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

Chief ore of aluminium is:

Question # 2

Phosphide ion has the electronic structure similar to that of

Question # 3

What is chrome yellow?

Question # 4

Which of the following is not the reactions of lithium

Question # 5

Which one of the following pentafluorides cannot be formed?

Question # 6

Plaster of pares is obtained by heating

Question # 7

Heavy water is obtained by

Question # 8

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

Question # 9

Which of the following compounds is explosive in nature?

Question # 10

The structure of white phosphorus is

Question # 11

Alkali metals react violently with halogens to form

Question # 12

When ammonia is heated with cupric oxide, a molecule of ammonia will

Question # 13

Which salt is used for preserving food

Question # 14

Alkaline earth metals are usually

Question # 15

Which of the following phosphorus is most reactive?

Question # 16

Which shows maximum catenation property?

Question # 17

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

Question # 18

The number of electron that are paired in oxygen molecule are

Question # 19

The element caesium bears resemblance with

Question # 20

The chemical formula of chile salt peter is

Question # 21

Which one of the following is not an alkali metal

Question # 22

Corrundam is ore of:

Question # 23

Which on of the following compounds does not exist?

Question # 24

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

Question # 25

Which colour is imparted by sodium

Question # 26

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

Question # 27

Hypo is used in photography for

Question # 28

The ore CaSO42H2O has the general name

Question # 29

Silicon atom is hybridized:

Question # 30

NaHCO3is commonly called

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ECAT Chemistry Chapter 14 Important MCQ's

Sr.# Question Answer
1 ______ reacts with alkalis to give hydrogen
A. Be
B. Mg
C. Ca
D. None
2 Phosphorus pentoxide finds use as
A. An oxidizing agent
B. A reducing agent
C. A bleaching agent
D. A dehydrating agent
3 The chemical formula of Epson salt is
A. MgSO4
B. MgCl2
C. MgSO4. 7H2O
D. MgCl2. 7H2O
4 The chemical formula of gypsum is
A. CaSO4. 5H2O
B. CaSO4. 4H2O
C. CaSO4. 2H2O
D. None of these
5 Plaster of pares is obtained by heating
A. Gypsum
B. Epsom
C. Lime stone
D. Dolomite
6 Which of the following sulphates has the highest solubility in water
A. BaSO4
B. CaSO4
C. MgSO4
D. BeSO4
7 Sodium hexametaphophate is known as
A. Calgon
B. Permutite
C. Natalite
D. Nitrolim
8 The maximum number of electrons in the outermost shall of s-black elements is
A. One
B. Two
C. Three
D. Four
9 The oxyacids of phosphorus in which phosphorus has the lowest oxidiation state is
A. Hypophosphorus acid
B. Orthophosphorus acid
C. Pyrophosphorus acid
D. Metaphosphorus acid
10 Which of the following element is most reactive
A. Li
B. Na
C. K
D. Cs

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