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

Copper oxide is dedected by borax bead test with colour:

Question # 2

Which of the following are electropositive in nature

Question # 3

Down's cell is used to prepare

Question # 4

Phosphide ion has the electronic structure similar to that of

Question # 5

In the earth crust sodium is

Question # 6

NaHCO3is commonly called

Question # 7

The metal with highest electrical resistance at room temperature is

Question # 8

Sodium hexametaphophate is known as

Question # 9

In a group IIA from top to bottom as the atomic number increases, there is regular decreases in

Question # 10

The acid which has a peroxy linkage is

Question # 11

Dipole moment of CO molecule is:

Question # 12

The alkaline earth elements have in their s-orbital

Question # 13

The chemical formula of magnesite is

Question # 14

Which metal is used in the thermit process because of its activity?

Question # 15

Heavy water is obtained by

Question # 16

Potassium superoxide has a use in breathing equipment in space crafts. The balanced equation for the reaction is

Question # 17

The chemical formula of Trona is

Question # 18

Which salt is used for the treatment of hyperacidity in stomach

Question # 19

Alkali metals react violently with halogens to form

Question # 20

Gypsum is applied to the soil to provide calcium and

Question # 21

Boric acid cannot be used:

Question # 22

The silver bromide in hypo (Na2S2O3) solution is

Question # 23

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

Question # 24

Basicity of orthoposphoric acid is

Question # 25

Which of the following has highest dipole moment?

Question # 26

What is going to replace the petroleum?

Question # 27

Which of the following compounds is explosive in nature?

Question # 28

Phosphorus pentoxide finds use as

Question # 29

Which element among the following belongs to Group IV-A of the periodic table?

Question # 30

Which element forms an iron with charge 3+?

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ECAT Chemistry Chapter 14 Important MCQ's

Sr.# Question Answer
1 Which colour is imparted by sodium
A. Yellow
B. Violet
C. Red
D. Crimson
2 The oxyacids of phosphorus in which phosphorus has the lowest oxidiation state is
A. Hypophosphorus acid
B. Orthophosphorus acid
C. Pyrophosphorus acid
D. Metaphosphorus acid
3 A compound used as eye wash:
A. Borax
B. Boric acid
C. Metabolic acid
D. Pyroboric acid
4 Marble is chemically
A. CaCl2
B. CaCO3
C. Na2CO3
D. NaHCO3
5 The oxide of beryllium is
A. Acidic
B. Amphoteric
C. Superoxide
D. Basic
6 Red P can be obtained form white P by
A. Heating it with a catalyst in an inert atmosphere
B. Distilling it in an inert atmosphere
C. Dissolving it in CS2and crysllizing
D. Melting it ad pouring the liquid into water
7 The most acidic of the following compounds is
A. P2O3
B. Sb2O3
C. B2O3
D. As2O3
8 P2O5is heated with water to give
A. Hypophosphorus acid
B. Phosphorus acid
C. Hypophosphorus acid
D. Orthophosphorus acid
9 Sometimes a yellow turbidity appears while passing H2S gas even in the absence of II group radicals. This is because
A. Sulphur is present in the mixture as impurity
B. IV group radicals are precipitated as sulphides
C. Of the oxidation of H2S gas by some acid radicals
D. III group radicals are precipitated as hydroxides
10 Sodium is manufacture by the electrolysis of fused sodium chloride and not from an aqueous solution of sodium chloride because
A. Sodium chloride does not ionize in the water solution
B. Sodium chloride is not soluble in water
C. Sodium deposited at the cathode may react with water to form sodium hydroxide
D. Electricity does not pass through aqueous NaCl

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