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

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

Question # 2

Which of the following compounds is explosive in nature?

Question # 3

What causes nitrogen to be chemically inert?

Question # 4

The acid used in lead storage cells is

Question # 5

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

Question # 6

Which on of the following compounds does not exist?

Question # 7

As a fixing agent in photography, sodium thisoulphate is used for

Question # 8

Marble is chemically

Question # 9

Chief ore of aluminium is:

Question # 10

On alkali and alkaline earth metals down the group, there is decreasing trend in

Question # 11

Which salt is used for preserving food

Question # 12

Which of the element is not alkali metal

Question # 13

The chemical formula of chile salt peter is

Question # 14

The chemical formula of gypsum is

Question # 15

Lime, calcium oxide, is used in agriculture for

Question # 16

Which of the following element is most reactive

Question # 17

Which of all following compound is not possible

Question # 18

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

Question # 19

Density of aluminium is (g cm-3):

Question # 20

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

Question # 21

Plaster of pares is obtained by heating

Question # 22

Chile saltpetre has the chemical formula

Question # 23

NaHCO3is commonly called

Question # 24

Down's cell is used to prepare

Question # 25

Which one of the following is not an alkali metal

Question # 26

Which will have the maximum value of heat of hydration

Question # 27

______ is called milk of magnesia

Question # 28

Which of the following sulphates is not soluble in water

Question # 29

All the following decompose easily on heating to give oxygen except

Question # 30

Which of the following is acidic?

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ECAT Chemistry Chapter 14 Important MCQ's

Sr.# Question Answer
1 Which has soapy touch?
A. Na2B4O7
B. H3BO3
C. Ca2B6O11
D. HBO2
2 Red P can be obtained form white P by
A. Heating it with a catalyst in an inert atmosphere
B. Distilling it in an inert atmosphere
C. Dissolving it in CS2and crysllizing
D. Melting it ad pouring the liquid into water
3 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?
A. It will react with water to liberate oxygen
B. Its hydroxide will be a strong alkali in water
C. Its carbonate will decompose on heating to give carbon dioxide
D. Its nitrate on heating will give nitrogen dioxide and oxygen
4 The number of electron that are paired in oxygen molecule are
A. 16
B. 12
C. 14
D. 7
5 Which of the following elements is not present abundantly in earth's crust?
A. Silicon
B. Aluminium
C. Sodium
D. Oxygen
6 The alkaline earth elements have in their s-orbital
A. One electron
B. Two electron
C. No electron
D. Three electron
7 Sodium is manufacture by the electrolysis of fused sodium chloride and not from an aqueous solution of sodium chloride because
A. Sodium chloride does not ionize in the water solution
B. Sodium chloride is not soluble in water
C. Sodium deposited at the cathode may react with water to form sodium hydroxide
D. Electricity does not pass through aqueous NaCl
8 The chemical formula of chile salt peter is
A. Na2CO3
B. KNO3
C. NaNO3
D. NaNO2
9 Which of the following is not the reactions of lithium
10 All the elements of oxygen family are
A. Non metals
B. Metalloids
C. Radioactive
D. Polymorphic

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