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What is the value of x in the following equation? Cr2O72- + 14H+ + xe- → 2Cr3+ + 7H2O
Which of the following will displace copper from a solution of copper (ll) salt?
A finely divided form of a metal burns more readily in air than the rod form because the rod has
What is the effect of using vanadium (V) oxide as catalyst in the reaction represented by the following equation? 2SO2 + O2 ⇌ 2SO3; ∆H = - xKJmol-1
Chemical equilibrium is attained when
What type of reaction is involved when wood shavings produce a brown gas with concentrated HNO3?
Which of the following salts is an acid salt?
Which of the following compounds dissolves in water to give an alkaline solution?
Which of the following salts is stable to heat?
If a solution has a pH of 2, it can be concluded that it
The gas evolved when dilute tetraoxosulphate (VI) acid reacts with sodium hydrogen trioxocarbonate (IV) is
Which of the following gases is colourless, odourless and soluble in potassium hydroxide solution?
9.60 g of a gas X occupies the same volume at 0.30 g of hydrogen under the same conditions. Calculate the molar mass of X [H = 1]
Which of the following increases as boiling water changes to steam?
What are the values of x and y in the following equation? \(^{234}_{90}\)Th → \(^y_x\)Pa + ß- particle
What is the shape of a molecule of CCI4?
A radioactive solid is best stored
Which of the following non-metals reacts most readily with metals?
Electrostatic force of attraction between sodium ion and halide ion is greatest in
Which of the following contains co-ordinate covalent bond?