Related InterviewSolutions

• When temporary hard water containing `Mg(HCO_(3))_(2)` is boiled, the ppt. formed is ofA. `MgCO_(3)`B. `MgO`C. `Mg(OH)_(2)`D. None of these
• Water is said to be permanently hard when it contains `:`A. Chloride and sulphates of `Mg` and `Ca`B. Bicarbonates of `Na` and `K`.C. Carbonates of `Na` and `K`D. Phosphate of `Na` and `K.`
• Hydrogen gas is not liberated when the following metal is added to dil. `HCl :`A. `Mg`B. `Sn`C. `Ag`D. `Zn`
• When zeolite, which is hydrated sodium aluminium silicate, is treated with hard water, the sodium ions are are exchanged withA. `H^(+) ion`B. `Ca^(2+) ion`C. `SO_(4)^(2-) ion`D. `HO^(-) ion`
• When zeolite, which is hydrated sodium aluminium silicate is treated with hard water, the sodium ions `(Na^(o+))` are exchanged withA. `OH^(-)` ionsB. `SO_(4)^(2-)`ionsC. `Ca^(2+)` ionsD. `H^(+)` ions
• When zeolite, which is hydrated sodium aluminate silicate, is treated with hard water, the sodium ions are exchanged with:A. `Cl^(ɵ)`B. `SO_(4)^(ɵ)`C. `Ca^(2+)`D. `Mg^(2+)`
• When zeolite, which is hydrated sodium aluminium silicate is treated with hard water, the sodium ions `(Na^(o+))` are exchanged withA. `H^(o+)` ionsB. `Ca^(2+)` ionsC. `SO_(4)^(2-)` ionsD. `overset(Theta)(O)H` ions
• When zeolite, which is hydrated sodium aluminium silicate, is treated with hard water, the sodium ions are exchanged withA. `H^(+)`B. `Ca^(+2)`C. `OH`D. `SO_(4)^(2-)`
• One mole of calciium phosphide on reaction with excess water givesA. One mole of phospheneB. Two moles of phospheneC. Two moles of phospheneD. One mole of phosphene pentoxide
• When zeolite, which is hydrated sodium aluminate silicate, is treated with hard water, the sodium ions are exchanged with:A. `H^(+)`ionsB. `Ca^(2+)` ionsC. `Mg^(2+)` ionsD. Both `Ca^(2+)` and `Mg^(2+)`