M18 SAINS UASA PENGARATAN TAHUN 5
Passage
•
Science
•
5th Grade
•
Practice Problem
•
Medium
MUHAMMAD Moe
Used 56+ times
FREE Resource
18 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Apakah yang dimaksudkan dengan karat?
(What is the meaning of rust?)
Lapisan berwarna kelabu berkilat pada permukaan logam.
(A shiny grey layer on the metal surface.)
Serbuk hitam yang terhasil apabila besi dibakar.
(A black powder produced when iron is burned.)
Lapisan berwarna perang-kemerahan pada permukaan besi.
(A reddish-brown layer on the surface of iron.)
Sejenis kulat yang tumbuh pada logam apabila basah.
(A type of fungus that grows on metal when it’s wet.)
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Antara objek berikut, yang manakah akan berkarat?
(Which of the following objects will rust?)
Paku besi (Iron nail)
Rantai emas (Gold chain)
Sudu plastik (Plastic spoon)
Kereta mainan aluminium (Aluminium toy car)
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Dalam keadaan manakah paku besi TIDAK akan berkarat?
(In which condition will an iron nail NOT rust?)
Terdedah kepada air dan udara. (Exposed to water and air.)
Direndam dalam air yang telah dididihkan dan ditutup dengan lapisan minyak (tiada udara). (Submerged in boiled water sealed with an oil layer – no air present.)
Dibiarkan dalam udara yang lembap. (Left in humid (moist) air.)
Diletakkan dalam larutan air garam. (Placed in a saltwater solution.)
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Satu penyiasatan menggunakan dua tabung uji dijalankan selama seminggu:
(An investigation uses two test tubes for one week:Tabung uji A: Paku besi dalam air paip yang terdedah kepada udara.
Tube A: an iron nail in tap water exposed to air.
Tabung uji B: Paku besi dalam air didih yang ditutup dengan minyak (tiada udara, ditutup rapat).
Tube B: an iron nail in boiled water sealed with oil (no air).
Apakah pemerhatian terhadap keadaan paku besi dalam tabung uji A dan B selepas seminggu?
What is the observed condition of the iron nail in Tube A and Tube B after one week?)
Paku A berkarat; Paku B tidak berkarat.
(Nail in A rusted; Nail in B not rusted.)
Paku A tidak berkarat; Paku B berkarat.
(Nail in A not rusted; Nail in B rusted.)
Kedua-dua paku berkarat.
(Both nails rusted.)
Kedua-dua paku tidak berkarat.
(Both nails did not rust.)
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Berdasarkan gambar, apakah satu ciri objek berkarat yang dapat dilihat pada paku tersebut?
(Based on the image, what is one characteristic of a rusted object observable on the nail?)
Permukaan licin dan berkilat. (Smooth and shiny surface.)
Berwarna perang-kemerahan pada permukaannya. (Brownish-red in color on its surface.)
Logam menjadi lebih kuat dan keras. (The metal becomes stronger and harder.)
Permukaannya diliputi kulat. (Its surface is covered in mold.)
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Cincin emas dalam rajah tidak berkarat walaupun terdedah kepada air dan udara. Mengapakah demikian?
(The gold ring in the figure does not rust even when exposed to water and air. Why is that?)
Emas tidak bertindak balas dengan oksigen untuk menghasilkan karat.
(Gold does not react with oxygen to produce rust.)
Emas menyerap air dan menghalang proses pengaratan.
(Gold absorbs water and thus prevents rusting.)
Cincin emas itu telah disalut dengan gris lutsinar.
(The gold ring has been coated with a transparent grease.)
Udara tidak dapat menembusi permukaan cincin kerana dilindungi permata.
(Air cannot reach the ring’s surface because it’s protected by gemstones.)
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Apakah cara terbaik untuk mencegah tin makanan daripada berkarat?
(What is the best method to prevent a food can from rusting?)
Mengecat permukaan tin. (Painting the can’s surface.)
Menyapu minyak gris pada tin. (Applying grease/oil on the can.)
Menyalut tin dengan plastik. (Coating the can with plastic.)
Menyadur tin tersebut dengan logam timah. (Plating the can with tin metal.)
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