Hydrides of N...

Hydrides of Nitrogen

Trending Questions

Ammonia reacts with excess chlorine to form:

$N_{2} and {NH}_{4} Cl$
${NCl}_{3} and HCl$
$N_{2} and HCl$
${NH}_{4} Cl and {NCl}_{3}$

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How does the reducing character of hydrides of group 15 elements vary in the periodic table?

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Specify the co-ordination number of Calcium and Fluoride ion in the compound Calcium fluoride ${CaF}_{2}$

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Amongst the trihalides of nitrogen, which one is the least basic?

${NF}_{3}$
${NCl}_{3}$
${NBr}_{3}$
${NI}_{3}$

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Given below are two statements:

Statement 1: $0 - Nitrophenol$ is steam volatile due to intramolecular hydrogen bonding.

Statement 2: $0 - Nitrophenol$ has a high melting point due to hydrogen bonding.

In the light of the above statements, choose the most appropriate answer from the options given below:

Both statement 1 and statement 2 are false
Statement 1 is false but statement 2 is true
Both statement 1 and statement 2 are true
Statement 1 is true but statement 2 is false

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C r O_{5} + H_{2} S O_{4} \to C r_{2} (S O_{4})_{3} + H_{2} O + O_{2},

In the above reaction how many moles of

O_{2}

will be liberated from one mole of

C r O_{5}

$\frac{5}{2}$
$\frac{5}{4}$
$\frac{9}{2}$
$\frac{7}{4}$

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Ammonia reacts with excess Chlorine to form ……………… (Nitogen/Nitrogen trichloride/Ammonium chloride)

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Q. the correct order of acidic character is p4o10>p4o6 n2o5>n2o3 n2o3>p4o6 all of these

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Select the least basic compound among the following ?

${NI}_{3}$
${NBr}_{3}$
${NCl}_{3}$
${NF}_{3}$

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Q. Which is the correct sequence in the following properties? For the correct order mark(T) and for the incorrect order mark (F):
(a) Lewis acidity order :

S i F_{4} < S i C l_{4} < S i B r_{4} < S i I_{4}

(b) Melting point:

N H_{3} > S b H_{3} > A s H_{3} > P H_{3}

N H_{3} > S b H_{3} > A s H_{3} > P H_{3}

(d) Dipole moment order :

N H_{3} > S b H_{3} > A s H_{3} > P H_{3}

FTFT
TFTF
FFTT
FFTF

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Q. Which of the following has highest dipole moment?

$N H_{3}$
$P H_{3}$
$S b H_{3}$
$A s H_{3}$

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Q. Which of the following ammonium salts give(s) nitrogen on heating?

$(N H_{4})_{2} S O_{4}$
$N H_{4} N O_{2}$
$(N H_{4})_{2} (C O_{3})$
$(N H_{4})_{2} C r_{2} O_{7}$

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Q. The atomic number of Cu is

29

. The

E A N

(Effective Atomic Number) of

C u

{[C u {(N H_{3})}_{4}]}_{4}^{2 +}

is:

$35$
$36$
$49$
$40$

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Potassium metal is commercially prepared by the reduction of molten KCl with metallic sodium is $850^{0}$ C (1123K). This method is based upon the following principle

Sodium is more reactive than potassium at this temperature
Potassium being more volatile distils off thus shifting the reaction forward
Sodium prefers to bind to chloride ions in preference to potassium ions
Potassium and sodium form an alloy at this temperature.

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Q. In Nitrogen family the H-M-H angle in the hydrides

M H_{3}

gradually becomes closer to

90^{0}

on going from N to Sb. This shows that gradually:

The basic strength of the hydrides increases
Due to the increase in the size of central atom M and increase in its electronegativity
The bond energies of M-H increase
The bond pairs of electrons become closer to each other

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Give a reason for the following:

Dinitrogen is chemically inert.

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Q. Nitrobenzene can be prepared by heating with a mixture of concentrated

H N O_{3}

and concentrated

H_{2} S O_{4}

. In this nitrating mixture,

H N O_{3}

, acts as

A base
An acid
A catalys
A reducing agent

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Q. Choose the correct option .

CsH > KH > NaH < LiH (Order of stability)
X .................. H ___ X, X = O > F > N > S > Cl
(Order of strength of H-bonding)
$P H_{3} < A s H_{3} < N H_{3} < S b H_{3}$ (Order of boiling point )
$H_{2} O < N H_{3} < C H_{4}$ (Order of dipole moment)

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Q. A certain weak acid has

K_{a} = 1 \times 10^{- 4} . K_{e q}

for its reaction with NaOH is

$1 \times 10^{- 4}$
$1 \times 10^{- 14}$
$1 \times 10^{- 10}$
$1 \times 10^{- 10}$

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What would you observe in the following case:

Excess of chlorine gas is reacted with ammonia gas.

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Q. Correct order of decreasing thermal stability is as:

$N H_{3} > P H_{3} > A s H_{3} > S b H_{3}$
$P H_{3} > N H_{3} > A s H_{3} > S b H_{3}$
$S b H_{3} > A s H_{3} > P H_{3} > N H_{3}$
$A s H_{3} > P H_{3} > N H_{3} > S b H_{3}$

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Q. If 2g of carbon is burnt in the presence of 32g of oxygen. What is the amount of carbon dioxide formed?

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Q. Effective atomic number (EAN) of Fe in brown ring complex

[F e (H_{2} O)_{5} N O]^{2 +}

$36$
$37$
$38$
$39$

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Q. Amongst

N H_{3}, P H_{3}, A s H_{3}

and

S b H_{3}

, the one with highest boiling point is:

$A s H_{3}$ because of lower molecular weight
$S b H_{3}$ because of higher molecular weight
$N H_{3}$ because of H-bonding
$P H_{3}$ because of lower molecular weight

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Q. Given following series of reactions:
(I)

N H_{3} + O_{2} \to N O + H_{2} O

(II)

N O + O_{2} \to N O_{2}

(III)

N O_{2} + H_{2} O \to H N O_{3} + H N O_{2}

(IV)

N H O_{2} \to H N O_{3} + N O + H_{2} O

Select the correct option(s).

Moles of $H N O_{3}$ obtained is half of moles of Ammonia used if $H N O_{2}$ is not used to produce $H N O_{3}$ by reaction (IV)
$\frac{100}{6}$ % more $H N O_{3}$ will be produced if $H N O_{2}$ is used to produce $H N O_{3}$ by reaction (IV) than if $H N O_{2}$ is not used to produce $H N O_{3}$ by reaction (IV)
If $H N O_{2}$ is used to produce $H N O_{3}$ then $\frac{1}{4} t h$ of total $H N O_{3}$ is produced by reaction (IV)
Moles of $N O$ produced in reaction (IV) is $50$ % of moles of total $H N O_{3}$ produced

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How small size of atom helps to add electron?

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Q. Which is a stronger reducing agent,

S b H_{3}

B i H_{3}

, and why?

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Q. Assertion :Mixture of

C a C_{2}

and

C a_{3} P_{2}

placed in the container with holes is thrown into the sea, a luminous flame is produced called Holmes signal Reason: Both react with

H_{2} O

C a C_{2} + 2 H_{2} O

⟶

C a (O H)_{2}

C_{2} H_{2}

C a_{3} P_{2} + 6 H_{2} O ⟶ 3 C a (O H)_{2} + 2 P H_{3}

Some

P_{2} H_{4}

is also produced, which catches fire instantly, which in turn ignites

C_{2} H_{2}

(acetylene) and then luminous flame is produced. This guides the approaching ship. This signal is called Holme's signal.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
Assertion is correct but Reason is incorrect
Both Assertion and Reason are incorrect

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Q. Arrange the following in the increasing order of their basic character:

N H_{3}, P H_{3}, A S H_{3}, S b H_{3}, B i H_{3}

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The effective atomic number $(E A N)$ of $_{24} C r$ in $[C r (N H_{3})_{6}] C l_{3}$ is :

$24$
$27$
$30$
$33$

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