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

All the elements of oxygen family are

Question # 2

Which one of the following properties is not correct for ozone?

Question # 3

Silicon atom is hybridized:

Question # 4

Which of the following are electropositive in nature

Question # 5

The formula of lime stone is

Question # 6

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

Question # 7

The metal with highest electrical resistance at room temperature is

Question # 8

Which element has highest oxidation potential

Question # 9

Which of the following fluorides does not exists?

Question # 10

S-block elements consist of

Question # 11

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

Question # 12

Which of the following is a tetrabasic acid?

Question # 13

Chile saltpetre has the chemical formula

Question # 14

Carbonates of alkali metals dissolves freely in water to form

Question # 15

The element which has a simple cubic lattice in solid state is

Question # 16

Which of the following salt is used as purgative

Question # 17

Which salt is used for preserving food

Question # 18

What is chrome yellow?

Question # 19

Which of the following sulphates is not soluble in water

Question # 20

Basicity of orthoposphoric acid is

Question # 21

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

Question # 22

BiCl3on hydrolysis forms a white precipitate of

Question # 23

All the following decompose easily on heating to give oxygen except

Question # 24

The oxidation number of each element of group ll-A is

Question # 25

The acid used in lead storage cells is

Question # 26

Electron affinity of sulphur is

Question # 27

Which of the following elements is most metallic?

Question # 28

White P when boiled with strong solution of caustic soda produces

Question # 29

Phosphide ion has the electronic structure similar to that of

Question # 30

Ozone is not

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ECAT Chemistry Chapter 14 Important MCQ's

Sr.# Question Answer
1 Plaster of pares is obtained by heating
A. Gypsum
B. Epsom
C. Lime stone
D. Dolomite
2 Which metal is used in the thermit process because of its activity?
A. Iron
B. Copper
C. Alumnium
D. Zinc
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 ______ reacts with alkalis to give hydrogen
A. Be
B. Mg
C. Ca
D. None
5 Which one of the following elements occurs free in nature?
A. N
B. P
C. As
D. Sb
6 Oleum is
A. Castor oil
B. Oil of vitriol
C. Fuming of H2SO4
D. None of them
7 Borax is hydrated:
A. Penta
B. Deca
C. Hepta
D. Octa
8 When ammonia is heated with cupric oxide, a molecule of ammonia will
A. Gain 3 electrons
B. Lose 3 electrons
C. Gain 2 electrons
D. Lose 2 electrons
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 P2O5is heated with water to give
A. Hypophosphorus acid
B. Phosphorus acid
C. Hypophosphorus acid
D. Orthophosphorus acid

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