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

Which of the following is a tetrabasic acid?

Question # 2

Red P can be obtained form white P by

Question # 3

Which of the following compounds is explosive in nature?

Question # 4

Hybridized in carbon is:

Question # 5

In the earth crust sodium is

Question # 6

Chile saltpetre has the chemical formula

Question # 7

Solvay process is used in the manufacture of

Question # 8

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

Question # 9

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

Question # 10

Which of all following compound is not possible

Question # 11

Which is used to remove air bubbles form metals?

Question # 12

Which one of the following equations represent the reaction that occurs when calcium nitrate is heated strongly

Question # 13

Polyanion formation is maximum in

Question # 14

Which of the following is acidic?

Question # 15

Borax is a common mineral of alkali metal sodium. Its formula is

Question # 16

Which of the following fluorides does not exists?

Question # 17

Where lime is not used

Question # 18

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

Question # 19

Which element forms an iron with charge 3+?

Question # 20

Density of aluminium is (g cm-3):

Question # 21

P2O5is heated with water to give

Question # 22

Which is litharge or massicot?

Question # 23

Which property is not present in Al?

Question # 24

Which oxide of nitrogen is obtained on heating ammonium nitrate at 250° C?

Question # 25

Which is not the form of silica?

Question # 26

NaHCO3is commonly called

Question # 27

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

Question # 28

Which salt is used for preserving food

Question # 29

Borax is hydrated:

Question # 30

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

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ECAT Chemistry Chapter 14 Important MCQ's

Sr.# Question Answer
1 The number of unpaired electrons in the p-subshell of oxygen atom
A. 1
B. 2
C. 3
D. 4
2 Basicity of orthoposphoric acid is
A. 2
B. 3
C. 4
D. 5
3 The structure of white phosphorus is
A. Square planar
B. Pyramidal
C. Tetrahedral
D. Trigonal planer
4 The acid which has a peroxy linkage is
A. Sulphurous acid
B. Pyrosulphuric acid
C. Dithionic acid
D. Caro's acid
5 Which of the following is not the reactions of lithium
6 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
7 Where lime is not used
A. In refining or metals
B. In paper industry
C. In glass industry
D. In the preparation of NaOH
8 Copper oxide is dedected by borax bead test with colour:
A. Blue
B. Red
C. Yellow
D. Black
9 Down's cell is used to prepare
A. Sodium carbonate
B. Sodium bicarbonate
C. Sodium metal
D. Sodium hydroxide
10 Which of the following sulphates is not soluble in water
A. Sodium sulphate
B. Potassium sulphate
C. Zinc sulphate
D. Barium sulphate

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