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

00:00
Question # 1

Which is used to remove air bubbles form metals?

Question # 2

BiCl3on hydrolysis forms a white precipitate of

Question # 3

Heavy water is obtained by

Question # 4

Which colour is imparted by sodium

Question # 5

What is the formula of asbestos?

Question # 6

Sometimes a yellow turbidity appears while passing H2S gas even in the absence of II group radicals. This is because

Question # 7

On alkali and alkaline earth metals down the group, there is decreasing trend in

Question # 8

Boric acid cannot be used:

Question # 9

White phosphorus is

Question # 10

The structure of white phosphorus is

Question # 11

S-block elements consist of

Question # 12

Oleum is

Question # 13

Which electronic configuration corresponds to an element of Group ||Z-A of the periodic table?

Question # 14

Which one of the following pentafluorides cannot be formed?

Question # 15

Which of the following oxides is peroxide?

Question # 16

Sulphuric acid has great affinity for water because

Question # 17

Which of the following compound is industrially prepared by the electrolysis of solution of NaCl

Question # 18

Aluminium oxide is:

Question # 19

The maximum number of electrons in the outermost shall of s-black elements is

Question # 20

In the earth crust sodium is

Question # 21

The electrolytic cell used for the production of metallic sodium is known as

Question # 22

Dipole moment of CO molecule is:

Question # 23

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

Question # 24

Which of the following are electropositive in nature

Question # 25

Each of the following is true of white and red phosphours except that they

Question # 26

Basicity of orthoposphoric acid is

Question # 27

When SO2is passed through acidified K2Cr2O7solution

Question # 28

What is going to replace the petroleum?

Question # 29

Which of the following sulphates has the highest solubility in water

Question # 30

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

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ECAT Chemistry Chapter 14 Important MCQ's

Sr.# Question Answer
1 Sodium is never found free in nature because of its
A. Chemical reactivity
B. Small ionic size
C. Small atomic volume
D. None of these
2 The acid which has a peroxy linkage is
A. Sulphurous acid
B. Pyrosulphuric acid
C. Dithionic acid
D. Caro's acid
3 Where lime is not used
A. In refining or metals
B. In paper industry
C. In glass industry
D. In the preparation of NaOH
4 Potassium superoxide has a use in breathing equipment in space crafts. The balanced equation for the reaction is
5 Which one of the following is not an alkali metal
A. Francium
B. Caesium
C. Rubidium
D. Radium
6 The metal with highest electrical resistance at room temperature is
A. Pb
B. Te
C. Po
D. Fe
7 Density of aluminium is (g cm-3):
A. B
B. Al
C. Si
D. Ge
8 P2O5is heated with water to give
A. Hypophosphorus acid
B. Phosphorus acid
C. Hypophosphorus acid
D. Orthophosphorus acid
9 Each of the following is true of white and red phosphours except that they
A. Are both soluble in CS2
B. Can be oxidized by heating in air
C. Consist of the same kind of atoms
D. Can be converted into one another
10 Sodium should be stored in
A. Air free from moisture
B. Air free form carbon dioxide
C. Under water
D. Under kerosene oil

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