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Standard VIII
Chemistry
Rayon
Question

Read the following statement and mark the correct answer

I. Artificially prepared synthetic fibre which resembles silk is known as terylene.
II. Rayon is not considered a synthetic fibre as it is regenerated from cellulose.

III. Bottles and jars are made up of PET.

  1. Statement I is false, II and III are true
  2. Statement I is true, II and III are false
  3. Statement I and II are false, III is true
  4. Statement II is true, I and II are false

A
Statement I is false, II and III are true
B
Statement I is true, II and III are false
C
Statement II is true, I and II are false
D
Statement I and II are false, III is true
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Solution
Verified by Toppr

1. Terylene is a synthetic polyester fibre whereas rayon is artificial silk
Thus, statement I is false.
2. Rayon was the first manufactured fibre. It is made from wood pulp, a naturally occurring, cellulose-based raw material. But it requires chemical processing. So, rayon is neither considered a synthetic fibre nor a natural fibre. Instead, it is considered to be a semi-synthetic fibre. Thus, statement II is true.
3. PET is used to made bottles and jars. Thus, statement III is true.
Hence, the correct option is A

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Similar Questions
Q1
Read the following statement and mark the correct answer

I. Artificially prepared synthetic fibre which resembles silk is known as terylene.
II. Rayon is not considered a synthetic fibre as it is regenerated from cellulose.

III. Bottles and jars are made up of PET.

View Solution
Q2

Question 25
Indicate whether the following statements are true or false. Also write the false statements in their correct form.

(i) The fabric terry wool is obtained by mixing terylene and wool.
(ii) Synthetic fibres do not melt on heating.
(iii) It is risky to wear synthetic clothes while working in the kitchen.
(iv) Most of the plastics are biodegradable.
View Solution
Q3

Question 29

In a pair of adjacent angles, (i) vertex is always common (ii) one arm is always common, and (iii) uncommon arms are always opposite rays. then
(a) all (i), (ii) and (iii) are true
(b) (iii) is false
(c) (i) is false but (ii) and (iii) are true
(d) (ii) is false


View Solution
Q4
Statement I: A thread made of cotton is stronger than the identical thread made of nylon.
Statement II: Acrylic fibres are also known as artificial wool.
Statement III: Rayon is an example of semi-synthetic fibre.

Which of the given statements is/are correct?

View Solution
Q5
Consider the following statements:
I. If the roots of the equation ax2+bx+c=0 are negative reciprocal of each other, than a + c = 0.
II. A quadratic equation can have at all most two roots.
III. If α, β are the roots of x2-22x+105=0, then α + β = 22 and α − β = 8.

Of these statements:
(a) I and II are true and III is false.
(b) I and III are true and II is false.
(c) II and III are true I is false.
(d) I, II and III are all true.
View Solution