ECAT Pre Engineering Chemistry Chapter 14 MCQ Test With Answer

MCQ's Test For ECAT Chemistry Chapter 14 Group IIIA & IVA Elements

Try The MCQ's Test For ECAT Chemistry Chapter 14 Group IIIA & IVA Elements

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ECAT Chemistry Chapter 14 Group IIIA & IVA Elements

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Question # 1

The alkaline earth elements have in their s-orbital

Question # 2

The structure of white phosphorus is

Question # 3

Sulphuric acid has great affinity for water because

Question # 4

The oxyacids of phosphorus in which phosphorus has the lowest oxidiation state is

Question # 5

S-block elements consist of

Question # 6

The chemical formula of gypsum is

Question # 7

Which of the element is not alkali metal

Question # 8

Dipole moment of CO molecule is:

Question # 9

Which of the following statement is not related to Solvay's process of Na2CO3

Question # 10

Chile saltpetre has the chemical formula

Question # 11

Which of the following salt is used as purgative

Question # 12

Al is the most element in earth crust:

Question # 13

Lithium reacts with air to form

Question # 14

The chemical formula of magnesite is

Question # 15

When a colourless gas is passed through bromine water only decolourisation takes place the gas is

Question # 16

Basicity of orthoposphoric acid is

Question # 17

Chemical composition of colemnite is:

Question # 18

When SO2is passed through acidified K2Cr2O7solution

Question # 19

Lime, calcium oxide, is used in agriculture for

Question # 20

Aluminium oxide is:

Question # 21

Which of the following fluorides does not exists?

Question # 22

White P when boiled with strong solution of caustic soda produces

Question # 23

Alkaline earth metals are usually

Question # 24

What is going to replace the petroleum?

Question # 25

Carbonates of alkali metals dissolves freely in water to form

Question # 26

The formula of lime stone is

Question # 27

CaC2on hydrolysis form

Question # 28

Which of the following is lighter

Question # 29

Where lime is not used

Question # 30

What causes nitrogen to be chemically inert?

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ECAT Chemistry Chapter 14 Important MCQ's

Sr.# Question Answer
1 CaC2on hydrolysis form
A. CH4
B. C2H4
C. C2H2
D. C6H6
2 Dipole moment of CO molecule is:
A. 0.0
B. 1.112 D
C. 0.112 D
D. 2.112 D
3 Which colour is imparted by sodium
A. Yellow
B. Violet
C. Red
D. Crimson
4 Which oxide of nitrogen is obtained on heating ammonium nitrate at 250° C?
A. Nitric oxide
B. Nitrous oxide
C. Nitrogen dioxide
D. Dinitrogen tetraoxide
5 Which has soapy touch?
A. Na2B4O7
B. H3BO3
C. Ca2B6O11
D. HBO2
6 The number of unpaired electrons in the p-subshell of oxygen atom
A. 1
B. 2
C. 3
D. 4
7 ______ is called milk of magnesia
A. NaOH
B. KOH
C. LiOH
D. None
8 Group VA of the periodic table consists of the elements N, P, As, Sb and Bi, On passing from N to Bi, the oxides of the elements of general formula M2O3become
A. Stronger reducing agents
B. More ionic
C. More basic
D. More volatile
9 Which is not the form of silica?
A. Amethyst quatz
B. Rose quatz
C. Smoky
D. None of these
10 Alkali metals react violently with halogens to form
A. Hydrides
B. Halides
C. Anyhydrides
D. None of these

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