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

Sometimes a yellow turbidity appears while passing H2S gas even in the absence of II group radicals. This is because

Question # 2

The most acidic of the following compounds is

Question # 3

What causes nitrogen to be chemically inert?

Question # 4

The number of electron that are paired in oxygen molecule are

Question # 5

Permonosulphuric acid is known as

Question # 6

Which of the following elements is most metallic?

Question # 7

Which of the following salt is soluble in water

Question # 8

Copper oxide is dedected by borax bead test with colour:

Question # 9

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

Question # 10

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

Question # 11

What is the formula of asbestos?

Question # 12

Sodium hexametaphophate is known as

Question # 13

Corrundam is ore of:

Question # 14

All the following decompose easily on heating to give oxygen except

Question # 15

Ozone is not

Question # 16

Which of the following form normal oxide

Question # 17

Dipole moment of CO molecule is:

Question # 18

Some of the elements of a period show similar behavior with the elements of next group in next period this is called

Question # 19

Orthophosphoric acid is

Question # 20

NaHCO3is commonly called

Question # 21

Oleum is

Question # 22

Sulphuric acid has great affinity for water because

Question # 23

Which of the following element is most reactive

Question # 24

A compound used as eye wash:

Question # 25

Sulphuric acid reacts with PCl5to give

Question # 26

Which one of the following is not an alkali metal

Question # 27

The metal with highest electrical resistance at room temperature is

Question # 28

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

Question # 29

Which of the following is the hardest metal among following

Question # 30

What is chrome yellow?

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ECAT Chemistry Chapter 14 Important MCQ's

Sr.# Question Answer
1 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
2 Density of aluminium is (g cm-3):
A. B
B. Al
C. Si
D. Ge
3 The structure of white phosphorus is
A. Square planar
B. Pyramidal
C. Tetrahedral
D. Trigonal planer
4 S-block elements consist of
A. Alkali metals
B. Alkaline earth metals
C. Alkali and alkaline earth metals
D. None of these
5 The ore CaSO42H2O has the general name
A. Gypsum
B. Dolomite
C. Calcite
D. Epsom salt
6 Which of the following element is most reactive
A. Li
B. Na
C. K
D. Cs
7 Plaster of pares is obtained by heating
A. Gypsum
B. Epsom
C. Lime stone
D. Dolomite
8 When SO2is passed through acidified K2Cr2O7solution
A. The solution turns blue
B. The solution is decolourised
C. SO2is reduced
D. Green Cr2(SO4)3is formed
9 HNO2acts as an/a
A. Acid
B. Oxidizing agent
C. Reducing agent
D. All the three
10 Which of the following elements is most metallic?
A. P
B. As
C. Sb
D. Bi

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