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

00:00
Question # 1

The alkali metals form

Question # 2

______ reacts with alkalis to give hydrogen

Question # 3

The formula of lime stone is

Question # 4

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

Question # 5

The number of electron that are paired in oxygen molecule are

Question # 6

Red P can be obtained form white P by

Question # 7

Which of the following oxides is peroxide?

Question # 8

Calcium carbide reacts with water to produce

Question # 9

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

Question # 10

The alkaline earth elements have in their s-orbital

Question # 11

Sulphuric acid has great affinity for water because

Question # 12

Which will have the maximum value of heat of hydration

Question # 13

Which on of the following compounds does not exist?

Question # 14

The metal with highest electrical resistance at room temperature is

Question # 15

Gypsum is a common mineral of

Question # 16

What causes nitrogen to be chemically inert?

Question # 17

Which of the following are electropositive in nature

Question # 18

Which is used to remove air bubbles form metals?

Question # 19

Commercial common salt becomes slight damp on storing because

Question # 20

Copper oxide is dedected by borax bead test with colour:

Question # 21

Phosphide ion has the electronic structure similar to that of

Question # 22

Chile saltpetre has the chemical formula

Question # 23

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

Question # 24

P2O5is heated with water to give

Question # 25

______ gives peroxide

Question # 26

All the following decompose easily on heating to give oxygen except

Question # 27

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

Question # 28

Which of the following is acidic?

Question # 29

Tincal is a mineral of:

Question # 30

A compound used as eye wash:

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ECAT Chemistry Chapter 14 Important MCQ's

Sr.# Question Answer
1 Silicon atom is hybridized:
A. sp
B. sp2
C. sp3
D. dsp2
2 As a fixing agent in photography, sodium thisoulphate is used for
A. Dissolving out unreacted silver bromide
B. Converting silver
C. Reducing solubility of AgBr
D. Preventing overdeveloping and fogging
3 The most acidic of the following compounds is
A. P2O3
B. Sb2O3
C. B2O3
D. As2O3
4 The chemical formula of Epson salt is
A. MgSO4
B. MgCl2
C. MgSO4. 7H2O
D. MgCl2. 7H2O
5 HNO2acts as an/a
A. Acid
B. Oxidizing agent
C. Reducing agent
D. All the three
6 Plaster of pares is obtained by heating
A. Gypsum
B. Epsom
C. Lime stone
D. Dolomite
7 Which of the following compounds is explosive in nature?
A. Phosphorus trichloride
B. Nitrogen trichloride
C. Hyponitrous acid
D. Nitrosyl chloride
8 All the elements of oxygen family are
A. Non metals
B. Metalloids
C. Radioactive
D. Polymorphic
9 Where lime is not used
A. In refining or metals
B. In paper industry
C. In glass industry
D. In the preparation of NaOH
10 Potassium superoxide has a use in breathing equipment in space crafts. The balanced equation for the reaction is

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