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

SO3 is not absorbed in water directly to or H2SO4 because

Question # 2

Bone ash contains calcium phosphate

Question # 3

Which is an inert gas?

Question # 4

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

Question # 5

Which is aqua regia?

Question # 6

Specific gravity of HNO3 is

Question # 7

Formation of NO from N2 and O2 requires temp

Question # 8

Which are metalloid?

Question # 9

The brown gas formed when metal reduces HNO3is

Question # 10

Group VI-A elements are called:

Question # 11

What are non-metals?

Question # 12

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

Question # 13

Nitrogen is present in atmosphere

Question # 14

All elements of group VI-A non-metal except

Question # 15

Colour of PCl5is:

Question # 16

Sulphuric acid is used

Question # 17

Calcium carbonate contains oxygen in it

Question # 18

Which has garlic like odour?

Question # 19

Which element belongs to group V-A?

Question # 20

Calcium carbonates contains oxygen in it:

Question # 21

Aqua Regia has ration of conc. HCl and HNO3.

Question # 22

Aqua Regia has ratio of conc. HCl and HNO3

Question # 23

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

Question # 24

Which is the most reactive?

Question # 25

Oxidation of NO in air produces

Question # 26

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

Question # 27

Ring testis given by ions.

Question # 28

Nitrogen is present in atmosphere by weight

Question # 29

Laughing gas is chemically

Question # 30

Tungsten and Uranium are turned to an reaction with HNO3:

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ECAT Chemistry Chapter 15 Important MCQ's

Sr.# Question Answer
1 Which of the following species has the maximum number of unpaired electrons?
A. O2
B. O2+
C. O2-
D. O2-2
2 Allotropic forms of oxygen Te, Se are
A. Two
B. Three
C. Four
D. Five
3 Nitrogen is present in atmosphere
A. 21%
B. 36%
C. 89%
D. 78%
4 Specific gravity of HNO3 is
A. 1.35
B. 1.53
C. 1.39
D. 1.93
5 Laughing gas is chemically
A. NO
B. N2O
C. NO2
D. N2O4
6 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
7 Which property is not present in non-methals
A. Predominantly covalent
B. Poor conductor
C. Hig E.N. value
D. High electropositivity
8 Aqua Regia has ratio of conc. HCl and HNO3
A. 1 : 2
B. 1 : 3
C. 1 : 4
D. 2 : 3
9 Ring testis given by ions.
A. Nitrides
B. Nitrates
C. Cyanates
D. Nitriles
10 Which is aqua regia?
A. HCL : NO
B. HCl : HNO3
C. HCl : H2SO4
D. H2SO4 : HNO3

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