To a 25 ml H 2 O 2 solution excess acidified solution of Kl was added. The iodine liberated 20 ml of 0 . 3 N sodium this sulphate solution. Use these data to choose the correct statements from the following :

The volume strength of H 2 O 2 is 1 . 344 L

The weight of H 2 O 2 present in 1 L of the solution is 0 . 816 g

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A $100 ml$ mixture of $CO$ and ${CO}_{2}$ is passed through a tube containing red hot charcoal. The volume becomes $160 ml$ . The volumes are measured under the same conditions of temperature and pressure. Amongst the following, select the correct statement(s).

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Important Questions on Some Basic Concepts of Chemistry

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Alpha Question Bank for Engineering: Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>Exercise-2>Q 53

For equilibrium

N_{2} O_{4} (g) ⇌ 2 {NO}_{2} (g)

the observed vapour density of

N_{2} O_{4}

40

350 K

. Calculate percentage dissociation of

N_{2} O_{4} (g)

350 K

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Alpha Question Bank for Engineering: Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>Exercise-2>Q 55

Oxalic acid $H_{2} C_{2} O_{4},$ reacts with permanganate ion according to the balanced equation
$5 H_{2} C_{2} O_{4} (aq) + 2 {MnO}_{4}^{-} (aq) + 6 H^{+} (aq) \Leftrightarrow 2 {Mn}^{2 +} (aq) + 10 {CO}_{2} (g) + 8 H_{2} O (l) .$

The volume in $mL$ of $0.0162 M {KMnO}_{4}$ solution required to react with $25.0 mL$ of $0.022 M H_{2} C_{2} O_{4}$ solution is

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Alpha Question Bank for Engineering: Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>Exercise-2>Q 56

A certain weight of pure

{CaCO}_{3}

is made to react completely with

20 mL

of a

HCl

solution to give

224

mL

{CO}_{2}

gas at

STP .

The normality of the

HCl

solution is:

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Alpha Question Bank for Engineering: Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>Exercise-2>Q 57

What volume of

0.05 MCa {(OH)}_{2}

solution is needed for complete conversion of

10 mL

0.1 {MH}_{3} {PO}_{4}

into

Ca {(H_{2} {PO}_{4})}_{2} ?

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Alpha Question Bank for Engineering: Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>Exercise-2>Q 58

To a

25 ml H_{2} O_{2}

solution excess acidified solution of

Kl

was added. The iodine liberated

20 ml

0.3 N

sodium this sulphate solution. Use these data to choose the correct statements from the following :

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Alpha Question Bank for Engineering: Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>Exercise-2>Q 59

There are two sample of

HCl

having molarity

1 N

and

0.25 N .

Find volume of these sample taken in order to prepare

0.75 N HCl

solution. (Assume no water is used)

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Alpha Question Bank for Engineering: Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>Exercise-3>Q 3

Dissolving

120 g

of urea in

1000 g

of water gave a solution of density

1.15 g / mL .

The molarity of the solution is:

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Alpha Question Bank for Engineering: Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>Exercise-3>Q 4

29.2 % (w / w) HCl

stock solution has a density of

1.25 g {mL}^{- 1}

. The molecular weight of

HCl

36.5 g {mol}^{- 1}

. What is the volume

(mL)

solution of

200 mL

solution of

0.4 M HCl

A 100ml mixture of CO and CO2 is passed through a tube containing red hot charcoal. The volume becomes 160ml. The volumes are measured under the same conditions of temperature and pressure. Amongst the following, select the correct statement(s).

Important Questions on Some Basic Concepts of Chemistry

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A $100 ml$ mixture of $CO$ and ${CO}_{2}$ is passed through a tube containing red hot charcoal. The volume becomes $160 ml$ . The volumes are measured under the same conditions of temperature and pressure. Amongst the following, select the correct statement(s).