science
Grade-5
Easy
Question
Silver tarnish is
- Zinc oxide
- Copper oxide
- Silver sulfide
- Iron oxide
Hint:
Silver discolors when exposed to some gases.
The correct answer is: Silver sulfide
- When silver is exposed to sulfur containing gases it loses it shine gets tarnished.
- The compound made on surface is silver sulfide.
Related Questions to study
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
science
Plastics are widely used for the household articles because
Plastics are widely used for the household articles because
scienceGrade-5
science
See the figure given below and select the correct statements regarding plastics.
(i). Figure (a) shows the structure of a monomer, while figure (b) shows the structure of a polymer.
(ii). Figure (a) shows the structure of a linear polymer, while (b) shows the structure of a cross-linked polymer.
(iii).Small blocks in the structure represent monomers that are joined to give a polymer.
(i). Figure (a) shows the structure of a monomer, while figure (b) shows the structure of a polymer.
(ii). Figure (a) shows the structure of a linear polymer, while (b) shows the structure of a cross-linked polymer.
(iii).Small blocks in the structure represent monomers that are joined to give a polymer.
See the figure given below and select the correct statements regarding plastics.
(i). Figure (a) shows the structure of a monomer, while figure (b) shows the structure of a polymer.
(ii). Figure (a) shows the structure of a linear polymer, while (b) shows the structure of a cross-linked polymer.
(iii).Small blocks in the structure represent monomers that are joined to give a polymer.
(i). Figure (a) shows the structure of a monomer, while figure (b) shows the structure of a polymer.
(ii). Figure (a) shows the structure of a linear polymer, while (b) shows the structure of a cross-linked polymer.
(iii).Small blocks in the structure represent monomers that are joined to give a polymer.
scienceGrade-5
