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Correct order of boiling point is :-

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Important Questions on Hydrogen

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Chemistry>Inorganic Chemistry>Hydrogen>Properties of Hydrogen

298.2 K

the relationship between enthalpy of bond dissociation (in

kJ {mol}^{- 1}

) for hydrogen

(E_{H})

and its isotope, deuterium

(E_{D})

, is best described by:

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Chemistry>Inorganic Chemistry>Hydrogen>Properties of Hydrogen

Out of the oxides given below which of them cannot be reduced by $H_{2}$ ?

$I - {Al}_{2} O_{3}; II - CuO; III - ZnO$

EASY

Chemistry>Inorganic Chemistry>Hydrogen>Properties of Hydrogen

Which of the following properties of hydrogen is similar to halogen family?

EASY

Chemistry>Inorganic Chemistry>Hydrogen>Properties of Hydrogen

Which one of the following statements is incorrect ?

EASY

Chemistry>Inorganic Chemistry>Hydrogen>Properties of Hydrogen

Which physical property of di-hydrogen is wrong?

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Chemistry>Inorganic Chemistry>Hydrogen>Properties of Hydrogen

Which of the following halides has maximum melting point ?

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Chemistry>Inorganic Chemistry>Hydrogen>Properties of Hydrogen

The period that contains only gaseous elements is

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Chemistry>Inorganic Chemistry>Hydrogen>Properties of Hydrogen

The compounds formed by the reaction of metals with hydrogen are called

EASY

Chemistry>Inorganic Chemistry>Hydrogen>Properties of Hydrogen

The gas used in hydrogenation of oils is

EASY

Chemistry>Inorganic Chemistry>Hydrogen>Properties of Hydrogen

In which of the following reactions does hydrogen act as an oxidising agent?

HARD

Chemistry>Inorganic Chemistry>Hydrogen>Properties of Hydrogen

Concentrated hydrochloric acid when kept in open air sometimes produces a cloud of white fumes.The explanation for it is that

EASY

Chemistry>Inorganic Chemistry>Hydrogen>Properties of Hydrogen

Ortho & para

hydrogen differ in:

EASY

Chemistry>Inorganic Chemistry>Hydrogen>Properties of Hydrogen

Which is the poorest reducing agent?

EASY

Chemistry>Inorganic Chemistry>Hydrogen>Properties of Hydrogen

Energy required to dissociate 4 gms of

H_{2} (g)

into free atoms is 208 K.cals at

25^{o} C

. The H - H bond energy will be

HARD

Chemistry>Inorganic Chemistry>Hydrogen>Properties of Hydrogen

Vegetable oils are converted to vegetable ghee by the process of:

HARD

Chemistry>Inorganic Chemistry>Hydrogen>Properties of Hydrogen

Which of the following statements is true?

EASY

Chemistry>Inorganic Chemistry>Hydrogen>Properties of Hydrogen

Hydrogen does not combine with

MEDIUM

Chemistry>Inorganic Chemistry>Hydrogen>Properties of Hydrogen

Calculate the enthalpy change, when

50 mL

0.01 M Ca {(OH)}_{2}

reacts with

25 mL

0.01 M HCl

. Given that,

Δ H^{o}

neutralization of a strong acid and a strong base is

140 k c a l m o l^{- 1}

EASY

Chemistry>Inorganic Chemistry>Hydrogen>Properties of Hydrogen

The first ionization potential of

N a, M g, A l

and

S i

are in the order :

HARD

Chemistry>Inorganic Chemistry>Hydrogen>Properties of Hydrogen

If the bond dissociation energies of

XY, X_{2}

and

Y_{2}

(all diatomic molecules) are in the ratio of

1 : 1 : 0.5

and

Δ H_{f}

for the formation of

XY

- 200 kJ {mol}^{- 1}

. The bond dissociation energy of

X_{2}

will be

Correct order of boiling point is :-

Important Questions on Hydrogen

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