The supervision in concentration of one of the ions by adding other ion as common ion is called common ion effect.

It is due to delocalization of \(\pi\)-electrons in benzene it is highly stable.

Carbon dioxide can be obtained as a solid in the form of dry ice by allowing the liquified CO₂ to expand rapidly.
Unlike ordinary ice it does not melt and hence does not wet the surface on which it is kept. Thus it is called dry ice.

BaSO₄.

A tight whirlpool of wind formed in the stratosphere which surrounds Antarctica is called polar vortex.

Acids present in acid rain can react with marble (CaCO₃) and damage the monument.

A standard hydrogen electrode is called reversible electrode because it can react both as anode as well as cathode in an electrochemical cell

(i) s-Block elements: ns^1-2 where n = 2 - 7.
(ii) p-Block elements: ns² np^1-6 where n = 2 - 6.
(iii) d-Block elements: (n -1) d^1-10ns^O-2 where n = 4 - 7.
(iv) f-Block elements: (n - 2)f^0-14 (n - 1) d^0-1 ni where n = 6 - 7

Molar mass of water is 18 g/ mol.
Number of oxygen atoms is 18 g of water = 6.02 x 10²³

Kinetic energy is given as \({ E }_{ k }=\frac { 3 }{ 2 } nRT\)
\(n=\frac { 2 }{ 32 } =\frac { 1 }{ 16 } mol,\)
\( R=8.314 \ JK^{ -1 }mol^{ -1 },\)
\( T=273-23=250 \ K\)
\( { E }_{ k }=\frac { 3 }{ 2 } \times \frac { 1 }{ 16 } \times 8.314\times 250=194.86J\)

The roots 2,7,5,9 and 0 are referred as bi, sept, pent,enn and nil respectively. Therefore, their names and symbol are

5 feet 2 inch = 1.5748 m
[\(\because \) 1 feet = 12 inch, 1m = 39.37 inch]

In the given question 0.9g L^-1 means that 1000 mL solution contains 0.9 g of glugose
Number of moles = 0.9g glucose = \(\frac { 0.9 }{ 180 } \)mol glugose
= \(5\times { 10 }^{ -3 }\)mol glugose.
(where molecular mass of glugose(C₂H₁₂O₆) = \(12\times 6+12\times 1+6\times 16=180u)\)
i.e IL solution contains 0.05 mole glugose or the molarity of glucose is 0.005M.

(a) 91 x 10^-25
(b) 0.7 kg