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

Chief ore of aluminium is:

Question # 2

The alkali metals form

Question # 3

What is going to replace the petroleum?

Question # 4

Which element form group 15 gives most basic compound with hydrogen?

Question # 5

Sodium should be stored in

Question # 6

Silicon atom is hybridized:

Question # 7

Which of the following compound is industrially prepared by the electrolysis of solution of NaCl

Question # 8

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

Question # 9

Borax is hydrated:

Question # 10

When sulphur is boiled with Na2SO3solution, the compound formed is

Question # 11

Polyanion formation is maximum in

Question # 12

CaC2on hydrolysis form

Question # 13

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

Question # 14

White phosphorus is

Question # 15

Which is used in navigational equipments?

Question # 16

Sodium hexametaphophate is known as

Question # 17

Which has soapy touch?

Question # 18

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

Question # 19

Which is not the form of silica?

Question # 20

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

Question # 21

Phosphide ion has the electronic structure similar to that of

Question # 22

Baking powder has which one of the following formula

Question # 23

The electrolytic cell used for the production of metallic sodium is known as

Question # 24

The acid which has a peroxy linkage is

Question # 25

The metal with highest electrical resistance at room temperature is

Question # 26

As a fixing agent in photography, sodium thisoulphate is used for

Question # 27

The ore CaSO42H2O has the general name

Question # 28

Which one of the following properties is not correct for ozone?

Question # 29

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

Question # 30

Copper oxide is dedected by borax bead test with colour:

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ECAT Chemistry Chapter 14 Important MCQ's

Sr.# Question Answer
1 Red P can be obtained form white P by
A. Heating it with a catalyst in an inert atmosphere
B. Distilling it in an inert atmosphere
C. Dissolving it in CS2and crysllizing
D. Melting it ad pouring the liquid into water
2 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
3 Which of the following sulphates has the highest solubility in water
A. BaSO4
B. CaSO4
C. MgSO4
D. BeSO4
4 Which of the following sulphates is not soluble in water
A. Sodium sulphate
B. Potassium sulphate
C. Zinc sulphate
D. Barium sulphate
5 NaHCO3is prepared by
A. Down's process
B. Solvay's process
C. Nelson's process
D. None of these
6 Which of the following form normal oxide
A. K
B. Li
C. Na
D. None
7 Calcium carbide reacts with water to produce
A. Acetylene
B. Methane
C. Ethylene
D. Ethane
8 What is the formula of asbestos?
A. CaMg3(SiO3)4
B. CaSiO3
C. Na2SiO3
D. Mg3H2(SiO3)4
9 Basicity of orthoposphoric acid is
A. 2
B. 3
C. 4
D. 5
10 Which element forms an iron with charge 3+?
A. Berylium
B. Aluminium
C. Carbon
D. Silicon

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