Fundamentals Concepts of Organic Chemistry

CH₃-O-CH₃ is example of _ isomerism.

Which one of the following compounds show cis-trans isomerism?

The compound with an atom, which has unshared pair of electrons is called:

In the following, which one is a free radical?

Carbon has the unique ability to form long chains by bonding with other carbon atoms. This property of self-linking in carbon is known as:

An organic compound has the empirical formula C₃H₃O if the molar mass of the compound is 110.15 gmol^-1. The molecular formula of this organic compound is: (A, of C=12, H=1.008 and O=16)

Select the nucleophile from the following examples:

The cis-isomerism is shown by:

Which one of the following pair of compounds is cis and trans isomers of eachother?

In the following structure, which one is an α-carbon atom?

Which one of the following pairs can be cis-trans isomer of to each other?

A sample of an organic compound consisting of carbon, hydrogen and oxygen was subjected to combustion analysis. 0.5439g of this compound gave 1.039g of carbon dioxide and 0.63469g of water vapours. The empirical formula of this compound is:

Compounds having the –CN group are called:

Which one of the following is the best name according to IUPAC system for the compound with the formula shown below?

Cl

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H₃C - CH - CH₂ - CH - CH₃

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CH₂

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CH₂CH₃

The type of structural isomerism which arises due to the differences in nature of carbon chains or carbon skeletons is:

Among the following, which one has an electron withdrawing effect:

A compound has an empirical formula CH₂Cl and molecular formula mass as 99gmol^-1, identify the compound:

In which of the following functional groups, the carbon atom is sp hybridized?

What is the molecular formula of pyridine molecule?

What are vinyl alcohol and acetaldehyde:

The increasing stability order of the following compounds

(1) CH₃CH₂CH₂⁺

(2) (CH₃)₃C⁺

(3) CH₃CH₂CH⁺CH₃ are ?

Homocyclic organic compounds are subdivided into two types namely:

1-Butene and two Butene are showing which type of isomerism?

Which type of isomerism is displayed by compounds having the same structural formula but different positions of atoms on both sides of the carbon bond?

The IUPAC name of the compound (CH₃)₂CH-CH(CH₃)-CH(CH₃)₂ is:

Which one of the followings is the best name according to IUPAC system:

Cl <--- Chloro group

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CH₃ — CH — CH — CH₃ <--- Methyl group (on the right)

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CH₂

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CH₂

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CH₃

The IUPAC name of the given compound CH₃-CH(CH₃)-CH₂-Cl is:

The structural formula of 2,3,4-trimethylpentane is:

The given three hydrocarbons (Benzene, Naphthalene, Anthracene) are:

The cis-isomerism is shown by:

Skeletal formula of an organic compound is given below:

Name of this compound is:

Urea NH₂CONH₂ and ammonium cyanate NH₄CNO are

CH₂=NH belongs to

Ethanol C₂H₅OH is the substance commonly called "alcohol". The density of liquid ethanol is 0.7893 gml-1 at 20°C. If 1.2 mol of ethanol is needed for a particular experiment, what volume of ethanol should be measured out?

The number of moles of Cr₂O₇ needed to oxidize 0.136 equivalent of N₂H₅ according to the reaction is: N₂H⁵⁺ + Cr₂O₇ ^2- N₂Cr³⁺ + H₂O is:

25 gram limestone (CaCO₃) is heated to give 10 gram CaO in a chemical reaction what will be the percentage yield of this reaction CaCO₃-----CaO+CO₂

Considering the equation, S+O₂=SO₂ 32_g of sulphur reacts with 32_g of oxygen to give 64_g of SO₂ the 64g of SO₂ produced is called

Methanol burns according to the following equation 2CH₃OH+3O₂2CO₂+4H₂O If 4.50 moles of methanol are burnt in oxygen than how many moles of water are produced

In the reaction 4NH₃+5O₂4NO+6H₂O. When one mole of ammonia and one mole of Oxygen are made to react to completion then

If 20 g CaCO₃ is a added to 20 gram HCl select the true statement

In reaction A+2BC 4 moles of A and 10 moles of B will produce:

The Avogadro's number of atom or molecule or formula unit of a substance is called its

The number of moles in 48 gram helium are

Equal moles of all gasses at STP have

It STP 0.5 mole of a gas occupy a volume of

1 atomic mass unit = _ kg

The actual may be less than theoretical yield due to which of the following reason

The quantity of a product that is actually produced in the chemical reaction is called

considering the equation, S+O₂SO₂ 32g of Sulphur reacts with 32g of oxygen to give 64g of SO₂ the 64g of SO₂ produced is called

Theoretical yield is always less than the actual yield because

The eficiency of a reaction can be checked by knowing

8 gram of CH₄ on combustion give 18 gram of CO₂ calculate percentage yield

actual yield is less than theoretical yield because

The stoichiometric calculations for a chemical reaction result in

researcher has prepared a sample of 1-bromopropane from 10 gram of 1-propanol after purification he made 12 gram of product which of the following is percent yield

methanol burns according to the following equation 2CH₃OH+3O₂2CO₂+4H₂O.

If 4.50 moles of methanol are burnt in oxygen than how many moles of water are produced

in the reaction 4NH₃+5O₂4NO+6H₂O. When one mole of ammonia and one mole of Oxygen are made to react to completion then:

two moles of H₂S and 11.2 dm³ of SO₂ at STP react according to the following equation SO₂+2H₂S2H₂O+3S What will be the number of moles of Sulphur formed in the reaction?

A gaseous hydrocarbon gives upon combustion 0.72 gram of water in 3.08 gram of CO₂ the empirical formula of the hydrocarbon is

if 20 g CaCO₃ is a added to 20 gram HCl select the true statement.

efficiency of a chemical reaction can be checked by calculating

How many moles of oxygen are needed for the complete combustion of two moles of butane

The reactant which is consumed earlier and gaves least quantity of product is called

when 8 grams of H₂ react with two moles of O₂ how much water will be formed

If 41 gram of H₂SO₄ react with 80 gram of NaOH how much reactant will be left over after the reaction is complete

4 moles of sulphur react with 20 moles of fluorine to form sulphur hexa fluoride the excess reagent is

200dm3 of CO is burnt completely according to the reaction 2CO+O₂2CO₂ What volume of O₂ will be required?

In reaction A+2BC₄ moles of A and 10 moles of B will produce:

In the reaction N₂+3H₂2NH₃ the limiting reagent is

For which one of the following the limiting reagent is applicable

What is the approximate percentage of oxygen in the formula mass of Ca(NO₃)₂?

What is the percentage by mass of carbon in CO₂

Which of the following compound contains the highest percentage by mass of nitrogen?

The Avogadro's number of atom or molecule or formula unit of a substance is called it's

20 gram monoatomic gas occupies 44.8 dm³ at STP what is the atomic mass weight of gas

How many moles of a gas are present in 1200 cm³ at STP?

Which of the following has the highest number of atoms

How many chlorine atoms are in two moles of Cl

How many moles of sodium are present in 0.1 gram of sodium

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

88 gram of carbon dioxide contains

46 gram of sodium metal contains

The number of molecule in 9 gram of ice H₂O is

Choose the correct option recording number of particles associated with one mole of a substance

Amount of oxygen in grams which contain 1.5 ×10²² molecules

16 gram of O₂ contains

32 gram of oxygen contains atoms of

How many number of molecules of water in 36 gram of H₂O

2 grams of H₂ molecule contain _ molecules

The molar mass of K₂SO₄ is 174 gram per mole how many k+ ions are there in its one mole of the salt

One mole of C₂H₅OH contains no of H-atoms

Which of the following pair has same mass

The volume of 10 gram of gas X is 5.6 liter at stp what is the molecular weight of x

Statement: the number of moles in 48 gram helium are

A piece of diamond embedded in a gold ring weighs 6.0 gram how many moles of carbon does it contain

Equal moles of all gases at STP have

It STP 0.5 mole of a case occupy a volume of

Number of moles of NO₂ which contains 24 gram oxygen is

In 18 gram of glucose the number of moles of carbon is

The number of moles of CO₂ which contain 8 gram of oxygen is

The volume occupied by 8 gram of O₂ at STP

The amount of sulphur present in 1.5 mole of H₂SO₄ is

2.5 mole of NH₃ and 2.5 mole of SO₂ at same temperature and pressure have equal

The volume occupied by 1.4 gram into it STP is

11.2 07 dm³ of methane at STP has _ moles of hydrogen atoms

which one of the molar volume of the gas at STP

Volume occupied by 4.4 gram of carbon dioxide at STP is:

Number of moles present in 0.6 gram of silica is (atomic mass =28 ,O=16)

0.5 mole of H₂O is formed when one gram of H₂ react with how many gram of oxygen

All of the following statements are incorrect for 20 mole of water except

The compound which have same molecular and empirical formula

Molecular formula of glucose is

Which of the following is incorrect

On complete combustion 44 gram of a sample of a compound gives 88 gram CO₂ and 36 gram of H₂O the molecular formula of the compound may be

The empirical formula and molecular mass of a compound are CH₂O and 180gram respectively the molecular formula of the compound is

A chemical formula that shows the actual and kinds of a atoms present in one molecule of compound is called

The formula with shows the simplest whole number ratio for the atoms of different elements in compound

The empirical formula for water is

In acid with molecular mass 104 contain 34.6% carbon 3.85% hydrogen and rest is Oxygen the molecular formula of acid is

Which of the following compound have empirical formula but no molecular formula

Absorption of carbon dioxide in KOH solution during compassion analysis is

A compound contains 60% Mg and 40% O the empirical formula of compound is

The empirical formula of chloroform is

Combustion analysis is performed for determining

A compound x contains 50% sulphur and 50% oxygen by mass what is the empirical formula of x

A substance x has found to content 72% carbon 12% hydrogen and 16% oxygen what is the empirical formula of x?

The relative atomic mass of oxygen is 16 amu what is the mass of 2 mole of Oxygen gas?

atomic mass unit is equivalent to _ the mass of carbon isotope C-12

The number of neutrons in an atom is equal to the

in atom has a mass number of 23 and atomic number 11 the number of proton is

1 atomic mass unit=_kg

Atoms of the same element with different masses are called

what is the mass of hydrogen in terms of amu?

Chlorine CL relative atomic mass is 35.5 this half number is due to

This set of Organic Chemistry Multiple Choice Questions & Answers (MCQs) focuses on "Classification of Organic Compounds".

1 mole of sucrose is equal to

How many times sodium is heavier than atom of hydrogen?

Atomic mass, molecular mass, formula mass or ionic mass of substance expressed in gram is called

Empirical formula of glucose is

During combustion, sole products are

Percentage of an element in any compound is determined by following formula

A sample of AlF₃ contains 3.0 X 10²⁴ F^- ions. The number of formula units in this sample is

10 g of carbon burns giving 11.2 litres of CO₂ at STP. After combustion the amount of unburnt carbon is

Element A (atomic weight 12.01) and element B (atomic weight 16) combine to form a new substance X. If two moles of B combine with one mole of A, then the weight of one mole of X is

For the reaction A + 2B C, 5 moles of A and 8 moles of B will produce

actose commonly used as a binder in tablets has a molecular weight 342. What weight of CO₂ would be formed when 1/12 mole of this compound is burnt completely?(C₁₂H₂₂O₁₁ + 12O₂ 12CO₂ + 11H₂O)

5.6 g of carbon monoxide is heated with excess of O₂ to form carbon dioxide. What is the theoretical yield in grams of carbon dioxide (2CO + O₂ 2CO₂)?

The amount of a given product calculated to be obtained in a chemical reaction that goes to completion is

The concentration of C = 85.45% and H = 14.55% is not obeyed by the formula

A compound (60 g) on analysis gave C = 24 g, H = 4 g, O = 32 g. Its empirical formula is

The number of gram atoms of sulphur that represents 0.5 mole of sulphuric acid is

Caffeine (molecular weight = 194) contains 28.9% nitrogen. The number of nitrogen atoms in caffeine molecule is

How many moles of atoms are present in one mole of CH₃COOH molecule?

Which of the following is wrong?

Choose the wrong statement.

he total number of protons in 10 g of calcium carbonate is (NA=6.023x10²³)

Maximum number of molecules will be in

From the complete decomposition of 20g CaCO₃ at STP the volume of CO₂ obtained is

Find the number of atoms present in 0.16 g of methane.

The incorrect statement for 14g of CO is

The maximum number of molecules in present in

One mole of CH₄ contain

The weight of one molecule of a compound C₆₀H₁₂₂ is

A compound possesses 8% sulphur by mas. The least molecular mass is

A beaker contains 9 g of water. The number of hydrogen atoms is

The volume occupied by 1.4 of N₂ at STP is

50 gram of calcium carbonate was completely burnt in air. What is the weight (in grams) of the residue?

I mole of which of these molecules contains highest number of atoms

Which series of organic compounds shares the same empirical formula

The ratio of the volumes between equal masses of O₂, H₂ and CH₄ is

The volume occupied by one gram of oxygen gas

No. of hydrogen atoms in 45g of glucose

4.6g of C₂H₅OH & 3g of C₂H₆ have

The mass of SIC formed when 60g of Si₀₂ is reacted with excess of Carbon

How many atoms are there in 0.125 moles of Ss molecules?

lculate number of moles of K₂SO₄ produced when 14g KOH are reacted with excessof H₂SO₄:

What is the mass of same no. of atoms of potassium as are present in 11.5 g of sodium?

4 g H₂gas reacts with 8 g O₂ gas to form steam. How many moles of gases are there after the completion of reaction in vessel?

Actual yield will reach the ideal (theoretical) value if the % yield of the reaction is,

Efficiency of chemical reaction can be checked by calculating

he no. of protons in 1 mole of H₂:

A collection of 2NA helium atoms weighs.

If we consider 1/6 in place of 1/12 mass of carbon atom as the relative atomic mass unit, the mass of one mole of a substance will:

From the complete decomposition of 0.2 moles CaCO₃ at S.T.P. the volume of CO₂ obtained is

The mass of 2 moles of electrons is:

he number of moles of H₂O which contains 16g of oxygen

At STP, one mole of any gas may represent:

24g of each of carbon and oxygen react to form CO₂. The amount of unreacted element left behind is:

A limiting reactant is one

ow many moles of CO₂ are produced from 0.9 moles of 02 in the reaction C + O₂ -Cn2:

11.207 dm³ of methane (CH₄) at SIP has_moles of hydrogen atoms:

Given the equation CO₂(g) + C(s) -> 2 CO(g)Which of the following equivalences is not correct for the reaction,

he percentage of Ca in CaCO₃ is,

While finding the relative atomic mass, which of the following standard is used to compare the atomic mass.

A compound has an empirical formula CH₂CI, and molecular formula mass as 99gmol-1, identify the compound:

Calculate the grams of H₂O formed when 8 g of CH₄ burns in excess of oxygen.

Determinate the number of moles of O in 10.6g of Na₂ CO₃

he molar volume of SO₂ gas at SIP is,

When 8 grams (4 moles) of H₂ react with 2 moles of O₂, how many moles of water will be formed?

The weight of iron (Fe) which will be converted into Fe₃₀₄ by the action of 18 g of steam is; 3Fe + 4H₂O -> Fe₃O₄ + 4H₂

Total No. of electrons present in 1.6 g of methane.

What volume of oxygen is required for the complete combustion of a mixture of 5 cm³ of CH₄ and 5 cm³ of C₂H₄?