**1. In limit state approach, the spacing of main reinforcement primarily controls _____.**

[A] Cracking

[B] Durability

[C] Collapse

[D] Deflection

**Answer: Option A**

**2. In limit state design of concrete structure, the strain distribution is assumed to be _____.**

[A] Linear

[B] Non-linear

[C] Parabolic

[D] Parabolic and Rectangular

**Answer: Option A**

**3. In limit state of serviceability, the partial safety factor for wind load is taken as _____.**

[A] 1.0

[B] 1.15

[C] 1.5

[D] 0.9

**Answer: Option A**

**4. In Ultimate Load Method, the load used in the design of R.C.C. structures refers to _____.**

[A] working load multiplied by a load factor

[B] total collapse load

[C] plastic load

[D] working load divided by a load factor

**Answer: Option A**

**5. Modulus of elasticity of concrete can be given as _____.**

[A] 2000 √f_{ck}

[B] 3700 √f_{ck}

[C] 5000√f_{ck}

[D] 5700 √f_{ck}

**Answer: Option C**