The vapour pressure will be lowest for :

• 0.1 M sugar solution

• 0.1 M KCl solution

• 0.1 M Cu(NO₃)₂ solution

• 0.1 M AgNO₃ solution

What is the name of element with atomic number 105 ?

• Kurchatovium

• Dubnium

• Nobelium

• Holmium

Which of the following oxide does not form acidic aqueous solution ?

• N₂O₃

• NO₂

• N₂O₅

• NO

Blood cells will remain as such in :

• hypertonic solution

• hypotonic solution

• isotonic solution

• none of the above

When Cu reacts with AgNO₃ solution , the reaction takes place is :

• Oxidation of Cu

• Reduction of Cu

• Oxidation of Ag

• Reduction of NO₃^-

Fluorine is the best oxidising agent because it has :

• highest electron affinity

• highest E^o_red

• highest E^o_oxid

• lowest electron effinity

Bleaching action of SO₂ is due to its :

• oxidising property

• acidic property

• basic property

• reducing property

48.

When I₂ is passed through KCl , KF and KBr solutions :

• Cl₂ and Br₂ are evolved

• Cl₂ is evolved

• Cl₂ , Br₂ and F₂ are evolved

• none of the above

Which of the following dissolves in hot conc. NaOH solution ?

• Fe

• Zn

• Cn

• Ag

Ionic mobility of Ag⁺ is ($\mathrm{\lambda }$_Ag⁺ = 5 x 10^-1 ohm^-1 cm² eq^-1) :

• 5.2 x 10^-9

• 2.4 x 10^-9

• 1.52 x 10^-9

• 8.25 x 10^-9