What is the molecular formula of a compound with empirical CH2O and vapour density of…
What is the molecular formula of a compound with empirical CH2O and vapour density of 90? [H =…
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Which of the following oxides of nitrogen has oxidation number of + 1?
Which of the following oxides of nitrogen has oxidation number of + 1? A. KNO3 B. N2O C.…
The separation of petroleum fractions depends on the differences in their
The separation of petroleum fractions depends on the differences in their A. boiling points B. molar masses C.…
Which of the following raw materials is used in the plastic industry ?
Which of the following raw materials is used in the plastic industry ? A. Calcium B. Ethene C.…
The product of the reaction between C 2H5OH and concentrated H2SO 4 at 170oC is
The product of the reaction between C 2H5OH and concentrated H2SO 4 at 170oC is A. (C2H5)2SO4 B.…
Which of the following factors will affect the rate of the reaction represented by the…
Which of the following factors will affect the rate of the reaction represented by the equation? 2HCI(aq) +…
Which of the following substances is the anode in the dry Leclanche cell ?
Which of the following substances is the anode in the dry Leclanche cell ? A. Carbon rod B.…
Consider the reaction represented by the equation: 2H2SO 4(aq0 + C(s) → 2H2O(l) + 2SO2(g)…
Consider the reaction represented by the equation: 2H2SO 4(aq0 + C(s) → 2H2O(l) + 2SO2(g) + CO 2(g)…
Which of the following salts is insoluble in water?
Which of the following salts is insoluble in water? A. Pb (NO3)2 B. Na 2CO3 C. AgNO3 D.…
Which of the following statement is correct? The solubility of
Which of the following statement is correct? The solubility of A. gases increases with increase in temperature B.…