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

Which of the following is not the reactions of lithium

Question # 2

Which of the following is the hardest metal among following

Question # 3

Which will have the maximum value of heat of hydration

Question # 4

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

Question # 5

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

Question # 6

Sulphuric acid reacts with PCl5to give

Question # 7

Sulphuric acid has great affinity for water because

Question # 8

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

Question # 9

All the elements of oxygen family are

Question # 10

Lithium reacts with air to form

Question # 11

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

Question # 12

Chief ore of aluminium is:

Question # 13

Identify the incorrect statement with respect to ozone

Question # 14

Down's cell is used to prepare

Question # 15

Chemical composition of colemnite is:

Question # 16

LiOH ______ soluble than NaOH

Question # 17

NaHCO3is prepared by

Question # 18

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

Question # 19

Sodium hexametaphophate is known as

Question # 20

All the following decompose easily on heating to give oxygen except

Question # 21

Which one of the following equations represent the reaction that occurs when calcium nitrate is heated strongly

Question # 22

In the earth crust sodium is

Question # 23

Which element has highest oxidation potential

Question # 24

When SO2is passed through acidified K2Cr2O7solution

Question # 25

When a colourless gas is passed through bromine water only decolourisation takes place the gas is

Question # 26

Electron affinity of sulphur is

Question # 27

What is the formula of asbestos?

Question # 28

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

Question # 29

The structure of white phosphorus is

Question # 30

Which is an essential constituent of chlorophyll

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ECAT Chemistry Chapter 14 Important MCQ's

Sr.# Question Answer
1 Which is used to remove air bubbles form metals?
A. B
B. Be
C. Mg
D. Al
2 When sulphur is boiled with Na2SO3solution, the compound formed is
A. Sodium sulphides
B. Sodiums sulphates
C. Sodium persulphate
D. Sodium thiosulphate
3 Tincal is a mineral of:
A. Al
B. B
C. Si
D. C
4 Which carbonate of alkali metals is insoluble in water
A. Na2CO3
B. K2CO3
C. Li2CO3
D. Cs2CO3
5 When ammonia is heated with cupric oxide, a molecule of ammonia will
A. Gain 3 electrons
B. Lose 3 electrons
C. Gain 2 electrons
D. Lose 2 electrons
6 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
7 The electrolytic cell used for the production of metallic sodium is known as
A. Down's cell
B. Solvary's cell
C. Haber's cell
D. None of these
8 Which oxide of nitrogen is obtained on heating ammonium nitrate at 250° C?
A. Nitric oxide
B. Nitrous oxide
C. Nitrogen dioxide
D. Dinitrogen tetraoxide
9 Which of the following salt is soluble in water
A. CaCO3
B. CaSO4
C. MgSO4
D. BaSO4
10 Which element form group 15 gives most basic compound with hydrogen?
A. Nitrogen
B. Bismuth
C. Arsenic
D. Phosphorus

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