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WorksheetsLEMAK DAN GETAH
Total questions: 20
Worksheet time: 10mins
Natural rubber also known as / Getah asli juga dikenali sebagai...
Polyisoprene / Poliisoprena
Poly-2-methylbutene / Poli-2-metilbutena
Polysacharide / Polisakarida
Polypeptide / Polipeptida
Which of the following is true? Yang manakah di antara berikut adalah benar?
Vulcanised rubber is softer than unvulcanised rubber / Getah tervulkan lebih lembut daripada getah tak tervulkan
Unvulcanised rubber is less elastic than vulcanised rubber / Getah tak tervulkan kurang kenyal daripada getah tervulkan
Unvulcanised rubber is stronger than vulcanised rubber / Getah tak tervulkan lebih kuat daripada getah tervulkan
Vulcanisation is
Pemvulkanan ialah
A process whereby a substance in aqueous solution is decomposed into its constituent elements.
Proses di mana bahan dalam keadaan larutan akueus diuraikan kepada unsur juzuknya.
A reaction between an acid and an alkali to produce salt and water.
Tindak balas di antara asid dan alkali untuk menghasilkan garam dan air.
A process of adding sulphur to natural rubber molecules.
Proses penambahan sulfur kepada molekul-molekul getaj asli
A process of converting liquid fat into solid fat.
Proses penukaran lemak cecair kepada lemak pepejal.
Which of the following is not the uses of natural rubber?
Yang manakah bukan kegunaan getah asli?
To produce rain coat
Membuat baju hujan
To produce tyre
Membuat tayar
To produce rubber band
Membuat gelang getah
To produce gloves
Membuat sarung tangan
Which of the following is not a reason for vulcanisation?
Yang manakah bukan sebab untuk pemvulkanan?
To improve the elasticity of rubber
Menambah kekenyalan getah
To improve the strength of rubber
Menambah kekuatan getah
To improve the hardness of rubber
Menambah kekerasan getah
To produce a rubber that is easily oxidised
Menghasilkan getah yang mudah dioksidakan
When sulphur is added,
Apabila sulfur ditambah,
The rubber becomes softer
Getah menjadi lembut
The rubber becomes less elastic
Getah menjadi kurang elastik
The rubber becomes less resistant to heat
Getah menjadi kurang tahan terhadap haba
The rubber cannot oxidised easily
Getah tidak mudah teroksida
The following substances can prevent latex from coagulates, except
Bahan berikut boleh menghalang lateks daripada menggumpal, kecuali
Vinegar
Cuka
Dilute sodium hydroxide solution
Larutan natrium hidroksida cair
Ammonia solution
Larutan ammonia
What is the function of sulphur in vulcanised rubber?
Rubber can return to its original shape after being stretched
Getah boleh kembali ke rupa asal selepas diregang
Rubber becomes longer than its original shape after being stretched
Getah menjadi lebih panjang daripada asal selepas diregang
Rubber can be melts easily when exposed to heat
Getah mudah untuk cair apabila terdedah kepada haba
Which substance is used to prevent coagulation of lates?
Bahan manakah yang boleh diguna untuk menghalang penggumpalan lateks?
Ethanoic acid
Asid etanoik
Methanoic acid
Asid metanoik
Ethyl ethanoate
Etil etanoat
Ammonia solution
Larutan ammonia
How hydrochloric acid can cause coagulation of latex?
Hydroxide ion neutralised the negatively-charge protein membrane of rubber particles.
Ion hidroksida meneutralkan membran protein getah yang bercas negatif
Hydrogen ion neutralised the negatively-charge protein membrane of rubber particles.
Ion hidrogen meneutralkan membran protein getah yang bercas negatif
Hydrogen ion neutralised the positively-charge protein membrane of rubber particles.
Ion hidrogen meneutralkan membran protein getah yang bercas positif
Tyre and rubber shoes are made of
Tayar dan kasut getah diperbuat daripada
Vulcanised rubber
Getah tervulkan
Natural rubber
Getah asli
Polyvinyl chloride
Polivinil klorida
Name the process of adding sulphur to natural rubber. Is the process good for industry?
Namakan proses penambahan sulfur kepada getah asli. Adakah proses itu baik untuk industri?
Hydrogenation. Yes
Penghidrogenan. Ya
Neutralisation. No
Peneutralan. Tidak
Esterification. Yes
Pengesteran. Ya
Vulcanisation. Yes
Pemvulkanan. Yes
Based on the information in the table, which rubber strip is vulcanised rubber? Berdasarkan maklumat dalam jadual, jalur getah manakah ialah getah tervulkan?
Rubber band A
Jalur getah A
Rubber band B
Jalur getah B
A
B
C
D
A
B
C
D
A
B
C
D
A
B
C
D
A
B
C
D
A
B
C
D
A
B
C
D
