Which of the following compounds crystallizes without water of crystallization?
A. MgSO4 B. Na2CO3 C. NaCI D. FeSO4 Correct Answer: Option C C. NaCIWhich of the following acids would readily react with CaCO3 to liberate CO2?
A. CH3COOH B. H2SO4 C. H2SO3 D. HNO3 Correct Answer: Option B B. H2SO4 Explanation H2SO4(aq)+CaCO3(aq)→CaSO4(aq)+CO2(g)+H2O(l)The aqueous solution which has pH > 7 is?
A. FeCI3(aq) B. CuSO4(aq) C. KNO3(aq) D. Na2CO3(aq) Correct Answer: Option D D. Na2CO3(aq)When heat is absorbed during a chemical reaction, the reaction is said to be?
A. adiabatic B. endothermic C. exothermic D. isothermal Correct Answer: Option B B. endothermicWhich of the following gases are arranged in increasing order of diffusion rate? [H = 1 .0; C = 12; N = 14; O = 16; S = 32]
A. SO2, O2, NH3, H2 B. H2S, NH3, O2, SO2 C. CO2, N2O, O2, SO2 D. NH3, NO2, N2, CO2 Correct Answer: Option A A. SO2, O2, NH3, H2Products
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