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.


Most of the reactions which give stable products are?

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

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

The acidic character of amino acids is due to?

The following molecules has linear structure except?

Which of the following statement is correct?

Which can be replace hydrogen from dilute acids?

Which type of reactions are more abundant in organic reaction?

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

Total number of d-block elements are?

Some O2 is present in water. The water will be considered as “polluted water” when concentration of O2 in it will be?

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

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

Which statement is correct about DNA?

Strecker reaction is used for synthesis of?

Which pair of electrons of elements will have the same chemical properties?

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

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

One mole of SO2 contains?

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?

Colligative property is not represented by?

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

Hydrolysis of CH3CH2CN will synthesize?

The quality of raw water is improved by?

Which of the following can be used for the oxidative preparation of aldehydes from alcohols?

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

. 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?

Which of the following halogen shows metallic luster?

Hydrolysis of alkyl nitriles for preparing carboxylic acids requires?

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

Reduction of an aldehyde using NaBH4 gives?

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

In which process alcohol is produced?

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

Smog is essentially caused by presence of?

Which of the following has highest ionization energy value?

Hydrolysis of amides gives the corresponding?

Which of the following formula is more reactive for hydrolysis?

The reactivity of oxides of alkaline earth metals _________ down to the group.

Which of the following is an example of solid in solid solution?

Major sources of NOx pollutants are?

Which of the following statement is true about galvanic cell?

Carboxylic acid react with ammonia to form which salt?

Dry ice (Solid CO2) has geometry?

Alanine is an amino acid but its nature is?

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

Which of the following species has lone pair of electrons on central atom?

1 gram formula refers to?

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

What type of reaction occurs between ethane and hydrogen?

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

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

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

What is the pH of ideal buffer?

Esters are?

Which of the following is the example of derived proteins?

All noble gases are?

Which of the following is alkyl halide?

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

Ethanoic acid can be prepared by hydrolysis of?

Carboxylic acids react with active metals (Na, K, Ca and Mg) to form their salt and?

The unit of rate constant depends on?

Which of the following amino acid is achiral?

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

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

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

At equilibrium, the concentration of reactants and products are?

When alkyl halide reacts with sodium metal in the presence of ether. Which product is formed?

The influence of temperature on reaction rate is predicted by?

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

Gram atoms of hydrogen in 5.5g H2?

1 gram molecule refers to

Formation of cyanohydrin form an aldehyde is an example of?

Which of the following is a secondary cell?

Haloform test is given by?

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

The main advantage of recycling is?

Number of moles present in 0.6 grams of silica is (Atomic mass Si = 28, O = 16)?

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

Which of the following is not primary pollutant?

The Friedel craft reaction will be slowest for?

Baeyer’s reagent is?

Which pair of halogens is present in halothanes?

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

Polyester resins are used in?

Fats and oils are the example of?

Which one alcohols is aromatic?

Which of the following has maximum steric hindrance?

Maximum ammonia is used for the?

Combustion analysis is performed for the determination of?

Neo-pentyl alcohol is a type of alcohol?

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

What is the molecular formula of Benzenetriozonide?

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?

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

The oxidation state of carbon-atom in glucose is?

Which of the following will decolorize aqueous bromine?

Ethanoic acid manufacturing through ethanol involves the use of?

Molal boiling point constant is the ratio of the elevation in the boiling to?

Which one of the following species is not an electrophile?

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