Carbon and Its Compounds Additional One Mark Online Test

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

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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

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

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

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

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

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

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

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

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

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

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

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-

Q10

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

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

Q11

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

Q12

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

Q13

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

Q14

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

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

Q15

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

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

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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.

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