ECAT Pre Engineering Chemistry Chapter 15 MCQ Test With Answer

Question # 1

Ring testis given by ions.

Nitrides A
Nitrates B
Cyanates C
Nitriles D

Question # 2

Which has sweetish taste?

N₂O A
NH₃ B
Cl₂ C
CO₂ D

Question # 3

Which is the most reactive?

White phosphorus A
Red Phosphorus B
Graphite C
Plastic sulphur D

Question # 4

Which catalyst is used in contact process?

Fe₂O₃ A
V₂O₅ B
SO₃ C
Ag₂O D

Question # 5

The brown gas formed when metal reduces HNO₃is

N₂O₅ A
N₂O₃ B
NO₂ C
NO D

Question # 6

Calcium carbonate contains oxygen in it

48% A
50% B
53% C
60% D

Question # 7

What are non-metals?

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

Question # 8

Colour of PCl₅is:

Red A
Yellowish White B
Grey C
Colourless D

Question # 9

Nitrogen is present in atmosphere

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

Question # 10

Tungsten and Uranium are turned to an reaction with HNO₃:

Oxides A
chlorides B
Nitrides C
Nitrates D

Question # 11

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

N A
P B
As C
Sb D

Question # 12

Posphorus belongs to a group

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

Question # 13

Allotropic forms of phosphorus are

three A
four B
five C
six D

Question # 14

All elements of group VI-A non-metal except

Te A
S B
Se C
Po D

Question # 15

Formation of NO from N₂ and O₂ requires temp

30⁰C A
300⁰C B
3000⁰C C
30000⁰C D

Question # 16

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

O₂ A
O₂⁺ B
O₂^- C
O₂^-2 D

Question # 17

Which element belongs to group V-A?

Cs A
Ba B
Sr C
Bi D

Question # 18

SO₃ is not absorbed in water directly to or H₂SO₄ because

the reaction does not go to completion. A
the reaction is quite slow. B
the reaction is exothermic. C
SO₃ is insoluble in water. D

Question # 19

NO₂forms acidic solution:

Red A
Blue B
Green C
Brown D

Question # 20

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

N A
P B
As C
Sb D

Question # 21

Nitrogen is present in atmosphere by weight:

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

Question # 22

Group VI-A elements are called:

Halogens A
Electron deficient B
alkaline earth metal C
Chalcogens D

Question # 23

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

Sb A
N B
P C
As D

Question # 24

The most stable phosphorus allotrope is

White A
Red B
Black C
All D

Question # 25

Calcium carbonates contains oxygen in it:

48% A
50% B
53% C
60% D

Question # 26

Which gas is heavier than air?

CO₂ A
NH₃ B
Cl₂ C
CO₂ D

Question # 27

Which is an inert gas?

Nitrogen A
Oxygen B
Hydrogen C
CO D

Question # 28

Colour of N₂O₄ is

Raddish brown A
Yellow B
Colouries C
green D

Question # 29

Out of all the elements of group V1-A the highest melting and boiling points is shown by the element

Te A
Se B
S C
Pb D

Question # 30

Oxidation of NO in air produces

N₂O A
N₂O₃ B
N₂O₄ C
N₂O₅ D

Sr.#	Question	Answer
1	Tungsten and uranium are turned to an reaction with HNO₃	A. Oxides B. Chlorides C. Nitrides D. Nitrates
2	Nitrogen is present in atmosphere	A. 21% B. 36% C. 89% D. 78%
3	Among group V-A elements, the most electronegative element is:	A. Sb B. N C. P D. As
4	Tungsten and Uranium are turned to an reaction with HNO₃:	A. Oxides B. chlorides C. Nitrides D. Nitrates
5	Nitrogen is present in atmosphere by weight:	A. 75% B. 76% C. 77% D. 78%
6	Which is the most reactive?	A. White phosphorus B. Red Phosphorus C. Graphite D. Plastic sulphur
7	Formation of NO from N₂ and O₂ requires temp	A. 30⁰C B. 300⁰C C. 3000⁰C D. 30000⁰C
8	The brown gas formed when metal reduces HNO₃is	A. N₂O₅ B. N₂O₃ C. NO₂ D. NO
9	Which element belongs to group V-A?	A. Cs B. Ba C. Sr D. Bi
10	Which phosphorus is the most poisonous?	A. White B. Red C. Black D. All

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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

Ring testis given by ions.

Which has sweetish taste?

Which is the most reactive?

Which catalyst is used in contact process?

The brown gas formed when metal reduces HNO3is

Calcium carbonate contains oxygen in it

What are non-metals?

Colour of PCl5is:

Nitrogen is present in atmosphere

Tungsten and Uranium are turned to an reaction with HNO3:

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

Posphorus belongs to a group

Allotropic forms of phosphorus are

All elements of group VI-A non-metal except

Formation of NO from N2 and O2 requires temp

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

Which element belongs to group V-A?

SO3 is not absorbed in water directly to or H2SO4 because

NO2forms acidic solution:

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

Nitrogen is present in atmosphere by weight:

Group VI-A elements are called:

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

The most stable phosphorus allotrope is

Calcium carbonates contains oxygen in it:

Which gas is heavier than air?

Which is an inert gas?

Colour of N2O4 is

Out of all the elements of group V1-A the highest melting and boiling points is shown by the element

Oxidation of NO in air produces

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