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Which of the following metals does not react with water to produce hydrogen?
"Electrons always occupy the lowest empty energy level" is a statement of
If 20 cm\(^3\) of sodium hydroxide was neutralized by 20 cm\(^3\) of 0.01 mol dm\(^3\) tetraoxosulphate(VI) acid, what is the concentration of the sodium hydroxide solution?
How many moles of H\(_2\)SO4 are there in 50 cm\(^3\) of 0.108 mol dm\(^3\) solution of the acid?
Which of the following statements about the solubility of a salt is correct?
Which of the following hydroxides is not readily soluble in water?
Which of the following oxides has a giant covalent structure?
The bond between NH\(_3\) and H\(^+\) in NH4\(^+\) is?
When 250 cm3 of a saturated solution of CuSO\(_4\) at 30°C was evaporated to dryness, 5.0 g of the salt was obtained..
What is the solubility of the salt at 30°C? [CuSO\(_4\) = 160]
What volume of oxygen at s.t.p is required to burn completely 7.5 dm\(^3\) of methane according to the following equation?
CH\(_4\) \(_g\) + 20\(_2\) \(_g\) → CO\(_2\) \(_g\) + H\(_2\)O\(_g\)
The initial volume and pressure of a given mass of gas is V and 3.P. What is its pressure if its volume is increased to 2V at constant temperature?
f 5.0 cm\(^-3\) of 0.200 mol dm(^-3\) Na\(_2\)CO\(_3\) was diluted to 250cm(^-3\) solution, what would be the concentration of the resulting solution?
Which of the following standard conditions is not correct about energy changes?
Which of the following reactions are always exothermic? 1. Neutralization Il. Decomposition III. Combustion
Which of the following statements is correet for a reaction at equilibrium?
Which of the following substances is not a reducing agent?
Which of the following compounds would release hydrogen when reacted with sodium metal?
I. CH\(_3\)COOH
II. CH\(_3\)CH\(_2\)OH
III. CH\(_3\)COOCH\(_3\)
An alkanol containing 60% carbon by mass would have a molecular formula [H=1.0. C-12.0, O= 16.0]
Which of the following compounds has the lowest boiling point?
The type of isomerism exhibited by cis and trans isomers is?