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

Alkaline earth metals are usually

Question # 2

Which is litharge or massicot?

Question # 3

Which will have the maximum value of heat of hydration

Question # 4

As a fixing agent in photography, sodium thisoulphate is used for

Question # 5

Bond angle is minimum for

Question # 6

Marble is chemically

Question # 7

NaHCO3is commonly called

Question # 8

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

Question # 9

What causes nitrogen to be chemically inert?

Question # 10

Silicon atom is hybridized:

Question # 11

What is the formula of asbestos?

Question # 12

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

Question # 13

Which property is not present in Al?

Question # 14

In the earth crust sodium is

Question # 15

______ is used in breathing equipments for mountaineers and in space craft

Question # 16

The number of electron that are paired in oxygen molecule are

Question # 17

Corrundam is ore of:

Question # 18

Which of the following is a tetrabasic acid?

Question # 19

The structure of white phosphorus is

Question # 20

Sodium is never found free in nature because of its

Question # 21

All the following decompose easily on heating to give oxygen except

Question # 22

The silver bromide in hypo (Na2S2O3) solution is

Question # 23

Basicity of orthoposphoric acid is

Question # 24

Lithium reacts with air to form

Question # 25

The chemical formula of gypsum is

Question # 26

Hypo is used in photography for

Question # 27

The chemical formula of magnesite is

Question # 28

Density of aluminium is (g cm-3):

Question # 29

Aluminium oxide is:

Question # 30

Oleum is

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ECAT Chemistry Chapter 14 Important MCQ's

Sr.# Question Answer
1 Borax is a common mineral of alkali metal sodium. Its formula is
A. Na2B4O7
B. Na2,B4O7. 10H2O
C. Na2B3O6. 10H2O
D. Na2B4O7- 5H2O
2 Which is used to remove air bubbles form metals?
A. B
B. Be
C. Mg
D. Al
3 Which of the following has highest dipole moment?
A. NH3
B. PH3
C. AsH3
D. SbH3
4 Sodium hexametaphophate is known as
A. Calgon
B. Permutite
C. Natalite
D. Nitrolim
5 The number of unpaired electrons in the p-subshell of oxygen atom
A. 1
B. 2
C. 3
D. 4
6 Which of the following is a tetrabasic acid?
A. ORthophosphoric acid
B. Hyposphosphorus acid
C. Metaphosphoric
D. Pyrophosphoric acid
7 Alkaline earth metals posses two electrons in their outermost
A. F-orbital
B. D-orbital
C. S-orbital
D. P-orbital
8 Which of the following salt is soluble in water
A. CaCO3
B. CaSO4
C. MgSO4
D. BaSO4
9 Orthophosphoric acid is
A. Monobasic
B. Dibasic
C. Tribasic
D. Tetrabasic
10 Which element forms an iron with charge 3+?
A. Berylium
B. Aluminium
C. Carbon
D. Silicon

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