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

Which is used to remove air bubbles form metals?

Question # 2

Which carbonate of alkali metals is insoluble in water

Question # 3

Which of the following is not the reactions of lithium

Question # 4

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

Question # 5

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

Question # 6

Which of the following element is most reactive

Question # 7

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

Question # 8

The structure of white phosphorus is

Question # 9

What is chrome yellow?

Question # 10

Hybridized in carbon is:

Question # 11

Down's cell is used to prepare

Question # 12

Phosphine is not obtained by the reaction when

Question # 13

Permonosulphuric acid is known as

Question # 14

Alkali metals react violently with halogens to form

Question # 15

Copper oxide is dedected by borax bead test with colour:

Question # 16

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

Question # 17

Which metal of Group-II A of the periodic Table, will form the least ionic chloride

Question # 18

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

Question # 19

Sodium hexametaphophate is known as

Question # 20

The metal with highest electrical resistance at room temperature is

Question # 21

Carbonates of alkali metals dissolves freely in water to form

Question # 22

Lithium reacts with air to form

Question # 23

Crystalline form of sulphur stable at room temperature is

Question # 24

Electron affinity of sulphur is

Question # 25

When sulphur is boiled with Na2SO3solution, the compound formed is

Question # 26

Which of the following phosphorus is most reactive?

Question # 27

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 # 28

Which has soapy touch?

Question # 29

Which element forms an iron with charge 3+?

Question # 30

Which of the following has highest dipole moment?

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ECAT Chemistry Chapter 14 Important MCQ's

Sr.# Question Answer
1 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
2 Which one of the following elements occurs free in nature?
A. N
B. P
C. As
D. Sb
3 The number of electron that are paired in oxygen molecule are
A. 16
B. 12
C. 14
D. 7
4 When SO2is passed through acidified K2Cr2O7solution
A. The solution turns blue
B. The solution is decolourised
C. SO2is reduced
D. Green Cr2(SO4)3is formed
5 Phosphorus pentoxide finds use as
A. An oxidizing agent
B. A reducing agent
C. A bleaching agent
D. A dehydrating agent
6 Which one of the following properties is not correct for ozone?
A. It oxidizes lead sulphides
B. It oxidizes potassium iodide
C. It oxidizes mercury
D. It cannot act as a bleaching agent
7 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
8 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
9 Oleum is
A. Castor oil
B. Oil of vitriol
C. Fuming of H2SO4
D. None of them
10 Sometimes a yellow turbidity appears while passing H2S gas even in the absence of II group radicals. This is because
A. Sulphur is present in the mixture as impurity
B. IV group radicals are precipitated as sulphides
C. Of the oxidation of H2S gas by some acid radicals
D. III group radicals are precipitated as hydroxides

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