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

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

Question # 2

Which is not the form of silica?

Question # 3

The chemical formula of gypsum is

Question # 4

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

Question # 5

Which is used in navigational equipments?

Question # 6

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

Question # 7

Hypo is used in photography for

Question # 8

Which of the following salt is used as purgative

Question # 9

______ reacts with alkalis to give hydrogen

Question # 10

Which metal is used in the thermit process because of its activity?

Question # 11

Dipole moment of CO molecule is:

Question # 12

Which of the following is formed by the action of water on sodium peroxide?

Question # 13

Which salt is used for the treatment of hyperacidity in stomach

Question # 14

Al is the most element in earth crust:

Question # 15

Which of the element is not an alkaline earth metal

Question # 16

Which carbonate of alkali metals is insoluble in water

Question # 17

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

Question # 18

White P when boiled with strong solution of caustic soda produces

Question # 19

Orthophosphoric acid is

Question # 20

The oxide of beryllium is

Question # 21

Oleum is

Question # 22

CaC2on hydrolysis form

Question # 23

On alkali and alkaline earth metals down the group, there is decreasing trend in

Question # 24

Chemical composition of colemnite is:

Question # 25

The alkaline earth elements have in their s-orbital

Question # 26

Bond angle is minimum for

Question # 27

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

Question # 28

P2O5is heated with water to give

Question # 29

The number of unpaired electrons in the p-subshell of oxygen atom

Question # 30

The chemical formula of chile salt peter is

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ECAT Chemistry Chapter 14 Important MCQ's

Sr.# Question Answer
1 The chemical formula of gypsum is
A. CaSO4. 5H2O
B. CaSO4. 4H2O
C. CaSO4. 2H2O
D. None of these
2 Sometimes a yellow turbidity appears while passing H2S gas even in the absence of II group radicals. This is because
A. Sulphur is present in the mixture as impurity
B. IV group radicals are precipitated as sulphides
C. Of the oxidation of H2S gas by some acid radicals
D. III group radicals are precipitated as hydroxides
3 In a group IIA from top to bottom as the atomic number increases, there is regular decreases in
A. Ionic size
B. Atomic size
C. Ionization potential
D. None of these
4 Which on of the following compounds does not exist?
A. NCl5
B. AsF5
C. SbCl5
D. PF5
5 Calcium carbide reacts with water to produce
A. Acetylene
B. Methane
C. Ethylene
D. Ethane
6 Which has soapy touch?
A. Na2B4O7
B. H3BO3
C. Ca2B6O11
D. HBO2
7 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
8 Sodium hexametaphophate is known as
A. Calgon
B. Permutite
C. Natalite
D. Nitrolim
9 Hypo is used in photography for
A. Developing picture
B. Picture printed
C. The colour of picture
D. The fixation of picture
10 Which element among the following belongs to Group IV-A of the periodic table?
A. Barium
B. Iodine
C. Lead
D. Oxygen

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