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

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

Question # 2

A compound used as eye wash:

Question # 3

Chemical composition of colemnite is:

Question # 4

Lithium reacts with air to form

Question # 5

HNO2acts as an/a

Question # 6

The acid which has a peroxy linkage is

Question # 7

Which of the following sulphates is not soluble in water

Question # 8

When ammonia is heated with cupric oxide, a molecule of ammonia will

Question # 9

The chemical formula of magnesite is

Question # 10

______ gives peroxide

Question # 11

Pb has inert pair of electrons:

Question # 12

Which of the following salt is soluble in water

Question # 13

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

Question # 14

Hybridized in oxygen is:

Question # 15

All the following decompose easily on heating to give oxygen except

Question # 16

Commercial common salt becomes slight damp on storing because

Question # 17

Chief ore of aluminium is:

Question # 18

The oxide of beryllium is

Question # 19

Which of the following oxides is peroxide?

Question # 20

Lime, calcium oxide, is used in agriculture for

Question # 21

Which of the element is not alkali metal

Question # 22

Francium is an element at the bottom of Group I in the Periodic Table. Which one of the following predication is likely to be correct?

Question # 23

The number of unpaired electrons in the p-subshell of oxygen atom

Question # 24

The structure of white phosphorus is

Question # 25

Which one of the following elements occurs free in nature?

Question # 26

Crystalline form of sulphur stable at room temperature is

Question # 27

Ozone is not

Question # 28

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

Question # 29

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

Question # 30

Gypsum is a common mineral of

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ECAT Chemistry Chapter 14 Important MCQ's

Sr.# Question Answer
1 The maximum number of electrons in the outermost shall of s-black elements is
A. One
B. Two
C. Three
D. Four
2 The electrolytic cell used for the production of metallic sodium is known as
A. Down's cell
B. Solvary's cell
C. Haber's cell
D. None of these
3 Dipole moment of CO molecule is:
A. 0.0
B. 1.112 D
C. 0.112 D
D. 2.112 D
4 Which of the following salt is soluble in water
A. CaCO3
B. CaSO4
C. MgSO4
D. BaSO4
5 P2O5is heated with water to give
A. Hypophosphorus acid
B. Phosphorus acid
C. Hypophosphorus acid
D. Orthophosphorus acid
6 Which on of the following compounds does not exist?
A. NCl5
B. AsF5
C. SbCl5
D. PF5
7 Which electronic configuration corresponds to an element of Group ||Z-A of the periodic table?
A. 1s, 2s2, 2p6, 3s2, 3p6, 4s2
B. 1s2 , 2s2 , 2p6 , 3s2, 3p1
C. 1s2, 2s2, 2p6
D. 1s2, 2s2, 2p6, 3s2, 3p3
8 The element which has a simple cubic lattice in solid state is
A. Se
B. Te
C. Po
D. None of these
9 What is chrome yellow?
A. Pbo
B. Pb2O
C. PbCrO4
D. Pb3O4
10 Electron affinity of sulphur is
A. More than O and Se
B. More than O but less than Se
C. Less than O but more than Se
D. Equal to O and Se

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