydrolyze?

Standard hydrogen electrode has an arbitrary fixed potential of?

Isotopes are?

250cm3 of 0.2 molar potassium sulphate solution is mixed with 250cm3 of 0.2 molar KCl solution. The molar concentration of K+ ions is?

All alpha amino acids exist largely in proteins in the form of a dipolar structure is called?

The extent of halogenations of alkanes depnds upon the factors?

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

Here the strongest acid is?

Dehydration of alcohols with conc. H2SO4 at 180°C gives?

The optimum pH for enzyme activity is?

The 2nd order reaction becomes 1st when?

. In Contact process for the manufacture of sulfuric acid, the most important reaction occurs in the catalyst chamber. Which set of the reactants and the catalyst are correct?

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

Ethanoic acid manufacturing through ethanol involves the use of?

Most stable carbonium ion is?

Which of the following can differ in different acids?

Which one is not dicarboxylic acid?

Carbon sub oxide?

Which of the following amino acid is optically inactive?

Total number of hybrid orbitals of all carbon atoms in benzene are?

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

Organic acids (Carboxylic acids) are considered as?

A basic buffer solution can be prepared by mixing?

Which of the following will not form enolate ion?

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

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

Which of the following halogen shows metallic luster?

Which of the following is the example of derived proteins?

Which one of the following radical is called benzyl radical?

Which of the following contains 1 mole of the stated particle?

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

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

Acetic acid (ethanoic acid) can be prepared by ethanol under?

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

Gold and silver are least reactive due to?

Dehydrohalogenation of RX occurs in the presence of?

Oxidation of SO2(g) in the presence of V2O5(s) is an example of?

Which one complex is more stable?

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

Which one is the oxidation state of Mn?

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

Which one metal shows maximum oxidation state?

Which one alcohols is aromatic?

Which is example of pentose?

Which one increases by common ion effect except?

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

The dipolar structure of α-amino acids are called?

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

At equilibrium, the concentration of reactants and products are?

Which of the following reacts with aqueous alkaline iodine?

Which salts make the water hard?

Which of the following statements is not correct?

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

The naturally occurring amino acids are?

The Kw of water at 25°C is given by?

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

Acetyl chloride is soluble in which solvent?

What is the lattice energy of NaCl?

Oleum is prepared by?

Buffer solutions are used in except?

During the formation of an ester from acetic acid, what actually happens?

Which of the following compounds has the highest % age of oxygen by weight?

During the formation of complex compound the Ligands bind with central metal ion/atom by?

Chloromethane is used in?

The electronic configuration of an element is 1s2 2s2 2p3. This represent a/an?

Equal volumes of CO and N2 are taken in identical conditions, The correct relationship between masses of two gases is?

Which one of the following species is not an electrophile?

Which statement is incorrect about lipids

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

When two amino acids are condensed releasing a water molecule, HN – C=O linkage thus formed is called?

The main cause of ozone depletion is?

When 0.5 moles of Al2(SO4)3 are dissolved in water, total number of particles produced?

The compounds which are optically active are called?

The following molecules has linear structure except?

Which of the following has maximum steric hindrance?

Which of the following hydroxide is more soluble in water?

Identify the correct order of increasing energy?

What is the % of nitrogen in urea (NH2CONH2)?

Which compound has only one structural form?

Aspartic acid is an amino acid but its nature is?

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

Which one among the following is not a good leaving group?

The correct set of four quantum numbers for the valence electron of rubidium (Z = 37) is?

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