ECAT Pre Engineering Chemistry Chapter 15 MCQ Test With Answer

Question # 1

Which element of group IV-A does not use d-orbital?

N A
P B
As C
Sb D

Question # 2

SO₂is not absorbed in water directly to or H₂SO₄because:

The reaction does not go to completion A
the reaction is quite slow B
the reaction is exothemic C
SO₃is insolublein water D

Question # 3

Allotropic forms of sulpher are

Two A
Three B
Four C
Five D

Question # 4

Which is the most reactive?

White phosphorus A
Red Phosphorus B
Graphite C
Plastic sulphur D

Question # 5

Aqua Regia has ration of conc. HCl and HNO₃.

1 : 2 A
1 : 3 B
1 : 4 C
2 : 3 D

Question # 6

Allotropic forms of oxygen Te, Se are

Two A
Three B
Four C
Five D

Question # 7

Tungsten and uranium are turned to an reaction with HNO₃

Oxides A
Chlorides B
Nitrides C
Nitrates D

Question # 8

Posphorus belongs to a group

III-A A
IV-A B
V-A C
VI-A D

Question # 9

NO₂ forms acidic solution

Red A
Blue B
Green C
Brown D

Question # 10

Laughing gas is chemically

NO A
N_2O B
NO₂ C
N₂O₄ D

Question # 11

What are non-metals?

Sb & Bi A
P & Bi B
N & P C
As & N D

Question # 12

Which has sweetish taste?

N₂O A
NH₃ B
Cl₂ C
CO₂ D

Question # 13

Which is an inert gas?

Nitrogen A
Oxygen B
Hydrogen C
CO D

Question # 14

Which is nitrous acid?

HNO₃ A
HNO B
HNO₂ C
H₂NO₃ D

Question # 15

Structure of P₄ is

Trigonal A
Tetragonal B
Hexagonal C
Monoclinic D

Question # 16

Out of all the elements of group V-A , the highest ionization energy is possessed by:

N A
P B
Sb C
Bi D

Question # 17

Which is laughing gas?

NO A
N₂O B
NO₂ C
NO₃ D

Question # 18

Which property is not present in non-methals

Predominantly covalent A
Poor conductor B
Hig E.N. value C
High electropositivity D

Question # 19

Among group V-A elements, the most electronegative element is

Sb A
N B
P C
As D

Question # 20

Which has garlic like odour?

N₂O A
NO B
NO₂ C
NH₄ D

Question # 21

Which of the following species has the maximum number of unpaired electrons?

O₂ A
O₂⁺ B
O₂^- C
O₂^-2 D

Question # 22

Nitrogen is present in atmosphere

36% A
78% B
89% C
21% D

Question # 23

Which are metalloid?

Nitrogen and phosphorous A
Arsenic and phosphorous antimony B
Phosphorous and arsenic C
Antimony and bismuth D

Question # 24

Which element of group IV-A does not use d — orbital?

N A
P B
As C
Sb D

Question # 25

Nitrogen is present in atmosphere by weight:

75% A
76% B
77% C
78% D

Question # 26

Which property is not present in non-metals:

Predominantly covalent A
Poor conductor B
High E.N. Value C
High electropositivity D

Question # 27

Sulphuric acid is used

As fertilizers A
As dehydrating agent B
As oxidizing agent C
All above D

Question # 28

Oxidation of NO in air produces

N₂O A
N₂O₃ B
N₂O₄ C
N₂O₅ D

Question # 29

Formation of NO from N₂ and O₂ requires temp

30⁰C A
300⁰C B
3000⁰C C
30000⁰C D

Question # 30

Tungsten and Uranium are turned to an reaction with HNO₃:

Oxides A
chlorides B
Nitrides C
Nitrates D

Sr.#	Question	Answer
1	Which has garlic like odour?	A. N₂O B. NO C. NO₂ D. NH₄
2	Structure of P₄ is	A. Trigonal B. Tetragonal C. Hexagonal D. Monoclinic
3	Which element of group IV-A does not use d-orbital?	A. N B. P C. As D. Sb
4	Which phosphorus is the most poisonous?	A. White B. Red C. Black D. All
5	SO₂is not absorbed in water directly to or H₂SO₄because:	A. The reaction does not go to completion B. the reaction is quite slow C. the reaction is exothemic D. SO₃is insolublein water
6	Which is laughing gas?	A. NO B. N₂O C. NO₂ D. NO₃
7	Sulphuric acid is used	A. As fertilizers B. As dehydrating agent C. As oxidizing agent D. All above
8	Formation of NO from N₂ and O₂ requires temp	A. 30⁰C B. 300⁰C C. 3000⁰C D. 30000⁰C
9	Which of the following species has the maximum number of unpaired electrons?	A. O₂ B. O₂⁺ C. O₂^- D. O₂^-2
10	Out of all the elements of group V-A, the highest ionization energy is possessed by	A. N B. P C. Sb D. Bi

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ECAT Pre Engineering Chemistry Chapter 15 MCQ Test With Answer

MCQ's Test For ECAT Chemistry Chapter 15 Group IV-A and VI-A Elements

ECAT Chemistry Chapter 15 Group IV-A and VI-A Elements

Which element of group IV-A does not use d-orbital?

SO2is not absorbed in water directly to or H2SO4because:

Allotropic forms of sulpher are

Which is the most reactive?

Aqua Regia has ration of conc. HCl and HNO3.

Allotropic forms of oxygen Te, Se are

Tungsten and uranium are turned to an reaction with HNO3

Posphorus belongs to a group

NO2 forms acidic solution

Laughing gas is chemically

What are non-metals?

Which has sweetish taste?

Which is an inert gas?

Which is nitrous acid?

Structure of P4 is

Out of all the elements of group V-A , the highest ionization energy is possessed by:

Which is laughing gas?

Which property is not present in non-methals

Among group V-A elements, the most electronegative element is

Which has garlic like odour?

Which of the following species has the maximum number of unpaired electrons?

Nitrogen is present in atmosphere

Which are metalloid?

Which element of group IV-A does not use d — orbital?

Nitrogen is present in atmosphere by weight:

Which property is not present in non-metals:

Sulphuric acid is used

Oxidation of NO in air produces

Formation of NO from N2 and O2 requires temp

Tungsten and Uranium are turned to an reaction with HNO3:

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