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

Density of aluminium is (g cm-3):

Question # 2

Which salt is used for the treatment of hyperacidity in stomach

Question # 3

Which element forms an iron with charge 3+?

Question # 4

Oleum is

Question # 5

The metal with highest electrical resistance at room temperature is

Question # 6

Gypsum is applied to the soil to provide calcium and

Question # 7

Boric acid cannot be used:

Question # 8

Phosphine is not obtained by the reaction when

Question # 9

Orthophosphoric acid is

Question # 10

Phosphorus pentoxide finds use as

Question # 11

Plaster of pares is obtained by heating

Question # 12

Which one of the following pentafluorides cannot be formed?

Question # 13

______ is used in breathing equipments for mountaineers and in space craft

Question # 14

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

Question # 15

Sodium is never found free in nature because of its

Question # 16

When SO2is passed through acidified K2Cr2O7solution

Question # 17

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

Question # 18

Chile saltpetre has the chemical formula

Question # 19

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

Question # 20

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

Question # 21

Red P can be obtained form white P by

Question # 22

The structure of white phosphorus is

Question # 23

S-block elements consist of

Question # 24

The acid which has a peroxy linkage is

Question # 25

Which will have the maximum value of heat of hydration

Question # 26

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

Question # 27

Which of the following salt is soluble in water

Question # 28

The alkali metals form

Question # 29

Hybridized in oxygen is:

Question # 30

Alkaline earth metals are usually

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ECAT Chemistry Chapter 14 Important MCQ's

Sr.# Question Answer
1 Which of the following sulphates is not soluble in water
A. Sodium sulphate
B. Potassium sulphate
C. Zinc sulphate
D. Barium sulphate
2 Which of the following salt is used as purgative
A. CaSO4
B. MgSO4
C. BeSO4
D. NaCl
3 As a fixing agent in photography, sodium thisoulphate is used for
A. Dissolving out unreacted silver bromide
B. Converting silver
C. Reducing solubility of AgBr
D. Preventing overdeveloping and fogging
4 Which metal is used in the thermit process because of its activity?
A. Iron
B. Copper
C. Alumnium
D. Zinc
5 LiOH ______ soluble than NaOH
A. More soluble
B. Less soluble
C. Equally soluble
D. None
6 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
7 Boric acid cannot be used:
A. An antiseptic in medicine
B. For washing eyes
C. In soda bottles
D. For enamels and glazes
8 The acid used in lead storage cells is
A. Phosphoric acid
B. Nitric acid
C. Sulphuric acid
D. Hydrochloric acid
9 Some of the elements of a period show similar behavior with the elements of next group in next period this is called
A. Vertical relationship
B. Oblique relationship
C. Diagonal relationship
D. None
10 The oxidation number of each element of group l-A is
A. 0
B. +1
C. +2
D. -1

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