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 one of the following pentafluorides cannot be formed?

Question # 2

Which of the following is formed by the action of water on sodium peroxide?

Question # 3

Which colour is imparted by sodium

Question # 4

S-block elements consist of

Question # 5

In the earth crust sodium is

Question # 6

Boric acid cannot be used:

Question # 7

Which of the following phosphorus is most reactive?

Question # 8

What is chrome yellow?

Question # 9

Lithium reacts with air to form

Question # 10

Which of the following has highest dipole moment?

Question # 11

Which of the following are electropositive in nature

Question # 12

The electrolytic cell used for the production of metallic sodium is known as

Question # 13

Borax is a common mineral of alkali metal sodium. Its formula is

Question # 14

Hypo is used in photography for

Question # 15

______ is called milk of magnesia

Question # 16

The element caesium bears resemblance with

Question # 17

Electron affinity of sulphur is

Question # 18

A compound used as eye wash:

Question # 19

Down's cell is used to prepare

Question # 20

All the elements of oxygen family are

Question # 21

Which of the following fluorides does not exists?

Question # 22

The alkaline earth elements have in their s-orbital

Question # 23

BiCl3on hydrolysis forms a white precipitate of

Question # 24

Which is used to remove air bubbles form metals?

Question # 25

Which of the following sulphates is not soluble in water

Question # 26

Which element among the following belongs to Group IV-A of the periodic table?

Question # 27

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

Question # 28

Which of the following is a tetrabasic acid?

Question # 29

Which is litharge or massicot?

Question # 30

Calcium carbide reacts with water to produce

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ECAT Chemistry Chapter 14 Important MCQ's

Sr.# Question Answer
1 ______ is used in breathing equipments for mountaineers and in space craft
A. Li2O
B. BeO
C. N2
D. KO2
2 Where lime is not used
A. In refining or metals
B. In paper industry
C. In glass industry
D. In the preparation of NaOH
3 Which metal of Group-II A of the periodic Table, will form the least ionic chloride
A. Be
B. Mg
C. Ca
D. Sr
4 Which electronic configuration corresponds to an element of Group ||Z-A of the periodic table?
A. 1s, 2s2, 2p6, 3s2, 3p6, 4s2
B. 1s2 , 2s2 , 2p6 , 3s2, 3p1
C. 1s2, 2s2, 2p6
D. 1s2, 2s2, 2p6, 3s2, 3p3
5 Alkaline earth metals are usually
A. Reducing agent
B. Oxidizing agent
C. Amphoteric
D. Acidic
6 Electron affinity of sulphur is
A. More than O and Se
B. More than O but less than Se
C. Less than O but more than Se
D. Equal to O and Se
7 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
8 Orthophosphoric acid is
A. Monobasic
B. Dibasic
C. Tribasic
D. Tetrabasic
9 A compound used as eye wash:
A. Borax
B. Boric acid
C. Metabolic acid
D. Pyroboric acid
10 The oxidation number of each element of group ll-A is
A. 0
B. +1
C. +2
D. -1

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