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.


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?

The cell in which electrical energy is converted into chemical energy is?

Which of the following reacts with aqueous alkaline iodine?

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

The following molecules has linear structure except?

Esters are?

Which one of the following is not affect of acid rain?

Carboxylic acid react with ammonia to form which salt?

Which of the following statement is correct?

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

Colligative properties can be used for calculating?

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?

The stoichiometric calculations for a chemical reaction results in?

Alkane nitrilescan be prepared by treating alkyl halide with?

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

Which one can be used as test for phenol?

A basic buffer solution can be prepared by mixing?

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

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

Which of the following formula is more reactive for hydrolysis?

Gram atoms of hydrogen in 5.5g H2?

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

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

Standard hydrogen electrode has an arbitrary fixed potential of?

Which of the following element is used in earth quick prediction?

Which compound is most reactive?

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

Oleum is prepared by?

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

Baeyer’s reagent is?

Chloromethane is used in?

Which of the following is correct about SN2 reactions?

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

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

Which substance does not oxidize easily?

Which one complex is more stable?

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

The impacts of dumping solid wastes in landfills?

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

Most of the reactions which give stable products are?

The solubility of Fe(OH)3 is x molar per dm3. Its Ksp would be?

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?

Fats and oils are the example of?

1 gram molecule refers to

1 gram formula refers to?

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

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

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

Saturated triglycerides of fatty acids?

Reduction of an aldehyde using NaBH4 gives?

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

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

Ethanoic acid can be prepared by hydrolysis of?

Isotopes differ in?

What is the lattice energy of NaCl?

Isotopes are?

The quality of raw water is improved by?

All noble gases are?

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

Iron can be prevented from rusting by?

Which of the following is not a characteristic of SiO2?

What type of reaction occurs between ethane and hydrogen?

Enzyme inactivation can be done by?

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

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

Most stable carbonium ion is?

The Kw of water at 25°C is given by?

Which of the following is not primary pollutant?

The preparation of vegetable ghee involves?

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

Thioalcohol is prepared when alkyl halide is reacted with?

What is the pH of ideal buffer?

The contact process was first developed by?

A nanopeptide contains ________ peptide linkages.

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

Hydrolysis of amides gives the corresponding?

The exothermic process is?

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

Which one is mono haloalkane?

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

What is the example of zwitter ions?

For producing a carboxylic acid derivative. The addition of nucleophile to carboxyl group is always followed by displacement of?

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

Which of the following can be used for alcohol denaturing?

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

Identify the correct order of increasing energy?

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

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?

The dipolar structure of α-amino acids are called?

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

Arrhenius equation can be used for evaluating?

In a double bond connecting 2 atoms there is a sharing of?

The production of acid amide involves the reaction of ethanoic acid with?

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

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

The naturally occurring amino acids are?

Which of the following is the example of proteins?

What is the Colour of K2Cr2O7 ?

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

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

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