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

00:00
Question # 1

The structure of white phosphorus is

Question # 2

The chemical formula of magnesite is

Question # 3

Which salt is used for preserving food

Question # 4

Which of all following compound is not possible

Question # 5

Crystalline form of sulphur stable at room temperature is

Question # 6

The chemical formula of chile salt peter is

Question # 7

Which of the following compound is industrially prepared by the electrolysis of solution of NaCl

Question # 8

The formula of lime stone is

Question # 9

Dipole moment of CO molecule is:

Question # 10

Sodium is manufacture by the electrolysis of fused sodium chloride and not from an aqueous solution of sodium chloride because

Question # 11

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

Question # 12

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

Question # 13

Which electronic configuration corresponds to an element of Group ||Z-A of the periodic table?

Question # 14

Sulphuric acid reacts with PCl5to give

Question # 15

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

Question # 16

Oleum is

Question # 17

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

Question # 18

Which shows maximum catenation property?

Question # 19

What is going to replace the petroleum?

Question # 20

Commercial common salt becomes slight damp on storing because

Question # 21

Which of the following is lighter

Question # 22

Which of the following is acidic?

Question # 23

Sodium forms largely

Question # 24

The number of electron that are paired in oxygen molecule are

Question # 25

Borax is hydrated:

Question # 26

Which of the following form normal oxide

Question # 27

Heavy water is obtained by

Question # 28

Aluminium oxide is:

Question # 29

Which of the following phosphorus is most reactive?

Question # 30

Red P can be obtained form white P by

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ECAT Chemistry Chapter 14 Important MCQ's

Sr.# Question Answer
1 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
2 Borax is a common mineral of alkali metal sodium. Its formula is
A. Na2B4O7
B. Na2,B4O7. 10H2O
C. Na2B3O6. 10H2O
D. Na2B4O7- 5H2O
3 Which of all following compound is not possible
4 The chemical formula of chile salt peter is
A. Na2CO3
B. KNO3
C. NaNO3
D. NaNO2
5 Which metal is used in the thermit process because of its activity?
A. Iron
B. Copper
C. Alumnium
D. Zinc
6 Crystalline form of sulphur stable at room temperature is
A. Rhombic sulphur
B. Monoclinic sulphur
C. Plastic sulphur
D. Prismatic sulphur
7 What is chrome yellow?
A. Pbo
B. Pb2O
C. PbCrO4
D. Pb3O4
8 Carbonates of alkali metals dissolves freely in water to form
A. Acidic solutions
B. Neutral solution
C. Alkaline solution
D. None of these
9 Which element among the following belongs to Group IV-A of the periodic table?
A. Barium
B. Iodine
C. Lead
D. Oxygen
10 Chemical composition of colemnite is:
A. Ca2B6O11.5H2O
B. CaB4O7 .4 H2O
C. Na2B7O7. 4 H2O
D. CaNaB5O9.8H2O

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