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

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

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

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Question # 1

Oxidation of NO in air produces

Question # 2

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

Question # 3

All elements of group VI-A non-metal except

Question # 4

Colour of N2O4 is

Question # 5

Which is the most reactive?

Question # 6

Nitrogen is present in atmosphere

Question # 7

What are non-metals?

Question # 8

The most stable phosphorus allotrope is

Question # 9

Tungsten and Uranium are turned to an reaction with HNO3:

Question # 10

Group VI-A elements are called:

Question # 11

Calcium carbonate contains oxygen in it

Question # 12

Ring testis given by ions.

Question # 13

Structure of P4 is

Question # 14

Allotropic forms of oxygen Te, Se are

Question # 15

Aqua Regia has ration of conc. HCl and HNO3.

Question # 16

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

Question # 17

The brown gas formed when metal reduces HNO3is

Question # 18

Formation of NO from N2 and O2 requires temp

Question # 19

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

Question # 20

Which element belongs to group V-A?

Question # 21

Nitrogen is present in atmosphere

Question # 22

Nitrogen is present in atmosphere by weight:

Question # 23

Specific gravity of HNO3 is

Question # 24

SO3 is not absorbed in water directly to or H2SO4 because

Question # 25

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

Question # 26

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

Question # 27

Which are metalloid?

Question # 28

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

Question # 29

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

Question # 30

Nitrogen is present in atmosphere by weight

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ECAT Chemistry Chapter 15 Important MCQ's

Sr.# Question Answer
1 Among group V-A elements, the most electronegative element is
A. Sb
B. N
C. P
D. As
2 SO3 is not absorbed in water directly to or H2SO4 because
A. the reaction does not go to completion.
B. the reaction is quite slow.
C. the reaction is exothermic.
D. SO3 is insoluble in water.
3 Aqua Regia has ratio of conc. HCl and HNO3
A. 1 : 2
B. 1 : 3
C. 1 : 4
D. 2 : 3
4 Allotropic forms of sulpher are
A. Two
B. Three
C. Four
D. Five
5 Allotropic forms of oxygen Te, Se are
A. Two
B. Three
C. Four
D. Five
6 Out of all the elements of group VI-A the highest melting and boiling points is shown by the elements:
A. Te
B. Se
C. S
D. Pb
7 Which is nitrous acid?
A. HNO3
B. HNO
C. HNO2
D. H2NO3
8 Tungsten and Uranium are turned to an reaction with HNO3:
A. Oxides
B. chlorides
C. Nitrides
D. Nitrates
9 Reaction of HNO, with very dilute Zinc and at low temperature gives
A. H2
B. NO
C. NO2
D. NH4
10 Which of the following species has the maximum number of unpaired electrons?
A. O2
B. O2+
C. O2-
D. O2-2

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