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

00:00
Question # 1

Chile saltpetre has the chemical formula

Question # 2

______ reacts with alkalis to give hydrogen

Question # 3

Copper oxide is dedected by borax bead test with colour:

Question # 4

Which one of the following does not belong to alkaline earth metals

Question # 5

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

Question # 6

Which of the following fluorides does not exists?

Question # 7

Pb has inert pair of electrons:

Question # 8

Which is used to remove air bubbles form metals?

Question # 9

Boric acid cannot be used:

Question # 10

Which of the element is not alkali metal

Question # 11

Which of the following equations represents the action of heat on NaHCO3

Question # 12

The chemical formula of gypsum is

Question # 13

The structure of white phosphorus is

Question # 14

Which has soapy touch?

Question # 15

Sodium is never found free in nature because of its

Question # 16

The chemical formula of magnesite is

Question # 17

HNO2acts as an/a

Question # 18

P2O5is heated with water to give

Question # 19

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

Question # 20

Which element has highest oxidation potential

Question # 21

______ is called milk of magnesia

Question # 22

LiOH ______ soluble than NaOH

Question # 23

The number of electron that are paired in oxygen molecule are

Question # 24

Lime, calcium oxide, is used in agriculture for

Question # 25

Which of the following is a tetrabasic acid?

Question # 26

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

Question # 27

The ore CaSO42H2O has the general name

Question # 28

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

Question # 29

What is chrome yellow?

Question # 30

Tincal is a mineral of:

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ECAT Chemistry Chapter 14 Important MCQ's

Sr.# Question Answer
1 Boric acid cannot be used:
A. An antiseptic in medicine
B. For washing eyes
C. In soda bottles
D. For enamels and glazes
2 The silver bromide in hypo (Na2S2O3) solution is
A. Soluble
B. Not soluble
C. Precipitated
D. Not effect
3 P2O5is heated with water to give
A. Hypophosphorus acid
B. Phosphorus acid
C. Hypophosphorus acid
D. Orthophosphorus acid
4 Sulphuric acid has great affinity for water because
A. It hydrolyses the acid
B. It decomposes the acid
C. Acid forms hydrates with water
D. Acid decomposes water
5 White phosphorus is
A. A mono atomic gas
B. P4, a tetrahedral solid
C. P8, a crown
D. A linear diatomic molecule
6 Hybridized in carbon is:
A. sp
B. sp2
C. sp3
D. d2sp
7 Hypo is used in photography for
A. Developing picture
B. Picture printed
C. The colour of picture
D. The fixation of picture
8 The chemical formula of chile salt peter is
A. Na2CO3
B. KNO3
C. NaNO3
D. NaNO2
9 Which one of the following equations represent the reaction that occurs when calcium nitrate is heated strongly
10 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

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