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 elements is most metallic?

Question # 2

In a group IIA from top to bottom as the atomic number increases, there is regular decreases in

Question # 3

Sodium is never found free in nature because of its

Question # 4

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

Question # 5

The acid which has a peroxy linkage is

Question # 6

The element caesium bears resemblance with

Question # 7

The most acidic of the following compounds is

Question # 8

When SO2is passed through acidified K2Cr2O7solution

Question # 9

All the following decompose easily on heating to give oxygen except

Question # 10

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

Question # 11

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

Question # 12

Al is the most element in earth crust:

Question # 13

Chile saltpetre has the chemical formula

Question # 14

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

Question # 15

CaC2on hydrolysis form

Question # 16

Which element forms an iron with charge 3+?

Question # 17

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

Question # 18

Which of the following is acidic?

Question # 19

Borax is hydrated:

Question # 20

The alkaline earth elements have in their s-orbital

Question # 21

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

Question # 22

The metal with highest electrical resistance at room temperature is

Question # 23

Phosphine is not obtained by the reaction when

Question # 24

Francium is an element at the bottom of Group I in the Periodic Table. Which one of the following predication is likely to be correct?

Question # 25

What is chrome yellow?

Question # 26

The chemical formula of Epson salt is

Question # 27

Sodium hexametaphophate is known as

Question # 28

Heavy water is obtained by

Question # 29

Which is an essential constituent of chlorophyll

Question # 30

The oxyacids of phosphorus in which phosphorus has the lowest oxidiation state is

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ECAT Chemistry Chapter 14 Important MCQ's

Sr.# Question Answer
1 Down's cell is used to prepare
A. Sodium carbonate
B. Sodium bicarbonate
C. Sodium metal
D. Sodium hydroxide
2 Which element form group 15 gives most basic compound with hydrogen?
A. Nitrogen
B. Bismuth
C. Arsenic
D. Phosphorus
3 Which of the following statement is not related to Solvay's process of Na2CO3
A. Cheap materials
B. Pure product
C. Continuous process
D. Harmful by-products
4 Which one of the following pentafluorides cannot be formed?
A. PF5
B. AsF5
C. SbF5
D. BiF5
5 Which colour is imparted by sodium
A. Yellow
B. Violet
C. Red
D. Crimson
6 Which is used to remove air bubbles form metals?
A. B
B. Be
C. Mg
D. Al
7 All the following decompose easily on heating to give oxygen except
A. Lead nitrate
B. Potassium chlorate
C. Mercuric oxide
D. Manganese dioxide
8 Borax is a common mineral of alkali metal sodium. Its formula is
A. Na2B4O7
B. Na2,B4O7. 10H2O
C. Na2B3O6. 10H2O
D. Na2B4O7- 5H2O
9 Which shows maximum catenation property?
A. S
B. Se
C. Te
D. O
10 ______ reacts with alkalis to give hydrogen
A. Be
B. Mg
C. Ca
D. None

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