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

The chemical formula of Epson salt is

Question # 2

Which is not the form of silica?

Question # 3

When a colourless gas is passed through bromine water only decolourisation takes place the gas is

Question # 4

Baking powder has which one of the following formula

Question # 5

When sulphur is boiled with Na2SO3solution, the compound formed is

Question # 6

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

Question # 7

Which of the following element is most reactive

Question # 8

Permonosulphuric acid is known as

Question # 9

Which of the following oxides is peroxide?

Question # 10

Which salt is used for preserving food

Question # 11

Which one of the following pentafluorides cannot be formed?

Question # 12

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

Question # 13

Which of the following is lighter

Question # 14

Copper oxide is dedected by borax bead test with colour:

Question # 15

The metal with highest electrical resistance at room temperature is

Question # 16

Group VA of the periodic table consists of the elements N, P, As, Sb and Bi, On passing from N to Bi, the oxides of the elements of general formula M2O3become

Question # 17

Alkaline earth metals posses two electrons in their outermost

Question # 18

The alkaline earth elements have in their s-orbital

Question # 19

Which carbonate of alkali metals is insoluble in water

Question # 20

Boric acid cannot be used:

Question # 21

Hybridized in carbon is:

Question # 22

Lime, calcium oxide, is used in agriculture for

Question # 23

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

Question # 24

The structure of white phosphorus is

Question # 25

Oleum is

Question # 26

Which metal of Group-II A of the periodic Table, will form the least ionic chloride

Question # 27

Which on of the following compounds does not exist?

Question # 28

In a group IIA from top to bottom as the atomic number increases, there is regular decreases in

Question # 29

The acid used in lead storage cells is

Question # 30

______ reacts with alkalis to give hydrogen

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ECAT Chemistry Chapter 14 Important MCQ's

Sr.# Question Answer
1 Hybridized in oxygen is:
A. sp
B. sp2
C. sp3
D. dsp3
2 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
3 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
4 ______ is used in breathing equipments for mountaineers and in space craft
A. Li2O
B. BeO
C. N2
D. KO2
5 Basicity of orthoposphoric acid is
A. 2
B. 3
C. 4
D. 5
6 The oxidation number of each element of group ll-A is
A. 0
B. +1
C. +2
D. -1
7 Which of the following fluorides does not exists?
A. NF5
B. PF5
C. AsF5
D. SbF5
8 The electrolytic cell used for the production of metallic sodium is known as
A. Down's cell
B. Solvary's cell
C. Haber's cell
D. None of these
9 Lithium reacts with air to form
A. Peroxide
B. Normal oxide
C. Superoxide
D. None of these
10 Sodium forms largely
A. Normal oxides
B. Per-oxides
C. Superoxides
D. None of these

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