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

Hypo is used in photography for

Question # 2

______ gives peroxide

Question # 3

The chemical formula of Epson salt is

Question # 4

Alkaline earth metals posses two electrons in their outermost

Question # 5

Which of the following elements is most metallic?

Question # 6

Baking powder has which one of the following formula

Question # 7

Which of the following salt is used as purgative

Question # 8

Sulphuric acid reacts with PCl5to give

Question # 9

Carbonates of alkali metals dissolves freely in water to form

Question # 10

Commercial common salt becomes slight damp on storing because

Question # 11

Pb has inert pair of electrons:

Question # 12

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

Question # 13

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

Question # 14

Orthophosphoric acid is

Question # 15

The metal with highest electrical resistance at room temperature is

Question # 16

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

Question # 17

Which is an essential constituent of chlorophyll

Question # 18

Which is not the form of silica?

Question # 19

Density of aluminium is (g cm-3):

Question # 20

The acid which has a peroxy linkage is

Question # 21

Borax is hydrated:

Question # 22

Oleum is

Question # 23

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

Question # 24

Which of the following oxides is peroxide?

Question # 25

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

Question # 26

Down's cell is used to prepare

Question # 27

Which element forms an iron with charge 3+?

Question # 28

Which element form group 15 gives most basic compound with hydrogen?

Question # 29

Plaster of pares is obtained by heating

Question # 30

Which of the following is lighter

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ECAT Chapter 14 Important MCQ's

Sr.# Question Answer
1 Which of the following equations represents the action of heat on NaHCO3
2 All the following decompose easily on heating to give oxygen except
A. Lead nitrate
B. Potassium chlorate
C. Mercuric oxide
D. Manganese dioxide
3 What is chrome yellow?
A. Pbo
B. Pb2O
C. PbCrO4
D. Pb3O4
4 Sodium is never found free in nature because of its
A. Chemical reactivity
B. Small ionic size
C. Small atomic volume
D. None of these
5 Commercial common salt becomes slight damp on storing because
A. Common salt is hygroscope
B. Common salt contains some impurity, which is hygroscopic
C. Salt in efflorescent
D. Salt is crystalline
6 Which of the following phosphorus is most reactive?
A. Red phosphorus
B. White phosphorus
C. Scrlet phosphorus
D. Violet phosphorous
7 The number of electron that are paired in oxygen molecule are
A. 16
B. 12
C. 14
D. 7
8 Which is used in navigational equipments?
A. B
B. Be
C. Mg
D. Al
9 The maximum number of electrons in the outermost shall of s-black elements is
A. One
B. Two
C. Three
D. Four
10 Which of the following fluorides does not exists?
A. NF5
B. PF5
C. AsF5
D. SbF5

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