Carbon and Its Compounds One Mark Online Test

Carbon and Its Compounds One Mark Online Test (10th Standard Science)

Pick how many questions you want and set a time limit, then start. You'll get your score at the end with the correct answer and an explanation for every question. Free, in Tamil and English — 24 questions available.

Set up your test

Number of questions

Time limit

Time remaining00:00

The molecular formula of an open chain organic compound is C3H6. The class of the compound is

A.alkane B.alkene C.alkyne D.alcohol

The IUPAC name of an organic compound is 3-Methyl butan-1-ol. What type compound it is?

A.Aldehyde B.Carboxylic acid C.Ketone D.Alcohol

The secondary suffix used in IUPAC nomenclature of an aldehyde is ____

A.- ol B.- oic acid C.- al D.- one

Which of the following pairs can be the successive members of a homologous series?

A.C3H8 and C4H10 B.C2H2 and C2H4 C.CH4 and C3H6 D.C2H5OH and C4H8OH

C2H5OH + 3O2 → 2CO2 + 3H2O is a

A.Reduction of ethanol B.Combustion of ethanol C.Oxidation of ethanoic acid D.Oxidation of ethanal

Rectified spirit is an aqueous solution which contains about _______ of ethanol

A.95.5 % B.75.5 % C.55.5 % D.45.5 %

Which of the following are used as anaesthetics?

A.Carboxylic acids B.Ethers C.Esters D.Aldehydes

TFM in soaps represents ___________ content in soap

A.mineral B.vitamin C.fatty acid D.carbohydrate

Which of the following statements is wrong about detergents?

A.It is a sodium salt of long chain fatty acids B.It is sodium salts of sulphonic acids C.The ionic part in a detergent is –SO3 – Na+ D.It is effective even in hard water.

Q10

What is the difference in molecular mass between any two successive members of a homologous series?

A.12 amu B.14 amu C.16 amu D.28 amu

Q11

Which functional group is present in organic compounds that impart a sweet fruity smell?

A.-CHO B.-COOH C.-COOR D.-OH

Q12

Which of the following organic compounds is classified as a heterocyclic compound?

A.Benzene B.Cyclobutane C.Propane D.Furan

Q13

An unsaturated hydrocarbon has four carbon atoms and contains one triple bond. What is its molecular formula?

A.C4H10 B.C4H8 C.C4H6 D.C4H4

Q14

What is the percentage purity of ethanol present in absolute alcohol?

A.95.5% B.100% C.75% D.50%

Q15

What are the primary reactants used in the preparation of soap through saponification?

A.Mineral acid and alcohol B.Oil or fat and aqueous alkali C.Hydrocarbon and chlorine gas D.Carboxylic acid and ester

Q16

In a micelle formed by soap in water, how are the hydrophobic tails oriented?

A.Pointing outward toward water B.Directed inward toward the oil or dirt droplet C.Dissolved completely in water D.Bonded covalently to sodium ions

Q17

When bromine water is added to an unsaturated hydrocarbon like ethene, what visual change occurs?

A.Turns dark blue B.Decolourizes from reddish-brown to colourless C.Forms a white precipitate D.Evolves effervescence of gas

Q18

According to IUPAC nomenclature, what is the root word used for a parent carbon chain containing 6 carbon atoms?

A.Pent- B.Hex- C.Hept- D.Oct-

Q19

Which gas is liberated when ethanoic acid reacts with sodium bicarbonate?

A.Hydrogen B.Oxygen C.Carbon dioxide D.Nitrogen dioxide

Q20

Heating ethanol with concentrated sulphuric acid at high temperature results in the formation of which compound?

A.Ethane B.Ethene C.Ethanoic acid D.Diethyl ether

Q21

Why are synthetic detergents effective cleansing agents even in hard water?

A.They do not form foam with soft water B.Their calcium and magnesium salts are soluble in water C.They contain no hydrocarbon chains D.They are completely insoluble in water

Q22

The unique ability of carbon atoms to form covalent bonds with other carbon atoms to build long chains is known as what?

A.Isomerism B.Tetravalency C.Catenation D.Polymerization

Q23

What is the systematic IUPAC name for acetic acid (CH3COOH)?

A.Methanoic acid B.Ethanoic acid C.Propanoic acid D.Butanoic acid

Q24

Organic compounds that have the same molecular formula but different structural arrangements are called what?

A.Allotropes B.Isotopes C.Isomers D.Homologs

More for this chapter

About this Carbon and Its Compounds test

This free online practice test covers Carbon and Its Compounds from the 10th Standard Science (Samacheer Kalvi) syllabus. Choose the number of questions and an optional time limit, then answer and submit — everything is checked in your browser, with the correct answers and a worked explanation shown at the end. For the full solutions to every question in this set, see the solved MCQs page.

More chapters in Science

View all