Loading...
UPSC 2006: Assertion (A): Cellulose is used in making shatter-proof glass. Reason (R): Polysaccharides are not soluble in water.
(a)Both A and R are true and R is the correct explanation of A
(b)Both A and R are true but R is not a correct explanation of A
(c)A is true but R is false
(d)A is false but R is true
Attempt This Question
Not attemptedCorrect Answer: (a) Both A and R are true and R is the correct explanation of A
Édouard Bénédictus’s first laminated safety (shatter-proof) glass used a sheet of celluloid— a cellulose-nitrate plastic—between two glass layers; later cellulose acetate films were also used. Cellulose is a polysaccharide, and polysaccharides such as cellulose are insoluble in water, a property that keeps the lamina stable inside the glass. Thus both A and R are true and R correctly explains A, so option (a) is right. ([britannica.com](https://www.britannica.com/technology/safety-glass?utm_source=openai))
Related UPSC Questions
More from Materials & Engineering
2007moderate
Consider the following statements: 1. The series of international paper sizes is based on A0 size whose area is 0.5 m² (approx). 2. The area of A4 siz
2007moderate
Which one of the following types of glass can cut off ultraviolet rays?
2012moderate
Graphene is frequently in news recently. What is its importance? 1. It is a two-dimensional material and has good electrical conductivity. 2. It is on
Related Science & Technology Topics
2006Chemistry
Consider the following chemicals: 1. Benzene 2. Carbon tetrachloride 3. Sodium carbonate 4. Trichloroethylene Which of the above is/are used as dry-c
2006Health & Diseases
Consider the following statements: 1. Caffeine, a constituent of tea and coffee, is a diuretic. 2. Citric acid is used in soft drinks. 3. Ascorbic aci
Frequently Asked Questions
What is the correct answer to this UPSC 2006 Science & Technology question?▼
The correct answer is option (a): Both A and R are true and R is the correct explanation of A. Watch the detailed video explanation in our Sherlocking Prelims course on UnlockIAS.
Which year was this Materials & Engineering question asked in UPSC Prelims?▼
This question was asked in UPSC CSE Prelims 2006, GS Paper 1, as Question 19. It falls under Science & Technology > Materials & Engineering.
What is the difficulty level of this UPSC question?▼
This question is rated "moderate". It requires sound conceptual understanding of the topic.
How many UPSC Prelims questions have been asked from Materials & Engineering?▼
UPSC has asked 23 questions from Materials & Engineering (under Science & Technology) across multiple years. Visit the topic page to see the full list and year-wise trends.