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

Which of the element is not an alkaline earth metal

Question # 2

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

Question # 3

Which one of the following is not an alkali metal

Question # 4

Which of the following is a tetrabasic acid?

Question # 5

Commercial common salt becomes slight damp on storing because

Question # 6

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

Question # 7

______ is called milk of magnesia

Question # 8

Which on of the following compounds does not exist?

Question # 9

Which property is not present in Al?

Question # 10

Gypsum is a common mineral of

Question # 11

Sulphuric acid reacts with PCl5to give

Question # 12

When SO2is passed through acidified K2Cr2O7solution

Question # 13

All the following decompose easily on heating to give oxygen except

Question # 14

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

Question # 15

What is going to replace the petroleum?

Question # 16

In the earth crust sodium is

Question # 17

Chile saltpetre has the chemical formula

Question # 18

Silicon atom is hybridized:

Question # 19

Sometimes a yellow turbidity appears while passing H2S gas even in the absence of II group radicals. This is because

Question # 20

Plaster of pares is obtained by heating

Question # 21

NaHCO3is commonly called

Question # 22

Aluminium oxide is:

Question # 23

Sodium hexametaphophate is known as

Question # 24

Ozone is not

Question # 25

The ore CaSO42H2O has the general name

Question # 26

Orthophosphoric acid is

Question # 27

Which of the following element is most reactive

Question # 28

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

Question # 29

BiCl3on hydrolysis forms a white precipitate of

Question # 30

LiOH ______ soluble than NaOH

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ECAT Chemistry Chapter 14 Important MCQ's

Sr.# Question Answer
1 P2O5is heated with water to give
A. Hypophosphorus acid
B. Phosphorus acid
C. Hypophosphorus acid
D. Orthophosphorus acid
2 Pb has inert pair of electrons:
A. One
B. Two
C. Three
D. Four
3 Heavy water is obtained by
A. Prolonged electrolysis of water
B. Dissolving heavy salt in water
C. Simple distillation of water
D. Removing impurities of calcium and magnesium form water
4 The chemical formula of Epson salt is
A. MgSO4
B. MgCl2
C. MgSO4. 7H2O
D. MgCl2. 7H2O
5 Borax is a common mineral of alkali metal sodium. Its formula is
A. Na2B4O7
B. Na2,B4O7. 10H2O
C. Na2B3O6. 10H2O
D. Na2B4O7- 5H2O
6 What causes nitrogen to be chemically inert?
A. Multiple bond formation in the molecule
B. Absence of bond distance
C. Short internuclear distance
D. High bond energy
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 Sulphuric acid has great affinity for water because
A. It hydrolyses the acid
B. It decomposes the acid
C. Acid forms hydrates with water
D. Acid decomposes water
9 Permonosulphuric acid is known as
A. Marshall's acid
B. Carlo's acid
C. Sulphuric acid
D. None of these
10 Phosphine is not obtained by the reaction when
A. White P is heated with NaOH
B. Red P is heated with NaOH
C. Ca2P2reacts with water
D. PH4l is boiled with water

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