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

Sodium hexametaphophate is known as

Question # 2

______ is used in breathing equipments for mountaineers and in space craft

Question # 3

The oxidation number of each element of group l-A is

Question # 4

Boric acid cannot be used:

Question # 5

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

Question # 6

P2O5is heated with water to give

Question # 7

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

Question # 8

Red P can be obtained form white P by

Question # 9

What causes nitrogen to be chemically inert?

Question # 10

Gypsum is a common mineral of

Question # 11

Which of the following form normal oxide

Question # 12

HNO2acts as an/a

Question # 13

Which carbonate of alkali metals is insoluble in water

Question # 14

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

Question # 15

Hybridized in oxygen is:

Question # 16

Which of the following salt is used as purgative

Question # 17

Lithium reacts with air to form

Question # 18

The alkali metals form

Question # 19

The metal with highest electrical resistance at room temperature is

Question # 20

Polyanion formation is maximum in

Question # 21

Borax is hydrated:

Question # 22

Oleum is

Question # 23

Plaster of pares is obtained by heating

Question # 24

Which of all following compound is not possible

Question # 25

Which element forms an iron with charge 3+?

Question # 26

Which is used to remove air bubbles form metals?

Question # 27

Francium is an element at the bottom of Group I in the Periodic Table. Which one of the following predication is likely to be correct?

Question # 28

NaHCO3is commonly called

Question # 29

Which is not the form of silica?

Question # 30

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

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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 P2O5is heated with water to give
A. Hypophosphorus acid
B. Phosphorus acid
C. Hypophosphorus acid
D. Orthophosphorus acid
3 Which of the following compound is industrially prepared by the electrolysis of solution of NaCl
A. Na2CO3
B. NaHCO3
C. NaOH
D. NaOCl
4 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
5 Potassium superoxide has a use in breathing equipment in space crafts. The balanced equation for the reaction is
6 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
7 Which of the following statement is not related to Solvay's process of Na2CO3
A. Cheap materials
B. Pure product
C. Continuous process
D. Harmful by-products
8 The number of unpaired electrons in the p-subshell of oxygen atom
A. 1
B. 2
C. 3
D. 4
9 When a colourless gas is passed through bromine water only decolourisation takes place the gas is
A. SO2
B. HBR
C. HCl
D. H2S
10 The chemical formula of Epson salt is
A. MgSO4
B. MgCl2
C. MgSO4. 7H2O
D. MgCl2. 7H2O

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