science
Grade-5
Easy
Question
Direction
Choose the correct option from the sentences below.
Statement A: Rust is iron oxide, silver tarnish is silver sulfide, and copper tarnish is copper oxide.
Statement B: Corrosion is the gradual “eating away” of a metal.
- Statement A is correct, and statement B is wrong.
- Statement B is correct, and statement A is wrong.
- Both the statements are correct.
- Both the statements are wrong.
Hint:
Corrosion happens when metal reacts with non metals.
The correct answer is: Both the statements are correct.
- Rust and copper tarnish are formed when iron and copper react with oxygen to form oxides leading to corrosion.
- Silver tarnish is formed when silver reacts with sulfur in the air.
- Corrosion leads to formation of compounds which do not have metal like properties hence it eats away the metal.
Related Questions to study
science
Identify a compound from the following:
Identify a compound from the following:
scienceGrade-5
science
Silver tarnish is
Silver tarnish is
scienceGrade-5
science
Rust is
Rust is
scienceGrade-5
science
During the process of corrosion
During the process of corrosion
scienceGrade-5
science
Corrosion ________ metals.
Corrosion ________ metals.
scienceGrade-5
science
Jewelry and other objects made with these as pure metals would not be worn very well.
Jewelry and other objects made with these as pure metals would not be worn very well.
scienceGrade-5
science
scienceGrade-5
science
What does malleable mean?
What does malleable mean?
scienceGrade-5
science
Complete the following analogy.
Plastics used for storing soft drinks: PET :: Plastic on which oil and water do not stick: _______
Plastics used for storing soft drinks: PET :: Plastic on which oil and water do not stick: _______
Complete the following analogy.
Plastics used for storing soft drinks: PET :: Plastic on which oil and water do not stick: _______
Plastics used for storing soft drinks: PET :: Plastic on which oil and water do not stick: _______
scienceGrade-5
science
Which of the following applications of plastics show(s) that plastics are bad conductors of electricity?
I. Chemicals are stored in plastic containers.
II. Umbrellas are made from plastics.
III. Electric wires have a plastic coating.
iv. Refrigerators have insulating wool of plastics
I. Chemicals are stored in plastic containers.
II. Umbrellas are made from plastics.
III. Electric wires have a plastic coating.
iv. Refrigerators have insulating wool of plastics
Which of the following applications of plastics show(s) that plastics are bad conductors of electricity?
I. Chemicals are stored in plastic containers.
II. Umbrellas are made from plastics.
III. Electric wires have a plastic coating.
iv. Refrigerators have insulating wool of plastics
I. Chemicals are stored in plastic containers.
II. Umbrellas are made from plastics.
III. Electric wires have a plastic coating.
iv. Refrigerators have insulating wool of plastics
scienceGrade-5
science
Which of the following options is correct for the following statements?
(i). Plastics are generally poor conductors of electricity.
(ii). Melamine is a special plastic on which oil and water do not stick.
(iii). Ropes made by Bakelite are used in cranes and elevators
(i). Plastics are generally poor conductors of electricity.
(ii). Melamine is a special plastic on which oil and water do not stick.
(iii). Ropes made by Bakelite are used in cranes and elevators
Which of the following options is correct for the following statements?
(i). Plastics are generally poor conductors of electricity.
(ii). Melamine is a special plastic on which oil and water do not stick.
(iii). Ropes made by Bakelite are used in cranes and elevators
(i). Plastics are generally poor conductors of electricity.
(ii). Melamine is a special plastic on which oil and water do not stick.
(iii). Ropes made by Bakelite are used in cranes and elevators
scienceGrade-5
science
Which of the following is the advantage of plastics?
Which of the following is the advantage of plastics?
scienceGrade-5
science
Like synthetic fibers, plastic is also a ……
Like synthetic fibers, plastic is also a ……
scienceGrade-5
science
Identify the product based on the given features.
I. It is a synthetic product.
II. It has a linear-linked arrangement of monomer units.
III. It is relatively resistant to sunlight and weather and used for making window frames.
I. It is a synthetic product.
II. It has a linear-linked arrangement of monomer units.
III. It is relatively resistant to sunlight and weather and used for making window frames.
Identify the product based on the given features.
I. It is a synthetic product.
II. It has a linear-linked arrangement of monomer units.
III. It is relatively resistant to sunlight and weather and used for making window frames.
I. It is a synthetic product.
II. It has a linear-linked arrangement of monomer units.
III. It is relatively resistant to sunlight and weather and used for making window frames.
scienceGrade-5
science
What type of plastic is this?
What type of plastic is this?
scienceGrade-5
