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07. The p-BLOCK ELEMENTS (XII)

189319 Which gas is obtained when urea is heated with $H N O_{2}$

1

N_{2}

2

H_{2}

3

O_{2}

4

N H_{3}

Explanation:

(a) $N H_{2} - C O - N H_{2} + 2 H N O_{2} \to$ $C O_{2} + 3 H_{2} O + 2 N_{2}$

07. The p-BLOCK ELEMENTS (XII)

189382 The gases respectively absorbed by alkaline pyrogallol and oil of cinnamon is

1

O_{3,}

C H_{4}

2

O_{2},

O_{3}

3

S O_{2},

C H_{4}

4

N_{2} O,

O_{3}

07. The p-BLOCK ELEMENTS (XII)

189383 Ozone turns trimethyl paper

1 Green

2 Violet

3 Red

4 Black

07. The p-BLOCK ELEMENTS (XII)

189384 No. of atoms in one molecule of sulphur is

1

8

2

4

3

3

4 None of these

Explanation:

Sulphur molecules have $8$ atoms in it because of its high catenation property.
$S_{8} :$ Crown Sulphur

07. The p-BLOCK ELEMENTS (XII)

189319 Which gas is obtained when urea is heated with $H N O_{2}$

1

N_{2}

2

H_{2}

3

O_{2}

4

N H_{3}

Explanation:

(a) $N H_{2} - C O - N H_{2} + 2 H N O_{2} \to$ $C O_{2} + 3 H_{2} O + 2 N_{2}$

07. The p-BLOCK ELEMENTS (XII)

189382 The gases respectively absorbed by alkaline pyrogallol and oil of cinnamon is

1

O_{3,}

C H_{4}

2

O_{2},

O_{3}

3

S O_{2},

C H_{4}

4

N_{2} O,

O_{3}

07. The p-BLOCK ELEMENTS (XII)

189383 Ozone turns trimethyl paper

1 Green

2 Violet

3 Red

4 Black

07. The p-BLOCK ELEMENTS (XII)

189384 No. of atoms in one molecule of sulphur is

1

8

2

4

3

3

4 None of these

Explanation:

Sulphur molecules have $8$ atoms in it because of its high catenation property.
$S_{8} :$ Crown Sulphur

07. The p-BLOCK ELEMENTS (XII)

189319 Which gas is obtained when urea is heated with $H N O_{2}$

1

N_{2}

2

H_{2}

3

O_{2}

4

N H_{3}

Explanation:

(a) $N H_{2} - C O - N H_{2} + 2 H N O_{2} \to$ $C O_{2} + 3 H_{2} O + 2 N_{2}$

07. The p-BLOCK ELEMENTS (XII)

189382 The gases respectively absorbed by alkaline pyrogallol and oil of cinnamon is

1

O_{3,}

C H_{4}

2

O_{2},

O_{3}

3

S O_{2},

C H_{4}

4

N_{2} O,

O_{3}

07. The p-BLOCK ELEMENTS (XII)

189383 Ozone turns trimethyl paper

1 Green

2 Violet

3 Red

4 Black

07. The p-BLOCK ELEMENTS (XII)

189384 No. of atoms in one molecule of sulphur is

1

8

2

4

3

3

4 None of these

Explanation:

Sulphur molecules have $8$ atoms in it because of its high catenation property.
$S_{8} :$ Crown Sulphur

07. The p-BLOCK ELEMENTS (XII)

189319 Which gas is obtained when urea is heated with $H N O_{2}$

1

N_{2}

2

H_{2}

3

O_{2}

4

N H_{3}

Explanation:

(a) $N H_{2} - C O - N H_{2} + 2 H N O_{2} \to$ $C O_{2} + 3 H_{2} O + 2 N_{2}$

07. The p-BLOCK ELEMENTS (XII)

189382 The gases respectively absorbed by alkaline pyrogallol and oil of cinnamon is

1

O_{3,}

C H_{4}

2

O_{2},

O_{3}

3

S O_{2},

C H_{4}

4

N_{2} O,

O_{3}

07. The p-BLOCK ELEMENTS (XII)

189383 Ozone turns trimethyl paper

1 Green

2 Violet

3 Red

4 Black

07. The p-BLOCK ELEMENTS (XII)

189384 No. of atoms in one molecule of sulphur is

1

8

2

4

3

3

4 None of these

Explanation:

Sulphur molecules have $8$ atoms in it because of its high catenation property.
$S_{8} :$ Crown Sulphur

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