science
Grade-5
Easy
Question
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
- Only (I) and (II)
- Only (II) and (III)
- Only (III)
- Only (IV)
Hint:
Plastics are used as protective coating in electric wires.
The correct answer is: Only (III)
- Plastics are bad conductors of electricity which is why they are used to cover electric wires so that if anybody touches the wire they are not shocked by the current.
- Plastics are durable and chemically inert(unreactive) and are also bad conductors of heat that is why they are used in umbrellas, storage bottles and refrigerators.
Related Questions to study
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
science
Polyvinyl chloride is soft, ______, and lightweight plastic.
Polyvinyl chloride is soft, ______, and lightweight plastic.
scienceGrade-5
science
All plastics have ______ type of arrangement of units.
All plastics have ______ type of arrangement of units.
scienceGrade-5
science
Concise information about three different kinds of plastics is given in the table below.
Identify the P, Q, and R from the following:
Identify the P, Q, and R from the following:
Concise information about three different kinds of plastics is given in the table below.
Identify the P, Q, and R from the following:
Identify the P, Q, and R from the following:
scienceGrade-5
science
Categorize the below items of plastics into their different types
Categorize the below items of plastics into their different types
scienceGrade-5
science
Which of the following is/are not a property of plastics?
I. Plastics are non-combustible.
II. Plastics do not react with air and acids.
III. Plastics are insoluble in water.
IV. Plastics are a poor conductor of heat
I. Plastics are non-combustible.
II. Plastics do not react with air and acids.
III. Plastics are insoluble in water.
IV. Plastics are a poor conductor of heat
Which of the following is/are not a property of plastics?
I. Plastics are non-combustible.
II. Plastics do not react with air and acids.
III. Plastics are insoluble in water.
IV. Plastics are a poor conductor of heat
I. Plastics are non-combustible.
II. Plastics do not react with air and acids.
III. Plastics are insoluble in water.
IV. Plastics are a poor conductor of heat
scienceGrade-5
science
When hot water is placed into an empty plastic water bottle, the water bottle keeps its shape and does not soften. What type of plastic is the water bottle made from?
When hot water is placed into an empty plastic water bottle, the water bottle keeps its shape and does not soften. What type of plastic is the water bottle made from?
scienceGrade-5
science
Firefighter uniforms are coated with plastic that is fire resistant. What kind of plastic is used for this purpose?
Firefighter uniforms are coated with plastic that is fire resistant. What kind of plastic is used for this purpose?
scienceGrade-5
science
Read the given statements and mark the appropriate answer.
Statement 1: Polyethylene is synthesized from polymers by linking a large number of ethene units.
Statement 2: Polyethylene is a natural fiber
Statement 1: Polyethylene is synthesized from polymers by linking a large number of ethene units.
Statement 2: Polyethylene is a natural fiber
Read the given statements and mark the appropriate answer.
Statement 1: Polyethylene is synthesized from polymers by linking a large number of ethene units.
Statement 2: Polyethylene is a natural fiber
Statement 1: Polyethylene is synthesized from polymers by linking a large number of ethene units.
Statement 2: Polyethylene is a natural fiber
scienceGrade-5
