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

The alkali metals form

Question # 2

Which of the following oxides is peroxide?

Question # 3

Pb has inert pair of electrons:

Question # 4

The metal with highest electrical resistance at room temperature is

Question # 5

Which of the following fluorides does not exists?

Question # 6

In the earth crust sodium is

Question # 7

______ is called milk of magnesia

Question # 8

The alkaline earth elements have in their s-orbital

Question # 9

The ore CaSO42H2O has the general name

Question # 10

When SO2is passed through acidified K2Cr2O7solution

Question # 11

Which salt is used for the treatment of hyperacidity in stomach

Question # 12

The chemical formula of chile salt peter is

Question # 13

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

Question # 14

All the elements of oxygen family are

Question # 15

Commercial common salt becomes slight damp on storing because

Question # 16

Which on of the following compounds does not exist?

Question # 17

Electron affinity of sulphur is

Question # 18

Which one of the following elements occurs free in nature?

Question # 19

The element which has a simple cubic lattice in solid state is

Question # 20

LiOH ______ soluble than NaOH

Question # 21

White phosphorus is

Question # 22

Sodium should be stored in

Question # 23

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

Question # 24

Tincal is a mineral of:

Question # 25

Which will have the maximum value of heat of hydration

Question # 26

Chemical composition of colemnite is:

Question # 27

Which of the following elements is most metallic?

Question # 28

When ammonia is heated with cupric oxide, a molecule of ammonia will

Question # 29

Sodium is manufacture by the electrolysis of fused sodium chloride and not from an aqueous solution of sodium chloride because

Question # 30

Chile saltpetre has the chemical formula

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ECAT Chemistry Chapter 14 Important MCQ's

Sr.# Question Answer
1 Which of the following are electropositive in nature
A. Alkali metals
B. Alkaline earth metals
C. Halogens
D. Alkali and alkaline earth metals
2 Sodium should be stored in
A. Air free from moisture
B. Air free form carbon dioxide
C. Under water
D. Under kerosene oil
3 The chemical formula of magnesite is
A. MgCl2
B. Mg(HCO3)2
C. MgCO3
D. None of these
4 Which one of the following pentafluorides cannot be formed?
A. PF5
B. AsF5
C. SbF5
D. BiF5
5 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
6 Copper oxide is dedected by borax bead test with colour:
A. Blue
B. Red
C. Yellow
D. Black
7 Ozone is not
A. An allotrope
B. A powerful oxidizing agent
C. Paramagnetic
D. A bent molecule
8 Which of the following salt is soluble in water
A. CaCO3
B. CaSO4
C. MgSO4
D. BaSO4
9 The alkaline earth elements have in their s-orbital
A. One electron
B. Two electron
C. No electron
D. Three electron
10 What causes nitrogen to be chemically inert?
A. Multiple bond formation in the molecule
B. Absence of bond distance
C. Short internuclear distance
D. High bond energy

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