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

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

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Question # 1

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

Question # 2

Group VI-A elements are called:

Question # 3

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

Question # 4

Which property is not present in non-metals:

Question # 5

Formation of NO from N2 and O2 requires temp

Question # 6

Allotropic forms of phosphorus are

Question # 7

Aqua Regia has ratio of conc. HCl and HNO3

Question # 8

Posphorus belongs to a group

Question # 9

SO2is not absorbed in water directly to or H2SO4because:

Question # 10

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

Question # 11

Colour of PCl5is:

Question # 12

The most stable phosphorus allotrope is

Question # 13

Specific gravity of HNO3 is

Question # 14

NO2forms acidic solution:

Question # 15

The brown gas formed when metal reduces HNO3is

Question # 16

Calcium carbonate contains oxygen in it

Question # 17

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

Question # 18

Which has garlic like odour?

Question # 19

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

Question # 20

Nitrogen is present in atmosphere by weight

Question # 21

Which has sweetish taste?

Question # 22

Structure of P4 is

Question # 23

Calcium carbonates contains oxygen in it:

Question # 24

Allotropic forms of sulpher are

Question # 25

Nitrogen is present in atmosphere by weight:

Question # 26

Which is aqua regia?

Question # 27

Tungsten and Uranium are turned to an reaction with HNO3:

Question # 28

What are non-metals?

Question # 29

SO3 is not absorbed in water directly to or H2SO4 because

Question # 30

Which element belongs to group V-A?

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Sr. # Question Answer
1 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.

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

A. Sb

B. N

C.P

D. As

3 Reaction of HNO, with very dilute Zinc and at low temperature gives

A. H2

B. NO

C.NO2

D. NH4

4 What are non-metals?

A. Sb & Bi

B. P & Bi

C.N & P

D. As & N

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

A. N

B. P

C.Sb

D. Bi

6 Nitrogen is present in atmosphere

A. 21%

B. 36%

C.89%

D. 78%

7 Which property is not present in non-methals

A. Predominantly covalent

B. Poor conductor

C.Hig E.N. value

D. High electropositivity

8 Which phosphorus is the most poisonous?

A. White

B. Red

C.Black

D. All

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

A. Sb

B. N

C.P

D. As

10 Which is an inert gas?

A. Nitrogen

B. Oxygen

C.Hydrogen

D. CO

11 Allotropic forms of oxygen Te, Se are

A. Two

B. Three

C.Four

D. Five

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

A. N

B. P

C.Sb

D. Bi

13 Which has garlic like odour?

A. N2O

B. NO

C.NO2

D. NH4

14 Aqua Regia has ratio of conc. HCl and HNO3

A. 1 : 2

B. 1 : 3

C.1 : 4

D. 2 : 3

15 Tungsten and Uranium are turned to an reaction with HNO3:

A. Oxides

B. chlorides

C.Nitrides

D. Nitrates

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

A. Te

B. Se

C.S

D. Pb

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

A. N

B. P

C.As

D. Sb

18 Aqua Regia has ration of conc. HCl and HNO3.

A. 1 : 2

B. 1 : 3

C.1 : 4

D. 2 : 3

19 Nitrogen is present in atmosphere

A. 36%

B. 78%

C.89%

D. 21%

20 Oxidation of NO in air produces

A. N2O

B. N2O3

C.N2O4

D. N2O5

21 Group VI-A elements are called:

A. Halogens

B. Electron deficient

C.alkaline earth metal

D. Chalcogens

22 Which is laughing gas?

A. NO

B. N2O

C.NO2

D. NO3

23 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

24 Which are metalloid?

A. Nitrogen and phosphorous

B. Arsenic and phosphorous antimony

C.Phosphorous and arsenic

D. Antimony and bismuth

25 Which is aqua regia?

A. HCL : NO

B. HCl : HNO3

C.HCl : H2SO4

D. H2SO4 : HNO3

26 Structure of P4 is

A. Trigonal

B. Tetragonal

C.Hexagonal

D. Monoclinic

27 Which gas is heavier than air?

A. CO2

B. NH3

C.Cl2

D. CO2

28 Calcium carbonate contains oxygen in it

A. 48%

B. 50%

C.53%

D. 60%

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