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

S-block elements consist of

Question # 2

When a colourless gas is passed through bromine water only decolourisation takes place the gas is

Question # 3

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

Question # 4

Boric acid cannot be used:

Question # 5

Al is the most element in earth crust:

Question # 6

Which has soapy touch?

Question # 7

Sodium forms largely

Question # 8

Oleum is

Question # 9

Which of the following sulphates is not soluble in water

Question # 10

P2O5is heated with water to give

Question # 11

Phosphorus pentoxide finds use as

Question # 12

Electron affinity of sulphur is

Question # 13

Heavy water is obtained by

Question # 14

______ reacts with alkalis to give hydrogen

Question # 15

The number of electron that are paired in oxygen molecule are

Question # 16

Which of the following are electropositive in nature

Question # 17

When sulphur is boiled with Na2SO3solution, the compound formed is

Question # 18

Which of the following element is most reactive

Question # 19

Sodium is never found free in nature because of its

Question # 20

Plaster of pares is obtained by heating

Question # 21

Which of the following elements is not present abundantly in earth's crust?

Question # 22

Which of the element is not an alkaline earth metal

Question # 23

Which property is not present in Al?

Question # 24

The alkaline earth elements have in their s-orbital

Question # 25

The chemical formula of Epson salt is

Question # 26

Sulphuric acid has great affinity for water because

Question # 27

Which salt is used for preserving food

Question # 28

Aluminium oxide is:

Question # 29

Marble is chemically

Question # 30

Polyanion formation is maximum in

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ECAT Chemistry Chapter 14 Important MCQ's

Sr.# Question Answer
1 Which of the following salt is used as purgative
A. CaSO4
B. MgSO4
C. BeSO4
D. NaCl
2 Carbonates of alkali metals dissolves freely in water to form
A. Acidic solutions
B. Neutral solution
C. Alkaline solution
D. None of these
3 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
4 Sodium should be stored in
A. Air free from moisture
B. Air free form carbon dioxide
C. Under water
D. Under kerosene oil
5 The chemical formula of Epson salt is
A. MgSO4
B. MgCl2
C. MgSO4. 7H2O
D. MgCl2. 7H2O
6 The number of unpaired electrons in the p-subshell of oxygen atom
A. 1
B. 2
C. 3
D. 4
7 Bond angle is minimum for
A. H2O
B. H2S
C. H2Se
D. H2Te
8 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
9 Which of the following salt is soluble in water
A. CaCO3
B. CaSO4
C. MgSO4
D. BaSO4
10 Which electronic configuration corresponds to an element of Group ||Z-A of the periodic table?
A. 1s, 2s2, 2p6, 3s2, 3p6, 4s2
B. 1s2 , 2s2 , 2p6 , 3s2, 3p1
C. 1s2, 2s2, 2p6
D. 1s2, 2s2, 2p6, 3s2, 3p3

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