Bamboo is commonly used in the construction of scaffoldings, bridges and structures due to its: i) Strong fibre content ii) Elasticity iii) Tensile strength
- AAll of (i), (ii) and (iii) are correctCorrect
- B(i) and (iii) are correct.
- COnly (i) is correct.
- DOnly (ii) is correct.
Solution
Concept
Bamboo has strong fibres, good elasticity and high tensile strength, so it is used for scaffolding, bridges and light structures.
Step-by-step solution
1. Bamboo has long, strong fibres along its length. So (i) is correct. 2. Bamboo is elastic and flexible. It bends without breaking. So (ii) is correct. 3. Bamboo has high tensile strength, sometimes compared with mild steel per unit weight. So (iii) is correct. 4. All three statements are correct. Answer is (A).
Explanation
Bamboo is light, strong and flexible. Its strong fibres give it high tensile strength, and its elasticity lets it bend without breaking. That is why it is widely used for scaffolding, temporary bridges and huts.
Why the other options are wrong
B, C and D each leave out one or more correct properties. Bamboo has all three: strong fibres, elasticity and tensile strength.
Shortcut
Bamboo is strong, flexible and good in tension, so mark 'all are correct'.
Common mistake
Thinking bamboo is only flexible and forgetting its high tensile strength.
Correct answer: A) All of (i), (ii) and (iii) are correct