ZONE TECH Objective Questions Series | ZONE TECH

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Questions

Which of the following statements related to manufacturing of the given materials is correct?

1. Asphalt is manufactured by fractional distillation of crude petroleum.

2. Tar is manufactured by fractional distillation of organic materials.
A semi rigid material which forms an excellent impervious layer for damp proofing is termed as
Which of the following type of coarse aggregate is preferred in road construction, so that greatest density of road layer is achieved?
As per IS 383 : 2016, the maximum utilization of recycled concrete aggregates (RCA) as coarse aggregates when used in lean concrete is (in %)
As per IS : 303 and 10701, the thickness of 5 ply plywood boards for structural purpose are available in
The density of wood used for construction in the ranges between
AsCu, a preservative for wood, developed by the Forest Research Institute, Dehradun, comprises of chemicals : As₂O₅.2H₂O, CuSO₄.5H₂O and K₂Cr₂O₇ in the proportion of
Consider the following statements:

1. The viscosity-modifying agents allow the concrete to remain cohesive even with a high degree of fluidity.

2. Self-consolidating concrete can be used for beam-column joints in earthquake resistant structures.

3. Self-consolidating concrete is not recommended for precast prestrsessed concrete.

Which of the above statements are correct?

Match List-I (Type of jobs) with List-II (Type of Equipment) and select the correct answer using the codes:

List-I

A. Handling stiff and cohesive mixes used in the manufacturing of precast concrete

B. Road construction where space and access are limited

C. Consolidating concrete in thin slabs

D. Vibrating both the form and the concrete

List-II

1. External vibrator

2. Dual drum mixers

3. Pan mixers

4. Electric hammer

5. Vibrating roller

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