alleryStart learning →Polythene is made by polymerising:
- Ethyne
- Propene
- Ethene
- Styrene
Show answer and solution
Correct answer: C. Ethene
Many ethene molecules join at high temperature and pressure with a catalyst to form polythene.
MHT-CET Hydrocarbons — practice questions — page 3
Explore 90 free Hydrocarbons questions in MHT-CET Chemistry. Open each question or exercise to read its content, reference answers and available explanation.
Practise Hydrocarbons with Quill →Hydrocarbons questions and exercises with answers
Showing questions 61–90 of 90.
Polythene is made by polymerising:Read the answer and worked solution →Milk crates and plastic buckets are commonly moulded from:Read the answer and worked solution →Which hydrocarbon is burnt with oxygen in welding torches?Read the answer and worked solution →How many pi bonds are present in one ethyne molecule?Read the answer and worked solution →Industrially, ethyne is made by treating calcium carbide with:Read the answer and worked solution →Ethyne is more acidic than ethene because its carbon orbitals have:Read the answer and worked solution →Which compound does not react with sodamide to give a salt?Read the answer and worked solution →Ethyne reacts with sodium metal to give sodium acetylide and:Read the answer and worked solution →Propyne with dilute H2SO4 and HgSO4 gives mainly:Read the answer and worked solution →Which polymer made from ethyne can conduct electricity?Read the answer and worked solution →Aromatic compounds that lack a benzene ring are called:Read the answer and worked solution →How many position isomers does dibromobenzene have?Read the answer and worked solution →In a disubstituted benzene, the 1,2 relationship is called:Read the answer and worked solution →Benzene was first isolated in 1825 by:Read the answer and worked solution →Kekule's fixed structure predicted how many 1,2-dibromobenzenes?Read the answer and worked solution →A planar cyclic conjugated ring is aromatic if its pi electron count is:Read the answer and worked solution →Every C-C bond length in benzene is about:Read the answer and worked solution →X-ray diffraction shows that the benzene molecule is:Read the answer and worked solution →Commercially, benzene is obtained from:Read the answer and worked solution →Which aromatic hydrocarbon is used in moth repellent balls?Read the answer and worked solution →The characteristic reactions of arenes are:Read the answer and worked solution →The nitrating mixture for benzene is concentrated HNO3 with:Read the answer and worked solution →Friedel-Crafts alkylation of benzene uses an alkyl halide and:Read the answer and worked solution →Benzene with hydrogen over nickel at high temperature gives:Read the answer and worked solution →When burnt in air, benzene gives a:Read the answer and worked solution →The arenium ion is not aromatic because:Read the answer and worked solution →In chlorobenzene, the chlorine atom is:Read the answer and worked solution →Polynuclear hydrocarbons from burning tobacco are harmful because they are:Read the answer and worked solution →Industrial epoxidation of ethylene with oxygen uses a catalyst based on:Read the answer and worked solution →When irradiated with UV light, alkenes dimerise to give:Read the answer and worked solution →
Worked practice questions
Milk crates and plastic buckets are commonly moulded from:
- Polypropene
- Polyacetylene
- Natural rubber
- Nylon fibre
Show answer and solution
Correct answer: A. Polypropene
Polypropene is used for moulded articles such as milk crates and buckets.
Which hydrocarbon is burnt with oxygen in welding torches?
- Ethene
- Methane
- Benzene
- Ethyne
Show answer and solution
Correct answer: D. Ethyne
Acetylene mixed with oxygen gives the very hot oxyacetylene welding flame.
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