WorksheetsRUBBER SET 1
Total questions: 15
Worksheet time: 8mins
What should be done to natural rubber to produce tyres that are harder and more heat resistant?
Apakah yang perlu dilakukan kepada getah asli untuk menghasilkan tayar yang lebih keras dan tahan haba?
heat with sulphur
panaskan dengan sulfur
add iron wire
tabahkan dengan ferum
add ammonia solution
tambahkan larutan ammonia
add ethanoic acid
tambahkan asid etanoik
SBR means
Maksud SBR
Styrene butadiene rubber
getah stirena butadiena
Styrene butadiene resin
Resin stirena butadiena
Styrene butane rubber
Getah stirena butana
A rubber tapper finds that latex coagulates after several hours. What substance should be added into the latex to prevent it from coagulating?
Penoreh getah mendapati lateks menggumpal selepas beberapa jam.Apakah bahan yang sepatutnya ditambahkan untuk menghalang ia daripada menggumpal?
Ethanoic acid
Asid etanoik
Sodium chloride solution
Larutan natrium klorida
Ammonia solution
Larutan ammonia
Disulphur dichloride
Disulfur diklorida
The aircraft tyres are made from vulcanised rubber. What property of vulcanised rubber makes it suitable to be used for making these aircraft tyres?
Tayar kapal terbang diperbuat daripada getah tervulkan.Apakah sifat getah tervulkan yang menyebabkan ianya sesuai untuk dijadikan tayar kapal terbang?
it resist to oxidation
Tahan pengoksidaan
it is harder and stronger
Lebih keras dan kuat
it can maintain their elasticity
Boleh mengekalkan kekenyalannya
it can withstand tremendous stress
Boleh menahan hentakan yang besar
Substance P turns white latex milk into yellow solid. What is substance P?
Bahan P menukarkan lateks yang berwarna putih susu kepada pepejal kuning.Apakah bahan P?
Ammonia solution
larutan ammonia
Ethanoic acid
Asid etanoik
Potassium hydroxide solution
Larutan kalium hidroksida
Potassium chloride solution
Larutan kalium klorida
Which of the following is the monomer of natural rubber?
Manakah antara berikut adalah monomer bagi getah asli?
The protein membrane of natural rubber is surrounded by negative charge. What is the name of a process if the natural rubber is added with ethanoic acid?
Getah asli dikelilingi dengan dengan membran protein yang bercas negatif.Apakah nama proses yang berlaku jika asid etanoik ditambahkan pada getah asli?
Vulcanisation
Pemvulkanan
Polymerisation
Pempolimeran
Coagulation
Penggumpalan
Hydrogenation
Penghidrogenan
Which of the following is not the property of natural rubber?
Manakah antara berikut bukan sifat getah asli?
Sensitive to heat
Sensitif dengan haba
Elasticity decreases over time
Kekenyalan berkurang dengan masa
Easily oxidized by air
Mudah teroksida dalam udara
Hard and brittle
Keras dan rapuh
Vulcanised rubber produced from irradiation is more environmental friendly because it is
Getah tervulkan yang terhasil daripada sinaran lebih mesra alam kerana
easily oxidised
Mudah teroksida
free from sulphur
bebas daripada sulfur
unsaturated
tak tepu
Fresh latex will coagulate if left overnight because
Lateks yang segar akan menggumpal apabila dibiarkan semalaman kerana
Latex produce lactic acid
Lateks menghasilkan asid laktik
Latex oxidised by oxygen in the air
Lateks teroksida dengan oksigen dalam udara
The bacteria in the air produce lactic acid to react with protein membrane.
Bakteria di dalam udara menghasilkan asid laktik untuk bertindak balas dengan membran protein
The bacteria in air produce alkaline to react with protein membrane
Bakteria dalam udara menghasilkan alkali untuk bertindakbalas dengan membran protein
The IUPAC name of natural rubber is
Nama IUPAC bagi getah asli ialah
poly(chloroethene)
Poli (kloroetena)
poly(2-methylbut-1,3-diene)
Poli (2- metilbut -1,3- diena)
poly(tetrafluroethene)
Poli ( tetrafluoroetena)
polymethyl methacrylate
Polimetil metakrilat
Natural rubber cannot withstand heat. Which process can make natural rubber harder?
Heat the natural rubber with copper (II) oxide
Heat the natural rubber with methane gas
Dip the natural rubber with ammonia solution
Dip the natural rubber in solution of disulphur dichloride in methyl benzene
Which of the following is true about vulcanized and unvulcanized rubber?
Manakah antara berikut adalah benar tentang getah tervulkan dan tak tervulkan
Vulcanized rubber is less elastic than unvulcanized rubber
Getah tervulkan kurang kenyal berbanding getah tak tervulkan
Vulcanized rubber become soft and sticky easily compared to unvulcanized rubber
Getah tervulkan mudah menjadi lembut dan melekit berbanding getah tak tervulkan
Vulcanized rubber is stronger than unvulcanized rubber
Getah tervulkan lebih kuat daripad getah tak tervulkan
Vulcanized rubber is more easily oxidised than unvulcanized rubber
Which synthetic rubber can be used to manufacture medical implants?
Getah sintetik manakah yang boleh digunakan untuk menghasilkan implan perubatan?
Silicone rubber
Getah silikon
Neoprene
Neoprena
Nitrile rubber
Getah nitril
Styrene-butadiene
Stirena butadiena
Nitrile rubber is resistant to heat and solvent. It is suitable for making
Getah nitril tahan kepada haba dan pelarut.Ia sangat sesuai untuk membuat
gloves
sarung tangan
tyres
tayar
cooking utensils
peralatan memasak
conveyor belts
tali sawat
