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

Chile saltpetre has the chemical formula

Question # 2

Plaster of pares is obtained by heating

Question # 3

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

Question # 4

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

Question # 5

Pb has inert pair of electrons:

Question # 6

Orthophosphoric acid is

Question # 7

The chemical formula of Trona is

Question # 8

Which of the following compound is industrially prepared by the electrolysis of solution of NaCl

Question # 9

The acid used in lead storage cells is

Question # 10

Which one of the following equations represent the reaction that occurs when calcium nitrate is heated strongly

Question # 11

Lime, calcium oxide, is used in agriculture for

Question # 12

HNO2acts as an/a

Question # 13

Each of the following is true of white and red phosphours except that they

Question # 14

Which of the following compounds is explosive in nature?

Question # 15

The metal with highest electrical resistance at room temperature is

Question # 16

CaC2on hydrolysis form

Question # 17

Carbonates of alkali metals dissolves freely in water to form

Question # 18

Which one of the following is not an alkali metal

Question # 19

Hybridized in carbon is:

Question # 20

White phosphorus is

Question # 21

Down's cell is used to prepare

Question # 22

Alkaline earth metals posses two electrons in their outermost

Question # 23

What is the formula of asbestos?

Question # 24

What is chrome yellow?

Question # 25

All the elements of oxygen family are

Question # 26

Boric acid cannot be used:

Question # 27

White P when boiled with strong solution of caustic soda produces

Question # 28

Which of the following is a tetrabasic acid?

Question # 29

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

Question # 30

The element caesium bears resemblance with

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ECAT Chemistry Chapter 14 Important MCQ's

Sr.# Question Answer
1 Chile saltpetre has the chemical formula
A. NaNO3
B. KNO3
C. Na2B4O7
D. Na2CO3H2O
2 Identify the incorrect statement with respect to ozone
A. Ozone is formed in the upper atmosphere by a photochemical reaction involving dioxygen
B. Ozone is more reactive than diaoxygen
C. Ozone is diamagnetic whereas dioxygen is paramagnetic
D. Ozone protects the earth's inhabitants by absorbing gamma-radiations
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 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
5 Which salt is used for preserving food
A. BaCl2
B. CaCl2
C. NaCl
D. Na2SO4
6 What causes nitrogen to be chemically inert?
A. Multiple bond formation in the molecule
B. Absence of bond distance
C. Short internuclear distance
D. High bond energy
7 The metal with highest electrical resistance at room temperature is
A. Pb
B. Te
C. Po
D. Fe
8 The ore CaSO42H2O has the general name
A. Gypsum
B. Dolomite
C. Calcite
D. Epsom salt
9 Which is used to remove air bubbles form metals?
A. B
B. Be
C. Mg
D. Al
10 Which one of the following equations represent the reaction that occurs when calcium nitrate is heated strongly

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