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

Chief ore of aluminium is:

Question # 2

Solvay process is used in the manufacture of

Question # 3

Sodium forms largely

Question # 4

Where lime is not used

Question # 5

Lime, calcium oxide, is used in agriculture for

Question # 6

The alkali metals form

Question # 7

HNO2acts as an/a

Question # 8

Density of aluminium is (g cm-3):

Question # 9

S-block elements consist of

Question # 10

The element caesium bears resemblance with

Question # 11

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

Question # 12

The electrolytic cell used for the production of metallic sodium is known as

Question # 13

Sometimes a yellow turbidity appears while passing H2S gas even in the absence of II group radicals. This is because

Question # 14

The acid which has a peroxy linkage is

Question # 15

The chemical formula of Trona is

Question # 16

Which of the following form normal oxide

Question # 17

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

Question # 18

______ is called milk of magnesia

Question # 19

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

Question # 20

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

Question # 21

Bond angle is minimum for

Question # 22

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?

Question # 23

Which carbonate of alkali metals is insoluble in water

Question # 24

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

Question # 25

Which is used to remove air bubbles form metals?

Question # 26

Which of the following has highest dipole moment?

Question # 27

Alkali metals react violently with halogens to form

Question # 28

Which is litharge or massicot?

Question # 29

Hypo is used in photography for

Question # 30

Identify the incorrect statement with respect to ozone

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ECAT Chemistry Chapter 14 Important MCQ's

Sr.# Question Answer
1 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
2 Which of the following statement is not related to Solvay's process of Na2CO3
A. Cheap materials
B. Pure product
C. Continuous process
D. Harmful by-products
3 When a colourless gas is passed through bromine water only decolourisation takes place the gas is
A. SO2
B. HBR
C. HCl
D. H2S
4 Which of the following has highest dipole moment?
A. NH3
B. PH3
C. AsH3
D. SbH3
5 Phosphorus pentoxide finds use as
A. An oxidizing agent
B. A reducing agent
C. A bleaching agent
D. A dehydrating agent
6 Alkali metals react violently with halogens to form
A. Hydrides
B. Halides
C. Anyhydrides
D. None of these
7 Orthophosphoric acid is
A. Monobasic
B. Dibasic
C. Tribasic
D. Tetrabasic
8 Which of the element is not alkali metal
A. Lithium
B. Rubidium
C. Francium
D. Magnesium
9 Which one of the following pentafluorides cannot be formed?
A. PF5
B. AsF5
C. SbF5
D. BiF5
10 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

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