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

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

Question # 2

Which is not the form of silica?

Question # 3

Alkaline earth metals are usually

Question # 4

Which one of the following elements occurs free in nature?

Question # 5

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

Question # 6

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

Question # 7

Chemical composition of colemnite is:

Question # 8

CaC2on hydrolysis form

Question # 9

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

Question # 10

The alkaline earth elements have in their s-orbital

Question # 11

______ is called milk of magnesia

Question # 12

Commercial common salt becomes slight damp on storing because

Question # 13

Tincal is a mineral of:

Question # 14

The chemical formula of Epson salt is

Question # 15

The metal with highest electrical resistance at room temperature is

Question # 16

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

Question # 17

Which of the following equations represents the action of heat on NaHCO3

Question # 18

Alkali metals react violently with halogens to form

Question # 19

The chemical formula of magnesite is

Question # 20

P2O5is heated with water to give

Question # 21

Which of the following is lighter

Question # 22

Which salt is used for preserving food

Question # 23

Dipole moment of CO molecule is:

Question # 24

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

Question # 25

Marble is chemically

Question # 26

Which of the following oxides is peroxide?

Question # 27

Crystalline form of sulphur stable at room temperature is

Question # 28

Which of the following sulphates has the highest solubility in water

Question # 29

Gypsum is a common mineral of

Question # 30

Which on of the following compounds does not exist?

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ECAT Chemistry Chapter 14 Important MCQ's

Sr.# Question Answer
1 The oxidation number of each element of group ll-A is
A. 0
B. +1
C. +2
D. -1
2 Marble is chemically
A. CaCl2
B. CaCO3
C. Na2CO3
D. NaHCO3
3 Which carbonate of alkali metals is insoluble in water
A. Na2CO3
B. K2CO3
C. Li2CO3
D. Cs2CO3
4 Which element forms an iron with charge 3+?
A. Berylium
B. Aluminium
C. Carbon
D. Silicon
5 The metal with highest electrical resistance at room temperature is
A. Pb
B. Te
C. Po
D. Fe
6 LiOH ______ soluble than NaOH
A. More soluble
B. Less soluble
C. Equally soluble
D. None
7 Which oxide of nitrogen is obtained on heating ammonium nitrate at 250° C?
A. Nitric oxide
B. Nitrous oxide
C. Nitrogen dioxide
D. Dinitrogen tetraoxide
8 Pb has inert pair of electrons:
A. One
B. Two
C. Three
D. Four
9 The ore CaSO42H2O has the general name
A. Gypsum
B. Dolomite
C. Calcite
D. Epsom salt
10 Which is litharge or massicot?
A. PbO
B. Pb2O
C. Pb3O4
D. PbO2

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