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

Boric acid cannot be used:

Question # 2

Which one of the following elements occurs free in nature?

Question # 3

Chile saltpetre has the chemical formula

Question # 4

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

Question # 5

Identify the incorrect statement with respect to ozone

Question # 6

Chemical composition of colemnite is:

Question # 7

Hybridized in oxygen is:

Question # 8

Which of the following is a tetrabasic acid?

Question # 9

The silver bromide in hypo (Na2S2O3) solution is

Question # 10

Sulphuric acid reacts with PCl5to give

Question # 11

Group VA of the periodic table consists of the elements N, P, As, Sb and Bi, On passing from N to Bi, the oxides of the elements of general formula M2O3become

Question # 12

Which colour is imparted by sodium

Question # 13

The acid which has a peroxy linkage is

Question # 14

Orthophosphoric acid is

Question # 15

HNO2acts as an/a

Question # 16

Where lime is not used

Question # 17

Which carbonate of alkali metals is insoluble in water

Question # 18

Density of aluminium is (g cm-3):

Question # 19

Aluminium oxide is:

Question # 20

Calcium carbide reacts with water to produce

Question # 21

Marble is chemically

Question # 22

What is chrome yellow?

Question # 23

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

Question # 24

Copper oxide is dedected by borax bead test with colour:

Question # 25

Which on of the following compounds does not exist?

Question # 26

Which of the following is not the reactions of lithium

Question # 27

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

Question # 28

The metal with highest electrical resistance at room temperature is

Question # 29

Down's cell is used to prepare

Question # 30

Which is used in navigational equipments?

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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 Gypsum is a common mineral of
A. Magnesium
B. Strontium
C. Calcium
D. Barium
3 The acid which has a peroxy linkage is
A. Sulphurous acid
B. Pyrosulphuric acid
C. Dithionic acid
D. Caro's acid
4 Basicity of orthoposphoric acid is
A. 2
B. 3
C. 4
D. 5
5 The structure of white phosphorus is
A. Square planar
B. Pyramidal
C. Tetrahedral
D. Trigonal planer
6 Which of the following elements is not present abundantly in earth's crust?
A. Silicon
B. Aluminium
C. Sodium
D. Oxygen
7 ______ gives peroxide
A. Li
B. Ba
C. Sr
D. Be
8 Which of the following is formed by the action of water on sodium peroxide?
A. H2
B. N2
C. O2
D. CO2
9 Chemical composition of colemnite is:
A. Ca2B6O11.5H2O
B. CaB4O7 .4 H2O
C. Na2B7O7. 4 H2O
D. CaNaB5O9.8H2O
10 Which of the following is not the reactions of lithium

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