BARC OCES 2022 Quiz 2

Consider the following particulars with respect to a concrete mix design –

What shall be the weight of the coarse aggregate?

The number of cement bags required in making plain cement flooring in an area of size 4 × 5 m and 150mm thick using cement concrete of mix 1: 3: 6 is -

In the context of provisions relating to durability of concrete, consider the following assertion:

Assertion (1): As per IS 456-2000, air entrainment to the extent of 3% to 6% is required for concrete exposed to marine environment.

Assertion (2): The equivalent alkali content (in terms of Na₂O equivalent) for a cement containing 1% and 0.6% of Na₂O and K₂O, respectively, is approximately 1.4% (rounded to 1 decimal place).

Which one of the following statements is correct?

At shrinkage limit, the degree of saturation, in percentage, of soil is:

Relative density of a compacted dense sand is approximately equal to:

Given for a sample of a river sand:

Void ratio at the densest state = 0.40

Void ratio at the loosest state = 1.20

Which one of the following correctly represents the relative density of a sample prepared with a void of 1.0?

The numerical difference between liquid limit and plastic limit is:

A fully saturated soil is said to be