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

______ reacts with alkalis to give hydrogen

Question # 2

Which of the following is the hardest metal among following

Question # 3

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

Question # 4

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

Question # 5

Which will have the maximum value of heat of hydration

Question # 6

Phosphide ion has the electronic structure similar to that of

Question # 7

Gypsum is a common mineral of

Question # 8

Electron affinity of sulphur is

Question # 9

BiCl3on hydrolysis forms a white precipitate of

Question # 10

The formula of lime stone is

Question # 11

Permonosulphuric acid is known as

Question # 12

Sulphuric acid reacts with PCl5to give

Question # 13

Which of the following is a tetrabasic acid?

Question # 14

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

Question # 15

The acid used in lead storage cells is

Question # 16

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

Question # 17

Which electronic configuration corresponds to an element of Group ||Z-A of the periodic table?

Question # 18

Which property is not present in Al?

Question # 19

Commercial common salt becomes slight damp on storing because

Question # 20

Which one of the following pentafluorides cannot be formed?

Question # 21

In the earth crust sodium is

Question # 22

NaHCO3is commonly called

Question # 23

Orthophosphoric acid is

Question # 24

Which of the following salt is soluble in water

Question # 25

HNO2acts as an/a

Question # 26

Which one of the following does not belong to alkaline earth metals

Question # 27

Hypo is used in photography for

Question # 28

Sodium hexametaphophate is known as

Question # 29

The ore CaSO42H2O has the general name

Question # 30

Which element has highest oxidation potential

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ECAT Chemistry Chapter 14 Important MCQ's

Sr.# Question Answer
1 Alkali metals react violently with halogens to form
A. Hydrides
B. Halides
C. Anyhydrides
D. None of these
2 Group VA of the periodic table consists of the elements N, P, As, Sb and Bi, On passing from N to Bi, the oxides of the elements of general formula M2O3become
A. Stronger reducing agents
B. More ionic
C. More basic
D. More volatile
3 Which of the following phosphorus is most reactive?
A. Red phosphorus
B. White phosphorus
C. Scrlet phosphorus
D. Violet phosphorous
4 Which one of the following does not belong to alkaline earth metals
A. Be
B. Ra
C. Ba
D. Rn
5 Which salt is used for the treatment of hyperacidity in stomach
A. NaCl
B. KCl
C. NaHCO3
D. Na2CO3
6 ______ reacts with alkalis to give hydrogen
A. Be
B. Mg
C. Ca
D. None
7 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
8 What is the formula of asbestos?
A. CaMg3(SiO3)4
B. CaSiO3
C. Na2SiO3
D. Mg3H2(SiO3)4
9 The chemical formula of Trona is
A. KCl . MgCl2. 6H2O
B. Na2CO3. 2NaHCO3. 2H2O
C. Na2CO3. H2O
D. KCl
10 Chile saltpetre has the chemical formula
A. NaNO3
B. KNO3
C. Na2B4O7
D. Na2CO3H2O

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