CE264 students performed the setting time of cement using Vicat Needle. They set the stopwatch to 0 at the start of the experiment. The needle penetrates the cement paste for about 42-min time mark in 25mm penetration. The needle cannot penetrate on it until 2hours and 13mins. How many hours and minutes will be the setting time of cement? Explain why. SHOW SOLUTIONS AND FINAL ANSWER IN 2 DECIMAL PLACES

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