Statement-1. The colour of old lead paintings can be restored by washing with a dilute solution of `H_(2)O_(2)`. Statement-2. Hydrogen peroxide oxidises black lead sulphide to white lead sulphate.A. Statement-1 is true, Statement-2 is True , Statement-2 is a correct explanation for statement-5B. Statement-1 is True, Statement-2 is True, Statement-2 is not a correct explanation for statement-5C. Statement-1 is True, Statement -2 is FalseD. Statement -1 is False , Statement-2 is True.

Statement-1. The colour of old lead paintings can be restored by washi

1.	Statement-1. The colour of old lead paintings can be restored by washing with a dilute solution of `H_(2)O_(2)`. Statement-2. Hydrogen peroxide oxidises black lead sulphide to white lead sulphate.A. Statement-1 is true, Statement-2 is True , Statement-2 is a correct explanation for statement-5B. Statement-1 is True, Statement-2 is True, Statement-2 is not a correct explanation for statement-5C. Statement-1 is True, Statement -2 is FalseD. Statement -1 is False , Statement-2 is True.
Answer» Correct Answer - A

Discussion

No Comment Found

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+)`

Discussion

No Comment Found

Related InterviewSolutions

Reply to Comment