WBBSE Madhyamik Vocational Construction Practice Questions - West Bengal Board Class 10 Secondary Vocational Examination Construction (Masonry Trade - NSQF Level 2) Exam

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What is the standard initial setting time required for Ordinary Portland Cement (OPC) under standard testing conditions?

Not more than 15 minutes Not more than 30 minutes Not less than 30 minutes Not less than 600 minutes

Correct Answer:

Not less than 30 minutes

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