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

Copper oxide is dedected by borax bead test with colour:

Question # 2

Heavy water is obtained by

Question # 3

Permonosulphuric acid is known as

Question # 4

Some of the elements of a period show similar behavior with the elements of next group in next period this is called

Question # 5

Which of the following oxides is peroxide?

Question # 6

Which of the following salt is used as purgative

Question # 7

What is the formula of asbestos?

Question # 8

The structure of white phosphorus is

Question # 9

Which element forms an iron with charge 3+?

Question # 10

The number of electron that are paired in oxygen molecule are

Question # 11

Sodium forms largely

Question # 12

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

Question # 13

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

Question # 14

When SO2is passed through acidified K2Cr2O7solution

Question # 15

On alkali and alkaline earth metals down the group, there is decreasing trend in

Question # 16

Which on of the following compounds does not exist?

Question # 17

Which one of the following elements occurs free in nature?

Question # 18

Phosphide ion has the electronic structure similar to that of

Question # 19

White phosphorus is

Question # 20

S-block elements consist of

Question # 21

Marble is chemically

Question # 22

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

Question # 23

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

Question # 24

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

Question # 25

The maximum number of electrons in the outermost shall of s-black elements is

Question # 26

Which will have the maximum value of heat of hydration

Question # 27

The acid which has a peroxy linkage is

Question # 28

______ gives peroxide

Question # 29

Aluminium oxide is:

Question # 30

Down's cell is used to prepare

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ECAT Chemistry Chapter 14 Important MCQ's

Sr.# Question Answer
1 Each of the following is true of white and red phosphours except that they
A. Are both soluble in CS2
B. Can be oxidized by heating in air
C. Consist of the same kind of atoms
D. Can be converted into one another
2 Density of aluminium is (g cm-3):
A. B
B. Al
C. Si
D. Ge
3 What is the formula of asbestos?
A. CaMg3(SiO3)4
B. CaSiO3
C. Na2SiO3
D. Mg3H2(SiO3)4
4 Silicon atom is hybridized:
A. sp
B. sp2
C. sp3
D. dsp2
5 ______ is used in breathing equipments for mountaineers and in space craft
A. Li2O
B. BeO
C. N2
D. KO2
6 Boric acid cannot be used:
A. An antiseptic in medicine
B. For washing eyes
C. In soda bottles
D. For enamels and glazes
7 Sodium should be stored in
A. Air free from moisture
B. Air free form carbon dioxide
C. Under water
D. Under kerosene oil
8 Which carbonate of alkali metals is insoluble in water
A. Na2CO3
B. K2CO3
C. Li2CO3
D. Cs2CO3
9 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
10 Which is litharge or massicot?
A. PbO
B. Pb2O
C. Pb3O4
D. PbO2

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