Soft water: Water which produces sufficient amount of lather with solution readily is called soft water. Examples of soft water are distilled water, rain water, etc.

Match the following and identify the correct option. (a) CO g + H 2 g (i) Mg HCO 3 2 + Ca HCO 3 2 (b) Temporary hardness of water (ii) An electron deficient hydride (c) B 2 H 6 (iii) Synthesis gas (d) H 2 O 2 (iv) Non-planar structure

(a)-(iii); (b)-(i); (c)-(ii); (d)-(iv)

(a)-(iii); (b)-(ii); (c)-(i); (d)-(iv)

(a)-(iii); (b)-(iv); (c)-(ii); (d)-(i)

(a)-(i); (b)-(iii); (c)-(ii); (d)-(iv)

EASY

Earn 100

What is soft water?

Important Questions on Hydrogen

EASY

Chemistry>Inorganic Chemistry>Hydrogen>Hard and Soft Water

Treatment with lime can remove hardness of water caused by

MEDIUM

Chemistry>Inorganic Chemistry>Hydrogen>Hard and Soft Water

What is the hardness of a water sample

(

in terms of equivalents of

{CaCO}_{3})

containing

10^{- 3} M {CaSO}_{4}

(

Molar mass of

{CaSO}_{4} = 136 g {mol}^{- 1})

EASY

Chemistry>Inorganic Chemistry>Hydrogen>Hard and Soft Water

When soap is dissolved in hard water, its cleaning ability comes down. This is due to the formation of:

EASY

Chemistry>Inorganic Chemistry>Hydrogen>Hard and Soft Water

Calgon is used for water treatment. Which of the following statement is NOT true about Calgon?

MEDIUM

Chemistry>Inorganic Chemistry>Hydrogen>Hard and Soft Water

The hardness of a water sample containing

10^{- 3} M {M g S O}_{4}

expressed as

{C a C O}_{3}

equivalents (in

p p m

) is . (molar mass of

{M g S O}_{4}

120.37 g / m o l

)

EASY

Chemistry>Inorganic Chemistry>Hydrogen>Hard and Soft Water

Which of the following ions will cause hardness in water?

MEDIUM

Chemistry>Inorganic Chemistry>Hydrogen>Hard and Soft Water

Match the following and identify the correct option.

(a) $CO (g) + H_{2} (g)$	(i) $Mg {({HCO}_{3})}_{2} + Ca {({HCO}_{3})}_{2}$
(b) Temporary hardness of water	(ii) An electron deficient hydride
(c) $B_{2} H_{6}$	(iii) Synthesis gas
(d) $H_{2} O_{2}$	(iv) Non-planar structure