Pick up the correct statement from the following:

Question:
Pick up the correct statement from the following:

1.The free quartz suddenly expands at a temperature lower than 600°C

2.The lime stone resists fire upto about 800°C and at higher temperature it splits into CaO and CO2

3.The sand stone with silicates resist a fire in a better way

4.All the above.

Posted Date:-2021-03-26 00:45:57


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