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

Carbonates of alkali metals dissolves freely in water to form

Question # 2

Chemical composition of colemnite is:

Question # 3

White P when boiled with strong solution of caustic soda produces

Question # 4

The chemical formula of gypsum is

Question # 5

The chemical formula of magnesite is

Question # 6

Chile saltpetre has the chemical formula

Question # 7

Density of aluminium is (g cm-3):

Question # 8

Identify the incorrect statement with respect to ozone

Question # 9

The chemical formula of Epson salt is

Question # 10

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

Question # 11

Electron affinity of sulphur is

Question # 12

Commercial common salt becomes slight damp on storing because

Question # 13

The chemical formula of chile salt peter is

Question # 14

Which colour is imparted by sodium

Question # 15

Gypsum is applied to the soil to provide calcium and

Question # 16

Hypo is used in photography for

Question # 17

Hybridized in carbon is:

Question # 18

Which of the following sulphates is not soluble in water

Question # 19

The element caesium bears resemblance with

Question # 20

The chemical formula of Trona is

Question # 21

Which of the following is a tetrabasic acid?

Question # 22

Corrundam is ore of:

Question # 23

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

Question # 24

______ reacts with alkalis to give hydrogen

Question # 25

Which property is not present in Al?

Question # 26

NaHCO3is prepared by

Question # 27

Which of the following fluorides does not exists?

Question # 28

Sodium forms largely

Question # 29

Silicon atom is hybridized:

Question # 30

Which of the following elements is not present abundantly in earth's crust?

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ECAT Chemistry Chapter 14 Important MCQ's

Sr.# Question Answer
1 What is chrome yellow?
A. Pbo
B. Pb2O
C. PbCrO4
D. Pb3O4
2 Which of the following sulphates has the highest solubility in water
A. BaSO4
B. CaSO4
C. MgSO4
D. BeSO4
3 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
4 What is the formula of asbestos?
A. CaMg3(SiO3)4
B. CaSiO3
C. Na2SiO3
D. Mg3H2(SiO3)4
5 Which has soapy touch?
A. Na2B4O7
B. H3BO3
C. Ca2B6O11
D. HBO2
6 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
7 On alkali and alkaline earth metals down the group, there is decreasing trend in
A. m.p.
B. b.p.
C. Ionization potentiall
D. All of these
8 Each of the following is true of white and red phosphours except that they
A. Are both soluble in CS2
B. Can be oxidized by heating in air
C. Consist of the same kind of atoms
D. Can be converted into one another
9 The oxidation number of each element of group ll-A is
A. 0
B. +1
C. +2
D. -1
10 Which one of the following elements occurs free in nature?
A. N
B. P
C. As
D. Sb

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